{"id":34248,"date":"2024-11-25T13:26:50","date_gmt":"2024-11-25T05:26:50","guid":{"rendered":"https:\/\/fwq.ai\/blog\/34248\/"},"modified":"2024-11-25T13:26:50","modified_gmt":"2024-11-25T05:26:50","slug":"%e8%81%8a%e8%81%8a%e5%b0%8f%e7%a8%8b%e5%ba%8f%e6%80%8e%e4%b9%88%e5%ae%9e%e7%8e%b0%e5%85%a8%e6%96%87%e6%94%b6%e8%b5%b7%e5%8a%9f%e8%83%bd","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/34248\/","title":{"rendered":"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd"},"content":{"rendered":"<p>\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\uff1f\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c0f\u7a0b\u5e8f\u5b9e\u73b0\u591a\u884c\u6587\u672c\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u7684\u65b9\u6cd5\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\uff01<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/000\/000\/024\/6225f031a3521631.jpg\" class=\"aligncenter\" title=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe\" alt=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe\" \/><\/p>\n<p>\u5c0f\u7a0b\u5e8f\u91cc\u7ecf\u5e38\u4f1a\u78b0\u5230\u9700\u8981\u5b9e\u73b0\u591a\u884c\u6587\u672c\u201d\u5168\u6587\u6536\u8d77\u201c\u529f\u80fd\uff0c\u5728\u6398\u91d1\u4e0a\u6709\u641c\u7d22\u5230\u7528<strong>\u7eafcss\u5b9e\u73b0<\/strong>\u3002\u4eb2\u6d4b\uff1a<strong>ios\u5f88\u5b8c\u7f8e\uff0candriod\u4e0a\u7684\u65e0\u6548<\/strong>\u3002<\/p>\n<p>\u5c0f\u7a0b\u5e8f\u793e\u533a\u6709\u5f88\u591a\u65b9\u6848\uff0c\u76ee\u524d\u5728\u793e\u533a\u6709\u770b\u5230\u4e00\u4f4d\u5927\u4f6c\u4f7f\u7528<strong>js\u52a8\u6001\u8ba1\u7b97<\/strong>\u544a\u8bc9\u53bb\u5b9e\u73b0\uff0c\u4eb2\u6d4b\u5927\u81f4\u6709\u6548\u679c\uff0c\u6d4b\u8bd5\u540e\uff0c\u5728\u4e00\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u8ba1\u7b97\u4f1a\u6709\u8bef\u5dee\uff0c\u6240\u4ee5\u6709\u66f4\u6539\u4e9b\u8bb8\u4ee3\u7801\u3002<\/p>\n<h2>\u4e00\u3001\u9700\u6c42<\/h2>\n<ul>\n<li>\u4f4d\u4e8e\u591a\u884c\u6587\u672c\u53f3\u4e0b\u89d2\uff0c\u5c55\u793a\u201d\u5168\u6587\/\u6536\u8d77\u201c\u6309\u94ae<\/li>\n<li>\u201c\u5c55\u5f00\u201d\u548c\u201c\u6536\u8d77\u201d\u4e24\u79cd\u72b6\u6001\u7684\u5207\u6362<\/li>\n<li>\u5f53\u6587\u672c\u4e0d\u8d85\u8fc7\u6307\u5b9a\u884c\u6570\u65f6\uff0c\u4e0d\u663e\u793a\u201d\u5168\u6587\/\u6536\u8d77\u201c\u6309\u94ae<\/li>\n<li>\u6587\u672c\u663e\u793a\u3010\u5168\u6587\u3011\u5c55\u793a\u72b6\u6001\u4e0b\uff0c\u66f4\u65b0\u6570\u636e\uff0c\u6587\u672c\u4e0d\u88ab\u6536\u8d77<\/li>\n<\/ul>\n<h2>\u4e8c\u3001\u5b9e\u73b0\u601d\u8def<\/h2>\n<h3><strong>1\u3001\u591a\u884c\u6587\u672c\u622a\u65ad<\/strong><\/h3>\n<p>\u4e3b\u8981\u7528\u5230\u7528\u5230&nbsp;<strong>line-clamp<\/strong>\uff0c\u5173\u952e\u6837\u5f0f\u5982\u4e0b<\/p>\n<pre>.text-clamp3&nbsp;{\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n&nbsp;&nbsp;display:&nbsp;-webkit-box;\n&nbsp;&nbsp;-webkit-box-orient:&nbsp;vertical;\n&nbsp;&nbsp;-webkit-line-clamp:&nbsp;3;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h3><strong>2\u3001\u5224\u65ad\u6587\u672c\u662f\u5426\u8d85\u51fa\u6307\u5b9a\u884c\u6570\uff0c\u663e\u793a\u5168\u6587 \u6536\u8d77 \u6309\u94ae<\/strong><\/h3>\n<p>\u7f16\u5199\u4e24\u6bb5\u6587\u672c\uff0c\u4e00\u6bb5\u5c55\u793a\u5b8c\u6574\u7684\u6587\u672cA\uff0c\u4e00\u6bb5\u5c55\u793a\u4f7f\u7528&nbsp;<strong>line-clamp<\/strong>\u7701\u7565\u540e\u7684\u6587\u672cB\uff0c\u56e0\u4e3aB\u6709\u88ab\u622a\u53d6\uff0c\u56e0\u6b64B\u7684\u9ad8\u5ea6\u76f8\u5bf9\u8f83\u5c0f\u3002\u5bf9\u6bd4\u4e24\u6bb5\u6587\u672c\u7684\u9ad8\u5ea6\uff0c\u4fbf\u53ef\u4ee5\u77e5\u9053\u6587\u672c\u662f\u5426\u8d85\u51fa\u4e24\u884c<\/p>\n<p>\u5728\u5c0f\u7a0b\u5e8f\u91cc\uff0c\u53ef\u4ee5\u4f7f\u7528wx.createSelectorQuery()\u83b7\u53d6\u6587\u672c\u9ad8\u5ea6<\/p>\n<p>js<\/p>\n<pre>const&nbsp;query&nbsp;=&nbsp;wx.createSelectorQuery().in(this);\nquery.selectAll(\".showArea,&nbsp;.hideArea\").boundingClientRect(res&nbsp;=&amp;gt;&nbsp;{\nconsole.log(res,&nbsp;'res')\n}).exec()<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/696\/435\/769\/1646653285663937.png\" class=\"aligncenter\" title=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe1\" alt=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe1\" \/><\/p>\n<h2>\u4e09\u3001\u4ee3\u7801\u5b9e\u73b0<\/h2>\n<h3><strong>1\u3001\u521d\u6b21\u7248\u672c<\/strong><\/h3>\n<p>\u6839\u636e\u8bbe\u8ba1\u601d\u8def\uff0c\u7acb\u9a6c\u4e0a\u624b\u4ee3\u7801<\/p>\n<p><strong>foldable.wxml<\/strong><\/p>\n<pre>&lt;view&gt;\n&nbsp;&nbsp;&lt;view&gt;{{content}}&lt;\/view&gt;\n&nbsp;&nbsp;&lt;view&gt;{{content}}&lt;\/view&gt;\n&nbsp;&nbsp;&lt;view&gt;\n&nbsp;&nbsp;&nbsp;&nbsp;&lt;text&gt;{{onFold&nbsp;?&nbsp;unFoldText&nbsp;:&nbsp;onFoldText}}&lt;\/text&gt;\n&nbsp;&nbsp;&lt;\/view&gt;&lt;\/view&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>foldable.js<\/strong><\/p>\n<pre>\/**\n&nbsp;*&nbsp;\u957f\u6587\u672c\u5185\u5bb9\u5c55\u5f00\u4e0e\u6536\u8d77\n&nbsp;*&nbsp;@param&nbsp;{String}&nbsp;content&nbsp;&nbsp;\u957f\u6587\u672c\u5185\u5bb9\n&nbsp;*&nbsp;@param&nbsp;{Number}&nbsp;maxLine&nbsp;&nbsp;\u6700\u591a\u5c55\u793a\u884c\u6570[\u53ea\u5141\u8bb8&nbsp;1-5&nbsp;\u7684\u6b63\u6574\u6570]\n&nbsp;*&nbsp;@param&nbsp;{String}&nbsp;position&nbsp;&nbsp;\u5c55\u5f00\u6536\u8d77\u6309\u94ae\u4f4d\u7f6e[\u53ef\u9009\u503c\u4e3a&nbsp;left&nbsp;right]\n&nbsp;*&nbsp;@param&nbsp;{Boolean}&nbsp;foldable&nbsp;&nbsp;\u70b9\u51fb\u957f\u6587\u672c\u662f\u5426\u5c55\u5f00\u6536\u8d77\n&nbsp;*&nbsp;@param&nbsp;{&nbsp;String&nbsp;}&nbsp;onFoldText&nbsp;\u6536\u7f29\u65f6\u6587\u5b57\n&nbsp;*&nbsp;@param&nbsp;{&nbsp;String&nbsp;}&nbsp;unFoldText&nbsp;\u5c55\u5f00\u65f6\u6587\u5b57\n&nbsp;*&nbsp;\n&nbsp;*\/\n\nComponent({\n&nbsp;&nbsp;externalClasses:&nbsp;['content-inner-class',&nbsp;'fold-class'],\n&nbsp;&nbsp;properties:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;content:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;type:&nbsp;String,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;observer(val)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(this.data.onReady)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.getNodeClientReact()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;},\n&nbsp;&nbsp;&nbsp;&nbsp;maxLine:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;type:&nbsp;Number,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value:&nbsp;1,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;observer(value)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(!