![\"\u5229\u7528\u5c0f\u7a0b\u5e8fapi\u63a5\u53e3\u52a8\u6001\u83b7\u53d6\u5143\u7d20\u5bbd\u9ad8\u63d2\u56fe\"](\"https:\/\/img.php.cn\/upload\/article\/202101\/30\/2021013009283028660.jpg\" "\\"\u5229\u7528\u5c0f\u7a0b\u5e8fapi\u63a5\u53e3\u52a8\u6001\u83b7\u53d6\u5143\u7d20\u5bbd\u9ad8\u63d2\u56fe\\"")
<\/p>\n<\/p>\n
\u901a\u8fc7 wx.createSelectorQuery() api\u63a5\u53e3\u53ef\u4ee5\u8ba9\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u52a8\u6001\u83b7\u53d6view\u5143\u7d20\u7684\u5bbd\u9ad8\u3002<\/p>\n
api\u63a5\u53e3\u7684\u4f7f\u7528\uff1a<\/p>\n
\u9996\u5148\uff0c\u8fd9\u4e2a\u63a5\u53e3\u4f1a\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\u3002<\/p>\n
var obj=wx.createSelectorQuery();<\/p>\n
\u4e0b\u9762\u7684\u5c31\u662f\u8fd4\u56de\u7684\u5bf9\u8c61\u5b9e\u4f8b obj \u7684\u6240\u6709\u5185\u5bb9\u3002<\/p>\n
![\"\u5229\u7528\u5c0f\u7a0b\u5e8fapi\u63a5\u53e3\u52a8\u6001\u83b7\u53d6\u5143\u7d20\u5bbd\u9ad8\u63d2\u56fe1\"](\"https:\/\/img.php.cn\/upload\/image\/659\/497\/677\/1611970281113125.png\" "\\"\u5229\u7528\u5c0f\u7a0b\u5e8fapi\u63a5\u53e3\u52a8\u6001\u83b7\u53d6\u5143\u7d20\u5bbd\u9ad8\u63d2\u56fe1\\"")
<\/p>\n
\u8fd4\u56de\u7684 obj \u6709\u4e94\u4e2a\u65b9\u6cd5\uff1a<\/p>\n
1. obj.in(component)\uff1a\u6ca1\u7528\u8fc7\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u591a\u7528\u4e8e\u7ec4\u4ef6\u7684\u9009\u62e9\u5668\u3002<\/p>\n
2. obj.select(selector)\uff1a\u83b7\u53d6\u6307\u5b9a\u7684\u8282\u70b9\uff0cselector\u662fcss\u9009\u62e9\u5668\u3002\u8fd4\u56de\u4e00\u4e2a NodesRef \u5bf9\u8c61\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u8282\u70b9\u4fe1\u606f\u3002<\/p>\n
3. obj.selectAll(selector)\uff1a\u83b7\u53d6\u6307\u5b9a\u7684\u8282\u70b9\uff0cselector\u662fcss\u9009\u62e9\u5668\u3002\u8fd4\u56de\u4e00\u4e2a NodesRef \u5bf9\u8c61\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u8282\u70b9\u4fe1\u606f\u3002<\/p>\n
\u4e0a\u9762\u8fd9\u4e24\u4e2a\u6211\u611f\u89c9\u5c31\u662f js \u4e2dquerySelector\u548cquerySelectorAll\u7684\u533a\u522b\u3002<\/p>\n
4. obj.selectViewport()\uff1a\u6211\u6ca1\u7528\u8fc7\u8fd9\u4e2a\u65b9\u6cd5\u3002\u5b98\u65b9\u8bf4\u662f\u9009\u62e9\u663e\u793a\u533a\u57df\uff0c\u53ef\u7528\u4e8e\u83b7\u53d6\u663e\u793a\u533a\u57df\u7684\u5c3a\u5bf8\u3001\u6eda\u52a8\u4f4d\u7f6e\u7b49\u4fe1\u606f\u3002\u4e5f\u662f\u8fd4\u56de\u4e00\u4e2a NodesRef \u5bf9\u8c61\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u8282\u70b9\u4fe1\u606f\u3002<\/p>\n
5. exec( function(res){} )\uff1a\u6267\u884c\u6240\u6709\u7684\u8bf7\u6c42\uff0c\u8bf7\u6c42\u7ed3\u679c\u6309\u8bf7\u6c42\u6b21\u5e8f\u6784\u6210\u6570\u7ec4\uff0c\u5728callback\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u4e2d\u8fd4\u56de<\/p>\n
\u4e0a\u9762\u8fd4\u56de\u7684 NodesRef \u5bf9\u8c61\u5b9e\u4f8b\u5c31\u5f88\u91cd\u8981\u4e86\uff0c\u5b83\u6709\u4e09\u4e2a\u65b9\u6cd5\uff1a<\/p>\n
