{"id":4083,"date":"2024-11-10T17:59:09","date_gmt":"2024-11-10T09:59:09","guid":{"rendered":"https:\/\/fwq.ai\/blog\/4083\/"},"modified":"2024-11-10T17:59:09","modified_gmt":"2024-11-10T09:59:09","slug":"%e4%b8%ba%e4%bb%80%e4%b9%88%e5%8c%bf%e5%90%8d%e5%87%bd%e6%95%b0%e4%b8%ad%e7%9a%84-this-%e6%8c%87%e5%90%91-window%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/4083\/","title":{"rendered":"\u4e3a\u4ec0\u4e48\u533f\u540d\u51fd\u6570\u4e2d\u7684 `this` \u6307\u5411 `window`\uff1f"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/001\/246\/273\/173122255589393.jpg\" class=\"aligncenter\" title=\"\u4e3a\u4ec0\u4e48\u533f\u540d\u51fd\u6570\u4e2d\u7684 `this` \u6307\u5411 `window`\uff1f\u63d2\u56fe\" alt=\"\u4e3a\u4ec0\u4e48\u533f\u540d\u51fd\u6570\u4e2d\u7684 `this` \u6307\u5411 `window`\uff1f\u63d2\u56fe\" \/><\/p>\n<p><strong>\u4e3a\u4f55\u5728\u533f\u540d\u51fd\u6570\u4e2d this \u6307\u5411 window<\/strong><\/p>\n<p>\u5728 javascript \u4e2d\uff0cthis \u5173\u952e\u5b57\u4ee3\u8868\u5f53\u524d\u6267\u884c\u73af\u5883\u4e2d\u7684\u5bf9\u8c61\u3002\u4f46\u662f\uff0c\u5728\u533f\u540d\u51fd\u6570\u4e2d\uff0cthis \u7684\u6307\u5411\u53ef\u80fd\u4f1a\u51fa\u4e4e\u610f\u6599\u3002<\/p>\n<p>\u5728\u7ed9\u5b9a\u7684\u4ee3\u7801\u793a\u4f8b\u4e2d\uff1a<\/p>\n<pre>var obj = {\n    x: 100,\n    y: function () {\n        setTimeout(\n            function () { alert(this.x); 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