(\/^[1-5]$\/).test(value))&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;throw&nbsp;new&nbsp;Error(`maxLine&nbsp;field&nbsp;value&nbsp;can&nbsp;only&nbsp;be&nbsp;digits&nbsp;(1-5),&nbsp;Error&nbsp;value:&nbsp;${value}`)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;else&nbsp;if&nbsp;(this.data.onReady)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.getNodeClientReact()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;},\n&nbsp;&nbsp;&nbsp;&nbsp;position:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;type:&nbsp;String,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value:&nbsp;\"left\"\n&nbsp;&nbsp;&nbsp;&nbsp;},\n&nbsp;&nbsp;&nbsp;&nbsp;foldable:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;type:&nbsp;Boolean,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value:&nbsp;true\n&nbsp;&nbsp;&nbsp;&nbsp;},\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/&nbsp;\u6536\u7f29\u65f6\u6587\u5b57\n&nbsp;&nbsp;&nbsp;&nbsp;onFoldText:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;type:&nbsp;String,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value:&nbsp;\"\u5168\u6587\"\n&nbsp;&nbsp;&nbsp;&nbsp;},\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/&nbsp;\u5c55\u5f00\u65f6\u6587\u5b57\n&nbsp;&nbsp;&nbsp;&nbsp;unFoldText:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;type:&nbsp;String,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value:&nbsp;\"\u6536\u8d77\"\n&nbsp;&nbsp;&nbsp;&nbsp;},\n&nbsp;&nbsp;},\n&nbsp;&nbsp;data:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;width:&nbsp;null,\n&nbsp;&nbsp;&nbsp;&nbsp;onFold:&nbsp;false,\n&nbsp;&nbsp;&nbsp;&nbsp;showFold:&nbsp;false,\n&nbsp;&nbsp;&nbsp;&nbsp;onReady:&nbsp;false\n&nbsp;&nbsp;},\n&nbsp;&nbsp;lifetimes:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;attached()&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.getNodeClientReact()\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;this.setData({\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;onReady:&nbsp;true\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;})\n&nbsp;&nbsp;&nbsp;&nbsp;},\n&nbsp;&nbsp;},\n&nbsp;&nbsp;methods:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;getNodeClientReact()&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;setTimeout(()&nbsp;=&amp;gt;&nbsp;this.checkFold(),&nbsp;10)\n&nbsp;&nbsp;&nbsp;&nbsp;},\n&nbsp;&nbsp;&nbsp;&nbsp;checkFold()&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;const&nbsp;query&nbsp;=&nbsp;this.createSelectorQuery();\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;query.selectAll(\".showArea,&nbsp;.hideArea\").boundingClientRect(res&nbsp;=&amp;gt;&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;let&nbsp;showFold&nbsp;=&nbsp;res[0].height&nbsp;&lt;p&gt;&lt;strong&gt;foldable.wxss&lt;\/strong&gt;&lt;\/p&gt;&lt;pre