1. boundingClientRect( function(rect){} )\uff1a\u5c31\u662f\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u80fd\u591f\u52a8\u6001\u83b7\u53d6view\u5143\u7d20\u7684\u9ad8\u5ea6\u3001\u5bbd\u5ea6\u7b49\u5c5e\u6027\u3002\u8fd8\u6709\u5176\u5b83\u7684\u8bf7\u770b\u5b98\u65b9\u6587\u6863<\/p>\n
2. scrollOffset( function(res) {}\uff09\uff1a\u83b7\u53d6\u8282\u70b9\u7684\u6c34\u5e73\u3001\u5782\u76f4\u6eda\u52a8\u7684\u4f4d\u7f6e\u7b49\u3002\u8282\u70b9\u5fc5\u987b\u662fscroll-view\u6216\u8005viewport<\/p>\n
3. fields(fields,function(){res} )\uff1a\u8fd9\u4e2a\u53ef\u4ee5\u83b7\u53d6\u6307\u5b9a\u5143\u7d20\u7684\u81ea\u5b9a\u4e49\u5c5e\u6027\u548cclass\u540d\uff0c\u5177\u4f53\u7684\u8bf7\u770b\u5b98\u65b9\u6587\u6863\u7684\u8bf4\u660e\u3002<\/p>\n
\uff08\u5b66\u4e60\u89c6\u9891\u5206\u4eab\uff1a\uff09<\/p>\n
\u5e9f\u8bdd\u4e86\u8fd9\u4e48\u591a\uff0c\u771f\u6b63\u7684\u5b9e\u4f8b\u7528\u6cd5\uff1a <\/p>\n
![\"\u5229\u7528\u5c0f\u7a0b\u5e8fapi\u63a5\u53e3\u52a8\u6001\u83b7\u53d6\u5143\u7d20\u5bbd\u9ad8\u63d2\u56fe2\"](\"https:\/\/img.php.cn\/upload\/image\/803\/646\/982\/1611970305341008.png\" "\\"\u5229\u7528\u5c0f\u7a0b\u5e8fapi\u63a5\u53e3\u52a8\u6001\u83b7\u53d6\u5143\u7d20\u5bbd\u9ad8\u63d2\u56fe2\\"")
<\/p>\n
\u5982\u679c\u89c9\u5f97\u8fd9\u6837\u5199\u6709\u70b9\u957f\u3002\u53ef\u4ee5\u5206\u6b65\u5199\u3002\u4e5f\u662f\u4e00\u6837\u7684\u7ed3\u679c\u3002<\/p>\n
var obj=wx.createSelectorQuery();\nobj.selectAll('.npl-intro').boundingClientRect(function (rect) {\n console.log(rect[0].height)\n console.log(rect[0].width)\n})\nobj.exec() ;<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6216\u8005\u5728exec\u4e2d\u8fd4\u56de\uff0c\u5982\u679c\u51fa\u73b0\u4e0a\u9762\u7684\u65b9\u5f0f\u51fa\u73b0\u83b7\u53d6\u5230\u7684 rect \u662f null \u7684\u8bdd\uff0c\u53ef\u4ee5\u8003\u8651\u7528\u4e0b\u9762\u8fd9\u79cd\uff0c\u5c31\u4e0d\u4f1a\u51fa\u73b0\u95ee\u9898\u3002\u7ed3\u679c\u662f\u4e00\u6837\u7684\u3002<\/p>\n
var obj=wx.createSelectorQuery();\nobj.selectAll('.npl-intro').boundingClientRect();\nobj.exec(function (rect) {\n console.log(rect[0].height)\n console.log(rect[0].width)\n}) ;<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5f53\u7136\uff0c\u8fd9\u65b9\u6cd5\u53ef\u4ee5\u5199\u5728onLoad\u3001onReady\u3001onShow\u7b49\u8fd9\u4e9b\u751f\u547d\u5468\u671f\u7684\u65b9\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u5199\u5728\u81ea\u5b9a\u4e49\u7684\u65b9\u6cd5\u91cc\u3002\u4ec0\u4e48\u65f6\u5019\u9700\u8981\uff0c\u4ec0\u4e48\u65f6\u5019\u5c31\u8c03\u7528\u3002<\/p>\n
\u6ce8\u610f\uff1a\u5982\u679c\u8981\u83b7\u53d6\u901a\u8fc7wx:if \u548csetData\u6765\u5b9e\u73b0\u663e\u793a\u4e0e\u9690\u85cf\u7684\u5143\u7d20\uff0c\u8c03\u7528\u7684\u8fd9\u4e2a\u65b9\u6cd5\u7684\u65f6\u5019\u53ef\u80fd\u51fa\u73b0\u83b7\u53d6\u5230\u7684\u5185\u5bb9\u4e3anull\u3002\u6211\u7684\u89e3\u51b3\u529e\u6cd5\u662f\u52a0\u4e2a\u5b9a\u65f6\u5668\uff1a\u56e0\u4e3a\u8fd9\u4e2a\u83b7\u53d6\u5143\u7d20\u7684\u65b9\u6cd5\u662f\u5f02\u6b65\u7684\uff0c\u6240\u4ee5\u53ea\u6709\u62d6\u5ef6\u70b9\u65f6\u95f4\u518d\u53bb\u83b7\u53d6\uff0c\u4e0d\u7136\u6709\u53ef\u80fd\u5143\u7d20\u8fd8\u672a\u52a0\u8f7d\u51fa\u6765\uff0c\u5c31\u8c03\u7528\u4e86\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u5f53\u7136\u8fd4\u56de\u7684\u7ed3\u679c\u5c31\u662fnull\u4e86\u3002<\/p>\n
