{"id":52703,"date":"2024-12-03T17:44:24","date_gmt":"2024-12-03T09:44:24","guid":{"rendered":"https:\/\/fwq.ai\/blog\/52703\/"},"modified":"2024-12-03T17:44:24","modified_gmt":"2024-12-03T09:44:24","slug":"%e8%bd%ae%e6%92%ad%e5%9b%be%e7%82%b9%e5%87%bb%e6%8c%89%e9%92%ae%e6%97%a0%e6%95%88%ef%bc%9a%e4%b8%ba%e4%bb%80%e4%b9%88%e6%88%91%e7%9a%84onclick%e4%ba%8b%e4%bb%b6%e4%b8%ad%e7%9a%84this%e6%8c%87","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/52703\/","title":{"rendered":"\u8f6e\u64ad\u56fe\u70b9\u51fb\u6309\u94ae\u65e0\u6548\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684`onclick`\u4e8b\u4ef6\u4e2d\u7684`this`\u6307\u5411\u4e86`window`\u800c\u4e0d\u662f\u6309\u94ae\uff1f"},"content":{"rendered":"<p><b><\/b>     <\/p>\n<h1>\u8f6e\u64ad\u56fe\u70b9\u51fb\u6309\u94ae\u65e0\u6548\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684`onclick`\u4e8b\u4ef6\u4e2d\u7684`this`\u6307\u5411\u4e86`window`\u800c\u4e0d\u662f\u6309\u94ae\uff1f 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title=\"\u8f6e\u64ad\u56fe\u70b9\u51fb\u6309\u94ae\u65e0\u6548\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684`onclick`\u4e8b\u4ef6\u4e2d\u7684`this`\u6307\u5411\u4e86`window`\u800c\u4e0d\u662f\u6309\u94ae\uff1f\u63d2\u56fe\" alt=\"\u8f6e\u64ad\u56fe\u70b9\u51fb\u6309\u94ae\u65e0\u6548\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684`onclick`\u4e8b\u4ef6\u4e2d\u7684`this`\u6307\u5411\u4e86`window`\u800c\u4e0d\u662f\u6309\u94ae\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u8f6e\u64ad\u56fe\u70b9\u51fb\u6309\u94ae\u4e0d\u80fd\u5207\u6362\u56fe\u7247\uff0c\u7ed1\u5b9a\u7684 onclick \u4e8b\u4ef6\u4e2d this \u5374\u6307\u5411\u4e86 window\uff1f<\/strong><\/p>\n<p><strong>\u95ee\u9898\u63cf\u8ff0\uff1a<\/strong><\/p>\n<p>\u8f6e\u64ad\u56fe\u4e2d\uff0c\u5c0f\u5706\u70b9\u6309\u94ae\u70b9\u51fb\u540e\u4e0d\u80fd\u5207\u6362\u5bf9\u5e94\u7684\u56fe\u7247\uff0c\u5e76\u4e14\u7ed1\u5b9a\u7684 onclick \u4e8b\u4ef6\u4e2d\u7684 this \u603b\u662f\u6307\u5411 window \u800c\u4e0d\u662f\u5f53\u524d\u6309\u94ae\u3002<\/p>\n<p><strong>\u5206\u6790\uff1a<\/strong><\/p>\n<p>\u6839\u636e\u63d0\u4f9b\u7684\u4ee3\u7801\uff0c\u6211\u4eec\u53ef\u4ee5\u53d1\u73b0\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n<ul>\n<li>\u5c0f\u5706\u70b9\u6309\u94ae\u7684 onclick \u4e8b\u4ef6\u7ed1\u5b9a\u5982\u4e0b\uff1a<\/li>\n<\/ul>\n<pre>points[i].onclick = function () {\n  index = this.index\n  chageall();\n};<\/pre>\n<ul>\n<li>\u5f53\u5c0f\u5706\u70b9\u6309\u94ae\u88ab\u70b9\u51fb\u65f6\uff0cthis \u6307\u5411\u4e86 window\uff0c\u5bfc\u81f4\u65e0\u6cd5\u8bbf\u95ee\u5f53\u524d\u6309\u94ae\u7684 index \u5c5e\u6027\u3002<\/li>\n<\/ul>\n<p><strong>\u539f\u56e0\uff1a<\/strong><\/p>\n<p>\u8be5\u95ee\u9898\u53ef\u80fd\u662f\u7531\u7bad\u5934\u51fd\u6570\u5f15\u8d77\u7684\u3002\u7bad\u5934\u51fd\u6570\u7684 this \u4e0d\u662f\u6307\u5411\u51fd\u6570\u88ab\u8c03\u7528\u7684\u5bf9\u8c61\uff0c\u800c\u662f\u6307\u5411\u5b9a\u4e49\u51fd\u6570\u65f6\u6240\u5728\u7684\u4e0a\u4e0b\u6587\u73af\u5883\uff0c\u5728\u672c\u4f8b\u4e2d\u5373\u6307\u5411 window\u3002<\/p>\n<p><strong>\u89e3\u51b3\u65b9\u6848\uff1a<\/strong><\/p>\n<p>\u4e3a\u4e86\u89e3\u51b3\u6b64\u95ee\u9898\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u6cd5\u4e4b\u4e00\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u5e38\u89c4\u51fd\u6570\uff1a<\/strong>\u5c06\u5c0f\u5706\u70b9\u6309\u94ae\u7684 onclick \u4e8b\u4ef6\u4fee\u6539\u4e3a\u5e38\u89c4\u51fd\u6570\uff0c\u8fd9\u6837 this \u5c06\u6307\u5411\u6309\u94ae\u5143\u7d20\u3002<\/li>\n<\/ul>\n<pre>points[i].onclick = function () {\n  chageall(i);\n};\n\nfunction chageall(index) {\n  \/\/ ...\n}<\/pre>\n<ul>\n<li><strong>\u4f7f\u7528\u7bad\u5934\u51fd\u6570\u65f6\u7ed1\u5b9a this\uff1a<\/strong>\u4f7f\u7528\u7bad\u5934\u51fd\u6570\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7 bind() \u65b9\u6cd5\u5c06 this \u7ed1\u5b9a\u5230\u6309\u94ae\u5143\u7d20\u3002<\/li>\n<\/ul>\n<pre>points[i].onclick = function () {\n  chageall.bind(this, i)();\n}.bind(points[i]);<\/pre>\n<p><strong>\u5b8c\u6574\u4ee3\u7801\uff1a<\/strong><\/p>\n<p>\u7ecf\u8fc7\u4fee\u6539\u540e\uff0c\u5b8c\u6574\u7684\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>\/*\n * \u9700\u6c42\n       1. \u9ed8\u8ba4\u81ea\u52a8\u8f6e\u64ad\u72b6\u6001  \u5c0f\u5706\u70b9\u8ddf\u968f\u63a8\u7247\u53d8\u5316\u800c\u53d8\u5316\n       2. \u89e6\u53d1\u72b6\u6001  \u5f53\u9f20\u6807\u60ac\u6d6e\u5c0f\u5706\u70b9\u53d1\u751f\u6837\u5f0f\u6539\u53d8\u5e76\u4e14\u4e0d\u5728\u8f6e\u64ad\n               \u5f53\u9f20\u6807\u8fdb\u884c\u70b9\u51fb\u7684\u65f6\u5019\uff0c\u5bf9\u5e94\u5c0f\u5706\u70b9\u7684\u56fe\u7247\u53d1\u751f\u6539\u53d8\n       3.\u9f20\u6807\u60ac\u6d6e\u5de6\u53f3\u6309\u952e\u7684\u65f6\u5019\uff0c\u56fe\u7247\u4e0d\u5728\u8f6e\u64ad\n           \u5f53\u70b9\u51fb\u7684\u65f6\u5019\uff0c\u4f1a\u6839\u636e\u5f53\u524d\u56fe\u7247\u7684\u4f4d\u7f6e\u53d1\u751f\u5f80\u540e\u6216\u5f80\u524d\u7684\u53d8\u5316        \n *\/\nwindow.onload = function () {\n\n  \/\/1.\u8fdb\u884c\u5143\u7d20\u7684\u83b7\u53d6 \n  \/\/ \u83b7\u53d6\u56fe\u7247\n  let imgs = document.querySelectorAll(\"#img-list li \");\n  \/\/ \u83b7\u53d6\u5c0f\u5706\u70b9\n  let points = document.querySelectorAll(\"#points a\");\n  \/\/ \u83b7\u53d6\u5de6\u53f3\u6309\u94ae\n  let btns = document.querySelectorAll(\".btn\");\n  \/\/ \u5b9a\u4e49\u5f53\u524d\u663e\u793a\u7684\u4e0b\u6807\n  let index = 0;\n  \/\/ \u5b9a\u4e49timer\n  let timer;\n\n  \/\/2.\u8bbe\u8ba1\u65b9\u6cd5\u8ba9\u6240\u6709\u7684\u56fe\u7247\u9690\u85cf\n  function hiddenImages() {\n    for (let i = 0; i &lt; imgs.length; i++) {\n      imgs[i].style.opacity = 0;\n    }\n  }\n\n\n  \/\/  3.\u8bbe\u8ba1\u65b9\u6cd5\u8ba9\u6240\u6709\u7684\u5c0f\u5706\u70b9\u5904\u4e8e\u9690\u85cf\u7684\u72b6\u6001\n  function hiddenPoints() {\n    for (let i = 0; i &lt; points.length; i++) {\n      points[i].className = \"hd\";\n    }\n  }\n\n\n  \/\/ 4.