class=\"brush:js;toolbar:false;\"&gt;.content&nbsp;{\n&nbsp;&nbsp;width:&nbsp;100%;\n&nbsp;&nbsp;position:&nbsp;relative;\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n}\n\n.contentInner&nbsp;{\n&nbsp;&nbsp;word-break:&nbsp;break-all;\n&nbsp;&nbsp;width:&nbsp;100%;\n&nbsp;&nbsp;color:&nbsp;#2f3033;\n&nbsp;&nbsp;font-size:&nbsp;30rpx;\n&nbsp;&nbsp;line-height:&nbsp;1.35;\n}\n\n.hideArea&nbsp;{\n&nbsp;&nbsp;display:&nbsp;-webkit-box;\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n&nbsp;&nbsp;position:&nbsp;fixed;\n&nbsp;&nbsp;top:&nbsp;100vh;\n&nbsp;&nbsp;left:&nbsp;-100vw;\n}\n\n.foldInner&nbsp;{\n&nbsp;&nbsp;padding-top:&nbsp;10rpx;\n&nbsp;&nbsp;color:&nbsp;#6676bd;\n&nbsp;&nbsp;font-size:&nbsp;32rpx;\n}\n\n.foldInner&nbsp;.fold&nbsp;{\n&nbsp;&nbsp;cursor:&nbsp;pointer;\n}\n\n.text-clamp1&nbsp;{\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n&nbsp;&nbsp;display:&nbsp;-webkit-box;\n&nbsp;&nbsp;-webkit-box-orient:&nbsp;vertical;\n&nbsp;&nbsp;-webkit-line-clamp:&nbsp;1;\n}\n\n.text-clamp2&nbsp;{\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n&nbsp;&nbsp;display:&nbsp;-webkit-box;\n&nbsp;&nbsp;-webkit-box-orient:&nbsp;vertical;\n&nbsp;&nbsp;-webkit-line-clamp:&nbsp;2;\n}\n\n.text-clamp3&nbsp;{\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n&nbsp;&nbsp;display:&nbsp;-webkit-box;\n&nbsp;&nbsp;-webkit-box-orient:&nbsp;vertical;\n&nbsp;&nbsp;-webkit-line-clamp:&nbsp;3;\n}\n\n.text-clamp4&nbsp;{\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n&nbsp;&nbsp;display:&nbsp;-webkit-box;\n&nbsp;&nbsp;-webkit-box-orient:&nbsp;vertical;\n&nbsp;&nbsp;-webkit-line-clamp:&nbsp;4;\n}\n\n.text-clamp5&nbsp;{\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n&nbsp;&nbsp;display:&nbsp;-webkit-box;\n&nbsp;&nbsp;-webkit-box-orient:&nbsp;vertical;\n&nbsp;&nbsp;-webkit-line-clamp:&nbsp;5;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h3><strong>2\u3001\u4fee\u590d\u7248\u672c<\/strong><\/h3>\n<p>\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u6b64\u65b9\u6cd5\u53ef\u884c\uff0c\u4f46\u662f\u5728\u7ea7\u522b\u6587\u5b57\u4e0b\uff0c\u4f1a\u8ba1\u7b97\u9519\u8bef\u3002\u7ecf\u8fc7\u6d4b\u8bd5\uff0c\u53ef\u5c06 \u8282\u70b9\u662f.hideArea\u7684\u5185\u5bb9\u5b9a\u4f4d\u5728.showArea\u8282\u70b9\u4e0b\u53ef\u89e3\u51b3<\/p>\n<p><strong>foldable.wxss<\/strong><\/p>\n<pre>.hideArea&nbsp;{\n&nbsp;&nbsp;display:&nbsp;-webkit-box;\n&nbsp;&nbsp;overflow:&nbsp;hidden;\n&nbsp;&nbsp;\/*&nbsp;position:&nbsp;fixed;\n&nbsp;&nbsp;top:&nbsp;100vh;\n&nbsp;&nbsp;left:&nbsp;-100vw;&nbsp;*\/\n&nbsp;&nbsp;position:&nbsp;absolute;\n&nbsp;&nbsp;top:&nbsp;0;\n&nbsp;&nbsp;left:&nbsp;0;\n&nbsp;&nbsp;z-index:&nbsp;-1;\n&nbsp;&nbsp;color:&nbsp;#fff;\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h3><strong>3\u3001\u589e\u5f3a\u7248\u672c<\/strong><\/h3>\n<p>\u7ecf\u8fc7\u4fee\u590d\u4e4b\u540e\uff0c\u672c\u6765\u662f\u53ef\u4ee5\u5b8c\u7f8e\u5b9e\u73b0\u4e86\uff0c\u4f46\u662f\u5728\u6d4b\u8bd5\u8fc7\u7a0b\u4e2d\uff0c\u7b2c\u4e00\u6b21\u6b63\u5e38\u6e32\u67d3\u662f\u6ca1\u6709\u95ee\u9898\u3002\u4f46\u5982\