\/\/\u52a8\u6001\u8bbe\u7f6e\u9ad8\u5ea6\nsetTimeout(function () {\n var query = wx.createSelectorQuery();\n query.select('.nd-btnBox').boundingClientRect();\n query.exec(function (rect) {\n if (rect[0] === null) return;\n that.setData({\n marginBM: rect[0].height + 10\n })\n });\n}, 500)<\/pre>\n \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u76f8\u5173\u63a8\u8350\uff1a<\/p>\n
\u4ee5\u4e0a\u5c31\u662f\u5229\u7528\u5c0f\u7a0b\u5e8fapi\u63a5\u53e3\u52a8\u6001\u83b7\u53d6\u5143\u7d20\u5bbd\u9ad8\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":"
\u901a\u8fc7 wx.createSelectorQuery() api\u63a5\u53e3\u53ef\u4ee5\u8ba9\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u52a8\u6001\u83b7\u53d6view\u5143\u7d20\u7684\u5bbd\u9ad8\u3002 api\u63a5\u53e3\u7684\u4f7f\u7528\uff1a \u9996\u5148\uff0c\u8fd9\u4e2a\u63a5\u53e3\u4f1a\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u5b9e\u4f8b\u3002 var obj=wx.createSelectorQuery(); \u4e0b\u9762\u7684\u5c31\u662f\u8fd4\u56de\u7684\u5bf9\u8c61\u5b9e\u4f8b obj \u7684\u6240\u6709\u5185\u5bb9\u3002 \u8fd4\u56de\u7684 obj \u6709\u4e94\u4e2a\u65b9\u6cd5\uff1a 1. obj.in(component)\uff1a\u6ca1\u7528\u8fc7\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u591a\u7528\u4e8e\u7ec4\u4ef6\u7684\u9009\u62e9\u5668\u3002 2. obj.select(selector)\uff1a\u83b7\u53d6\u6307\u5b9a\u7684\u8282\u70b9\uff0cselector\u662fcss\u9009\u62e9\u5668\u3002\u8fd4\u56de\u4e00\u4e2a NodesRef \u5bf9\u8c61\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u8282\u70b9\u4fe1\u606f\u3002 3. obj.selectAll(selector)\uff1a\u83b7\u53d6\u6307\u5b9a\u7684\u8282\u70b9\uff0cselector\u662fcss\u9009\u62e9\u5668\u3002\u8fd4\u56de\u4e00\u4e2a NodesRef \u5bf9\u8c61\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u8282\u70b9\u4fe1\u606f\u3002 \u4e0a\u9762\u8fd9\u4e24\u4e2a\u6211\u611f\u89c9\u5c31\u662f js \u4e2dquerySelector\u548cquerySelectorAll\u7684\u533a\u522b\u3002 4. obj.selectViewport()\uff1a\u6211\u6ca1\u7528\u8fc7\u8fd9\u4e2a\u65b9\u6cd5\u3002\u5b98\u65b9\u8bf4\u662f\u9009\u62e9\u663e\u793a\u533a\u57df\uff0c\u53ef\u7528\u4e8e\u83b7\u53d6\u663e\u793a\u533a\u57df\u7684\u5c3a\u5bf8\u3001\u6eda\u52a8\u4f4d\u7f6e\u7b49\u4fe1\u606f\u3002\u4e5f\u662f\u8fd4\u56de\u4e00\u4e2a NodesRef \u5bf9\u8c61\u5b9e\u4f8b\uff0c\u53ef\u4ee5\u7528\u4e8e\u83b7\u53d6\u8282\u70b9\u4fe1\u606f\u3002 5. exec( function(res){} )\uff1a\u6267\u884c\u6240\u6709\u7684\u8bf7\u6c42\uff0c\u8bf7\u6c42\u7ed3\u679c\u6309\u8bf7\u6c42\u6b21\u5e8f\u6784\u6210\u6570\u7ec4\uff0c\u5728callback\u7684\u7b2c\u4e00\u4e2a\u53c2\u6570\u4e2d\u8fd4\u56de \u4e0a\u9762\u8fd4\u56de\u7684 NodesRef \u5bf9\u8c61\u5b9e\u4f8b\u5c31\u5f88\u91cd\u8981\u4e86\uff0c\u5b83\u6709\u4e09\u4e2a\u65b9\u6cd5\uff1a 1. boundingClientRect( function(rect){} )\uff1a\u5c31\u662f\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u80fd\u591f\u52a8\u6001\u83b7\u53d6view\u5143\u7d20\u7684\u9ad8\u5ea6\u3001\u5bbd\u5ea6\u7b49\u5c5e\u6027\u3002\u8fd8\u6709\u5176\u5b83\u7684\u8bf7\u770b\u5b98\u65b9\u6587\u6863 2. scrollOffset( function(res) {}\uff09\uff1a\u83b7\u53d6\u8282\u70b9\u7684\u6c34\u5e73\u3001\u5782\u76f4\u6eda\u52a8\u7684\u4f4d\u7f6e\u7b49\u3002\u8282\u70b9\u5fc5\u987b\u662fscroll-view\u6216\u8005viewport 3. fields(fields,function(){res} )\uff1a\u8fd9\u4e2a\u53ef\u4ee5\u83b7\u53d6\u6307\u5b9a\u5143\u7d20\u7684\u81ea\u5b9a\u4e49\u5c5e\u6027\u548cclass\u540d\uff0c\u5177\u4f53\u7684\u8bf7\u770b\u5b98\u65b9\u6587\u6863\u7684\u8bf4\u660e\u3002 \uff08\u5b66\u4e60\u89c6\u9891\u5206\u4eab\uff1a\uff09 \u5e9f\u8bdd\u4e86\u8fd9\u4e48\u591a\uff0c\u771f\u6b63\u7684\u5b9e\u4f8b\u7528\u6cd5\uff1a \u5982\u679c\u89c9\u5f97\u8fd9\u6837\u5199\u6709\u70b9\u957f\u3002\u53ef\u4ee5\u5206\u6b65\u5199\u3002\u4e5f\u662f\u4e00\u6837\u7684\u7ed3\u679c\u3002 var obj=wx.createSelectorQuery(); obj.selectAll(‘.npl-intro’).boundingClientRect(function (rect) { console.log(rect[0].height) console.log(rect[0].width) }) obj.exec() ; \u767b\u5f55\u540e\u590d\u5236 \u6216\u8005\u5728exec\u4e2d\u8fd4\u56de\uff0c\u5982\u679c\u51fa\u73b0\u4e0a\u9762\u7684\u65b9\u5f0f\u51fa\u73b0\u83b7\u53d6\u5230\u7684 rect \u662f null \u7684\u8bdd\uff0c\u53ef\u4ee5\u8003\u8651\u7528\u4e0b\u9762\u8fd9\u79cd\uff0c\u5c31\u4e0d\u4f1a\u51fa\u73b0\u95ee\u9898\u3002\u7ed3\u679c\u662f\u4e00\u6837\u7684\u3002 var obj=wx.createSelectorQuery(); obj.selectAll(‘.npl-intro’).boundingClientRect(); obj.exec(function (rect) { console.log(rect[0].height) console.log(rect[0].width) }) ; \u767b\u5f55\u540e\u590d\u5236 \u5f53\u7136\uff0c\u8fd9\u65b9\u6cd5\u53ef\u4ee5\u5199\u5728onLoad\u3001onReady\u3001onShow\u7b49\u8fd9\u4e9b\u751f\u547d\u5468\u671f\u7684\u65b9\u6cd5\uff0c\u4e5f\u53ef\u4ee5\u5199\u5728\u81ea\u5b9a\u4e49\u7684\u65b9\u6cd5\u91cc\u3002\u4ec0\u4e48\u65f6\u5019\u9700\u8981\uff0c\u4ec0\u4e48\u65f6\u5019\u5c31\u8c03\u7528\u3002 \u6ce8\u610f\uff1a\u5982\u679c\u8981\u83b7\u53d6\u901a\u8fc7wx:if […]<\/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-33820","post","type-post","status-publish","format-standard","hentry","category-19"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/33820","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=33820"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/33820\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=33820"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=33820"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=33820"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}