\u8bbe\u8ba1\u65b9\u6cd5\u8ba9\u5c0f\u5706\u70b9\u663e\u793a\u548c\u56fe\u7247\u7684\u663e\u793a\u90fd\u5904\u4e8e\u9690\u85cf\u72b6\u6001\u5e76\u4e14\u6839\u636e\u5f53\u524d\u8bbe\u7f6e\u7684\u4e0b\u6807\u6765\u8fdb\u884c\u663e\u793a\n  function chageAll(i) {\n    hiddenImages();\n    hiddenPoints();\n    imgs[i].style.opacity = 1;\n    points[i].className = \"highlight\";\n  }\n\n\n  \/\/ 5.\u8bbe\u8ba1\u8f6e\u64ad\u65b9\u6cd5\n  function carousel() {\n    timer = setInterval(function () {\n      chageAll(index);\n      index++;\n      \/\/ \u5224\u65ad\u5982\u679c\u4e0b\u6807\u8d85\u51fa\u4e86\u5c31\u56de\u5230\u7b2c\u4e00\u5f20\n      if (index &gt; imgs.length - 1) {\n        index = 0;\n      }\n\n    }, 3000)\n  }\n  carousel();\n\n  \/\/ 6.\u8fdb\u884c\u5c0f\u5706\u70b9\u7684\u89e6\u53d1\n  for (let i = 0; i &lt; points.length; i++) {\n\n    \/\/ \u60ac\u6d6e\u8fdb\u884c\u5b9a\u65f6\u5668\u505c\u6b62\n    points[i].onmouseover = function () {\n      clearInterval(timer);\n    };\n    \/\/ \u9f20\u6807\u79bb\u5f00\u7ee7\u7eed\u8f6e\u64ad\n    points[i].onmouseout = function () {\n      carousel();\n    };\n\n    points[i].index = i;\n\n    points[i].onclick = chageAll.bind(points[i], i);\n  }\n\n\n\n};<\/pre>\n<p>\u4eca\u5929\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u7684\u76f8\u5173\u77e5\u8bc6\uff0c\u5e0c\u671b\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff1b\u5173\u4e8e\u6587\u7ae0\u7684\u6280\u672f\u77e5\u8bc6\u6211\u4eec\u4f1a\u4e00\u70b9\u70b9\u6df1\u5165\u4ecb\u7ecd\uff0c\u6b22\u8fce\u5927\u5bb6\u5173\u6ce8\u7c73\u4e91\u516c\u4f17\u53f7\uff0c\u4e00\u8d77\u5b66\u4e60\u7f16\u7a0b~<\/p>\n<dl>\n<dt><\/dt>\n<dd>\n   \u8f7b\u677e\u8fde\u63a5\u7535\u8111WiFi\uff1a\u8be6\u7ec6\u6b65\u9aa4\u4e0e\u5e38\u89c1\u95ee\u9898\u89e3\u51b3\u6307\u5357\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>\u8f6e\u64ad\u56fe\u70b9\u51fb\u6309\u94ae\u65e0\u6548\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684`onclick`\u4e8b\u4ef6\u4e2d\u7684`this`\u6307\u5411\u4e86`window`\u800c\u4e0d\u662f\u6309\u94ae\uff1f \u4eb2\u7231\u7684\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5982\u679c\u4f60\u70b9\u5f00\u4e86\u8fd9\u7bc7\u6587\u7ae0\uff0c\u8bf4\u660e\u4f60\u5bf9\u300a\u8f6e\u64ad\u56fe\u70b9\u51fb\u6309\u94ae\u65e0\u6548\uff1a\u4e3a\u4ec0\u4e48\u6211\u7684`onclick`\u4e8b\u4ef6\u4e2d\u7684`this`\u6307\u5411\u4e86`window`\u800c\u4e0d\u662f\u6309\u94ae\uff1f 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-52703","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52703","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=52703"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/52703\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=52703"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=52703"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=52703"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}