u679c\u6587\u672c\u6570\u636e\u66f4\u65b0\uff0c\u4f1a\u53d1\u73b0\u5982\u679c\u539f\u6765\u7684\u6587\u672c\u4ece\u4e00\u884c\u589e\u52a0\u5230\u4e24\u884c\u65f6\uff0c\u4f7f\u7528wx.createSelectorQuery()\u8ba1\u7b97\u7684\u9ad8\u5ea6\u4f1a\u6709\u5b58\u5728\u662f\u5b9e\u9645\u9ad8\u4f4e\u7684\u4e24\u500d\u7684\u73b0\u8c61\u3002\u5bfc\u81f4\u4f1a\u9519\u8bef\u51fa\u73b0\u3010\u5168\u6587\u3011\u6587\u5b57\u3002\u7136\u540e\u6587\u672c\u4ece\u4e24\u884c\u589e\u52a0\u5230\u4e09\u884c\u6216\u8005\u591a\u884c\u90fd\u6ca1\u95ee\u9898\uff0c\u4e0d\u592a\u7406\u89e3\u4e3a\u4ec0\u4e48\u4f1a\u51fa\u73b0\u8fd9\u4e2a\u9519\u8bef\u8ba1\u7b97\u7684\u73b0\u8c61\u3002\uff08\u671f\u5f85\u5927\u795e\u80fd\u7559\u8a00\u544a\u77e5 ? \uff09<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/174\/945\/922\/1646653293273716.png\" class=\"aligncenter\" title=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe2\" alt=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe2\" \/><\/p>\n<p>\u4e3a\u4e86\u5f25\u8865\u8fd9\u4e2a\u5751\uff0c\u6211\u5f15\u5165\u4e86lineHieght\u8fd9\u4e2a\u5c5e\u6027\u3002<\/p>\n<pre>\/\/&nbsp;foldable.js\nComponent({\n&nbsp;&nbsp;&nbsp;&nbsp;properties:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;lineHieght:&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;type:&nbsp;Number,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;observer(value)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(!(\/^[0-9]*$\/).test(value))&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;throw&nbsp;new&nbsp;Error(`lineHieght&nbsp;field&nbsp;value&nbsp;can&nbsp;only&nbsp;be&nbsp;digits`)\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;}\n})<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u901a\u8fc7lineHieght\u548c\u6700\u591a\u53ef\u5c55\u793a\u884c\u6570maxLine\u53ef\u4ee5\u8ba1\u7b97\u51fa\uff0c\u53ef\u5728\u754c\u9762\u5c55\u793a\u7684\u6700\u5927\u9ad8\u5ea6\u3002<\/p>\n<pre>\/\/&nbsp;\u6587\u672c\u53ef\u89c1\u7684\u6700\u5927\u9ad8\u5ea6\nconst&nbsp;maxHeight&nbsp;=&nbsp;this.data.lineHieght&nbsp;*&nbsp;this.data.maxLine;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5f53\u7136\u4e86\uff0c\u6211\u4eec\u4e5f\u9700\u8981\u9002\u914d\u4e0d\u540c\u7684\u8bbe\u5907\uff0c\u800c\u4e14\u901a\u8fc7wx.createSelectorQuery()\u8ba1\u7b97\u51fa\u6765\u7684\u7ed3\u679c\u662f\u4ee5px\u4e3a\u5355\u4f4d\u7684\u3002<\/p>\n<p>\u6240\u4ee5\uff0c\u884c\u9ad8\u9700\u8981\u6839\u636e\u8bbe\u5907\u5c3a\u5bf8\u53bb\u6539\u53d8\u3002\u56e0\u4e3a\u6211\u4eec\u662f\u4ee5\u5bbd\u5ea6\u662f750px\u5c3a\u5bf8\u4e3a\u8bbe\u8ba1\u7a3f\u7684\uff0c\u6240\u4ee5\u6839\u636ewx.getSystemInfoSync()\u53ef\u4ee5\u83b7\u53d6\u8bbe\u5907\u4fe1\u606f\uff0c\u8fdb\u800c\u8f6c\u6362\u6210px\u7684\u5c3a\u5bf8\u3002<\/p>\n<pre>\/\/&nbsp;foldable.js\nchangeRpxToPx(rpxInteger)&nbsp;{\n&nbsp;&nbsp;return&nbsp;wx.getSystemInfoSync().windowWidth&nbsp;\/&nbsp;750&nbsp;*&nbsp;rpxInteger\n},<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u56e0\u6b64\uff0c\u66f4\u65b0checkFold\u65b9\u6cd5<\/p>\n<pre>checkFold()&nbsp;{\n&nbsp;&nbsp;const&nbsp;query&nbsp;=&nbsp;this.createSelectorQuery();\n&nbsp;&nbsp;query.selectAll(\".showArea,&nbsp;.hideArea\").boundingClientRect(res&nbsp;=&amp;gt;&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;let&nbsp;showFold&nbsp;=&nbsp;res[0].height&nbsp;&nbsp;maxHeight\n&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;this.setData({\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;width:&nbsp;res[0].width,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;showFold,\n&nbsp;&nbsp;&nbsp;&nbsp;})\n&nbsp;&nbsp;}).exec()\n},<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h3><strong>4\u3001\u6700\u7ec8\u7248\u672c<\/strong><\/h3>\n<p>\u7ecf\u8fc7\u4e0a\u4e00\u4e2a\u7248\u672c\uff0c\u57fa\u672c\u529f\u80fd\u90fd\u5df2\u7ecf\u5b9e\u73b0\u3002\u4f46\u662f\uff0c\u5982\u679c\u6587\u672c\u8d85\u8fc7\u6700\u5927\u884c\u6570\uff0c\u5e76\u4e14\u5728\u5c55\u5f00\u5168\u6587\u7684\u60c5\u51b5\u4e0b\uff0c\u66f4\u65b0\u4e86\u6587\u672c\uff0c\u6b64\u65f6\uff0c\u5168\u6587\/\u5c55\u5f00\u6309\u94ae\u4f1a\u5c55\u793a\u9519\u8bef\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/782\/708\/283\/1646653298326112.png\" class=\"aligncenter\" title=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe3\" alt=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe3\" \/><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/image\/947\/335\/467\/1646653301359435.png\" class=\"aligncenter\" title=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe4\" alt=\"\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u63d2\u56fe4\" \/><\/p>\n<p>\u901a\u8fc7\u5206\u6790\u4ee3\u7801\u53ef\u77e5\uff0c\u5728\u5c55\u5f00\u5168\u6587\u7684\u72b6\u6001\u4e0b\u66f4\u65b0\u4e86\u6587\u672c\uff0c\u6b64\u65f6.showArea\u8282\u70b9\u548c.hideArea\u8282\u70b9\u7684\u9ad8\u5ea6\u4e00\u81f4\uff0c\u6267\u884c\u4ee3\u7801let showFold = res[0].height <\/p>\n<p>\u56e0\u6b64\u89e3\u51b3\u65b9\u6848\u4e3a\uff1a<\/p>\n<pre>\/\/&nbsp;\u5982\u679c\u6587\u672c\u8d85\u51fa\u6700\u5927\u884c\u6570\uff0c\u5e76\u4e14\u662f\u663e\u793a\u5168\u6587\u7684\u72b6\u6001\u4e0b\uff0c\u518d\u6b21\u66f4\u65b0\u4e86\u6587\u5b57\nlet&nbsp;onFold&nbsp;=&nbsp;false\nif&nbsp;(showAreaHeight&nbsp;==&nbsp;hideAreaHeight&nbsp;&amp;amp;&amp;amp;&nbsp;showAreaHeight&nbsp;&amp;gt;&nbsp;maxHeight)&nbsp;{\n&nbsp;&nbsp;showFold&nbsp;=&nbsp;true\n&nbsp;&nbsp;onFold&nbsp;=&nbsp;true\n}<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u6240\u4ee5\u6700\u7ec8\u7248\u672c\u7684checkFold\u65b9\u6cd5\u662f\uff1a<\/p>\n<pre>checkFold()&nbsp;{\n&nbsp;&nbsp;const&nbsp;query&nbsp;=&nbsp;this.createSelectorQuery();\n&nbsp;&nbsp;query.selectAll(\".showArea,&nbsp;.hideArea\").boundingClientRect(res&nbsp;=&amp;gt;&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;let&nbsp;showFold&nbsp;=&nbsp;res[0].height&nbsp;&nbsp;maxHeight\n&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;\/\/&nbsp;\u5982\u679c\u6587\u672c\u8d85\u51fa\u6700\u5927\u884c\u6570\uff0c\u5e76\u4e14\u662f\u663e\u793a\u5168\u6587\u7684\u72b6\u6001\u4e0b\uff0c\u518d\u6b21\u66f4\u65b0\u4e86\u6587\u5b57\n&nbsp;&nbsp;&nbsp;&nbsp;let&nbsp;onFold&nbsp;=&nbsp;false\n&nbsp;&nbsp;&nbsp;&nbsp;if&nbsp;(showAreaHeight&nbsp;==&nbsp;hideAreaHeight&nbsp;&amp;amp;&amp;amp;&nbsp;showAreaHeight&nbsp;&amp;gt;&nbsp;maxHeight)&nbsp;{\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;showFold&nbsp;=&nbsp;true\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;onFold&nbsp;=&nbsp;true\n&nbsp;&nbsp;&nbsp;&nbsp;}\n&nbsp;&nbsp;&nbsp;&nbsp;this.setData({\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;width:&nbsp;res[0].width,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;showFold,\n&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;onFold,\n&nbsp;&nbsp;&nbsp;&nbsp;})\n&nbsp;&nbsp;}).exec()\n},<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<h2>\u56db\u3001\u4ee3\u7801\u7247\u6bb5<\/h2>\n<blockquote><p>\n  \u7ecf\u8fc7\u591a\u6b21\u6d4b\u8bd5\uff0c\u4fee\u6539\uff0c\u6700\u540e\u9644\u4e0a\u4ee3\u7801\u7247\u6bb5\uff1ahttps:\/\/developers.weixin.qq.com\/s\/GWj19vmC7oxp\u5404\u4f4d\u5927\u795e\u5982\u679c\u6709\u66f4\u597d\u7684\u5efa\u8bae\uff0c\u53ef\u7559\u8a00\u54e6~~~\n<\/p><\/blockquote>\n<p>\u3010\u76f8\u5173\u5b66\u4e60\u63a8\u8350\uff1a\u3011<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u804a\u804a\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5c0f\u7a0b\u5e8f\u600e\u4e48\u5b9e\u73b0\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\uff1f\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c0f\u7a0b\u5e8f\u5b9e\u73b0\u591a\u884c\u6587\u672c\u201c\u5168\u6587\u6536\u8d77\u201d\u529f\u80fd\u7684\u65b9\u6cd5\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u6709\u6240\u5e2e\u52a9\uff01 \u5c0f\u7a0b\u5e8f\u91cc\u7ecf\u5e38\u4f1a\u78b0\u5230\u9700\u8981\u5b9e\u73b0\u591a\u884c\u6587\u672c\u201d\u5168\u6587\u6536\u8d77\u201c\u529f\u80fd\uff0c\u5728\u6398\u91d1\u4e0a\u6709\u641c\u7d22\u5230\u7528\u7eafcss\u5b9e\u73b0\u3002\u4eb2\u6d4b\uff1aios\u5f88\u5b8c\u7f8e\uff0candriod\u4e0a\u7684\u65e0\u6548\u3002 \u5c0f\u7a0b\u5e8f\u793e\u533a\u6709\u5f88\u591a\u65b9\u6848\uff0c\u76ee\u524d\u5728\u793e\u533a\u6709\u770b\u5230\u4e00\u4f4d\u5927\u4f6c\u4f7f\u7528js\u52a8\u6001\u8ba1\u7b97\u544a\u8bc9\u53bb\u5b9e\u73b0\uff0c\u4eb2\u6d4b\u5927\u81f4\u6709\u6548\u679c\uff0c\u6d4b\u8bd5\u540e\uff0c\u5728\u4e00\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u8ba1\u7b97\u4f1a\u6709\u8bef\u5dee\uff0c\u6240\u4ee5\u6709\u66f4\u6539\u4e9b\u8bb8\u4ee3\u7801\u3002 \u4e00\u3001\u9700\u6c42 \u4f4d\u4e8e\u591a\u884c\u6587\u672c\u53f3\u4e0b\u89d2\uff0c\u5c55\u793a\u201d\u5168\u6587\/\u6536\u8d77\u201c\u6309\u94ae \u201c\u5c55\u5f00\u201d\u548c\u201c\u6536\u8d77\u201d\u4e24\u79cd\u72b6\u6001\u7684\u5207\u6362 \u5f53\u6587\u672c\u4e0d\u8d85\u8fc7\u6307\u5b9a\u884c\u6570\u65f6\uff0c\u4e0d\u663e\u793a\u201d\u5168\u6587\/\u6536\u8d77\u201c\u6309\u94ae \u6587\u672c\u663e\u793a\u3010\u5168\u6587\u3011\u5c55\u793a\u72b6\u6001\u4e0b\uff0c\u66f4\u65b0\u6570\u636e\uff0c\u6587\u672c\u4e0d\u88ab\u6536\u8d77 \u4e8c\u3001\u5b9e\u73b0\u601d\u8def 1\u3001\u591a\u884c\u6587\u672c\u622a\u65ad \u4e3b\u8981\u7528\u5230\u7528\u5230&nbsp;line-clamp\uff0c\u5173\u952e\u6837\u5f0f\u5982\u4e0b .text-clamp3&nbsp;{ &nbsp;&nbsp;overflow:&nbsp;hidden; &nbsp;&nbsp;display:&nbsp;-webkit-box; &nbsp;&nbsp;-webkit-box-orient:&nbsp;vertical; &nbsp;&nbsp;-webkit-line-clamp:&nbsp;3; } \u767b\u5f55\u540e\u590d\u5236 2\u3001\u5224\u65ad\u6587\u672c\u662f\u5426\u8d85\u51fa\u6307\u5b9a\u884c\u6570\uff0c\u663e\u793a\u5168\u6587 \u6536\u8d77 \u6309\u94ae \u7f16\u5199\u4e24\u6bb5\u6587\u672c\uff0c\u4e00\u6bb5\u5c55\u793a\u5b8c\u6574\u7684\u6587\u672cA\uff0c\u4e00\u6bb5\u5c55\u793a\u4f7f\u7528&nbsp;line-clamp\u7701\u7565\u540e\u7684\u6587\u672cB\uff0c\u56e0\u4e3aB\u6709\u88ab\u622a\u53d6\uff0c\u56e0\u6b64B\u7684\u9ad8\u5ea6\u76f8\u5bf9\u8f83\u5c0f\u3002\u5bf9\u6bd4\u4e24\u6bb5\u6587\u672c\u7684\u9ad8\u5ea6\uff0c\u4fbf\u53ef\u4ee5\u77e5\u9053\u6587\u672c\u662f\u5426\u8d85\u51fa\u4e24\u884c \u5728\u5c0f\u7a0b\u5e8f\u91cc\uff0c\u53ef\u4ee5\u4f7f\u7528wx.createSelectorQuery()\u83b7\u53d6\u6587\u672c\u9ad8\u5ea6 js const&nbsp;query&nbsp;=&nbsp;wx.createSelectorQuery().in(this); query.selectAll(&#8220;.showArea,&nbsp;.hideArea&#8221;).boundingClientRect(res&nbsp;=&amp;gt;&nbsp;{ console.log(res,&nbsp;&#8216;res&#8217;) }).exec() \u767b\u5f55\u540e\u590d\u5236 \u4e09\u3001\u4ee3\u7801\u5b9e\u73b0 1\u3001\u521d\u6b21\u7248\u672c \u6839\u636e\u8bbe\u8ba1\u601d\u8def\uff0c\u7acb\u9a6c\u4e0a\u624b\u4ee3\u7801 foldable.wxml &lt;view&gt; &nbsp;&nbsp;&lt;view&gt;{{content}}&lt;\/view&gt; &nbsp;&nbsp;&lt;view&gt;{{content}}&lt;\/view&gt; &nbsp;&nbsp;&lt;view&gt; &nbsp;&nbsp;&nbsp;&nbsp;&lt;text&gt;{{onFold&nbsp;?&nbsp;unFoldText&nbsp;:&nbsp;onFoldText}}&lt;\/text&gt; &nbsp;&nbsp;&lt;\/view&gt;&lt;\/view&gt; \u767b\u5f55\u540e\u590d\u5236 foldable.js \/** &nbsp;*&nbsp;\u957f\u6587\u672c\u5185\u5bb9\u5c55\u5f00\u4e0e\u6536\u8d77 &nbsp;*&nbsp;@param&nbsp;{String}&nbsp;content&nbsp;&nbsp;\u957f\u6587\u672c\u5185\u5bb9 &nbsp;*&nbsp;@param&nbsp;{Number}&nbsp;maxLine&nbsp;&nbsp;\u6700\u591a\u5c55\u793a\u884c\u6570[\u53ea\u5141\u8bb8&nbsp;1-5&nbsp;\u7684\u6b63\u6574\u6570] &nbsp;*&nbsp;@param&nbsp;{String}&nbsp;position&nbsp;&nbsp;\u5c55\u5f00\u6536\u8d77\u6309\u94ae\u4f4d\u7f6e[\u53ef\u9009\u503c\u4e3a&nbsp;left&nbsp;right] &nbsp;*&nbsp;@param&nbsp;{Boolean}&nbsp;foldable&nbsp;&nbsp;\u70b9\u51fb\u957f\u6587\u672c\u662f\u5426\u5c55\u5f00\u6536\u8d77 &nbsp;*&nbsp;@param&nbsp;{&nbsp;String&nbsp;}&nbsp;onFoldText&nbsp;\u6536\u7f29\u65f6\u6587\u5b57 &nbsp;*&nbsp;@param&nbsp;{&nbsp;String&nbsp;}&nbsp;unFoldText&nbsp;\u5c55\u5f00\u65f6\u6587\u5b57 &nbsp;*&nbsp; &nbsp;*\/ Component({ &nbsp;&nbsp;externalClasses:&nbsp;[&#8216;content-inner-class&#8217;,&nbsp;&#8216;fold-class&#8217;], &nbsp;&nbsp;properties:&nbsp;{ &nbsp;&nbsp;&nbsp;&nbsp;content:&nbsp;{ [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"class_list":["post-34248","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34248","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=34248"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/34248\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=34248"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=34248"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=34248"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}