{"id":3469,"date":"2024-11-10T17:01:13","date_gmt":"2024-11-10T09:01:13","guid":{"rendered":"https:\/\/fwq.ai\/blog\/3469\/"},"modified":"2024-11-10T17:01:13","modified_gmt":"2024-11-10T09:01:13","slug":"js%e5%a6%82%e4%bd%95%e7%82%b9%e5%87%bb%e4%b8%8b%e6%8b%89","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/3469\/","title":{"rendered":"js\u5982\u4f55\u70b9\u51fb\u4e0b\u62c9"},"content":{"rendered":"<blockquote><p>\n  javascript \u70b9\u51fb\u4e0b\u62c9\u5217\u8868\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a1. \u4f7f\u7528 click() \u76f4\u63a5\u89e6\u53d1\u70b9\u51fb\u4e8b\u4ef6\uff1b2. \u4f7f\u7528 dispatchevent() \u6d3e\u53d1\u81ea\u5b9a\u4e49\u4e8b\u4ef6\uff0c\u9700\u8981\u6ce8\u610f\u786e\u4fdd\u4e0b\u62c9\u5217\u8868\u53ef\u89c1\u3001\u6709\u7126\u70b9\u4e14\u672a\u7981\u7528\uff0c\u5e76\u4e14 dispatchevent() \u65b9\u6cd5\u4f1a\u89e6\u53d1\u4e0b\u62c9\u5217\u8868\u5185\u6240\u6709\u5143\u7d20\u7684\u70b9\u51fb\u4e8b\u4ef6\u3002\n<\/p><\/blockquote>\n<p><img decoding=\"async\" src=\"https:\/\/img.php.cn\/upload\/article\/202411\/08\/2024110813064659629.jpg\" class=\"aligncenter\" title=\"js\u5982\u4f55\u70b9\u51fb\u4e0b\u62c9\u63d2\u56fe\" alt=\"js\u5982\u4f55\u70b9\u51fb\u4e0b\u62c9\u63d2\u56fe\" \/><\/p>\n<p><strong>\u5982\u4f55\u5728 JavaScript \u4e2d\u70b9\u51fb\u4e0b\u62c9\u5217\u8868<\/strong><\/p>\n<p>\u5728 JavaScript \u4e2d\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 click() \u65b9\u6cd5\u6216 dispatchEvent() \u65b9\u6cd5\u6765\u70b9\u51fb\u4e0b\u62c9\u5217\u8868\u3002<\/p>\n<p><strong>1. \u4f7f\u7528 click() \u65b9\u6cd5<\/strong><\/p>\n<p>click() \u65b9\u6cd5\u76f4\u63a5\u5411\u4e0b\u62c9\u5217\u8868\u5143\u7d20\u89e6\u53d1\uff1a<\/p>\n<pre>document.getElementById(\"myDropdown\").click();<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>2. \u4f7f\u7528 dispatchEvent() \u65b9\u6cd5<\/strong><\/p>\n<p>dispatchEvent() \u65b9\u6cd5\u6d3e\u53d1\u4e00\u4e2a\u81ea\u5b9a\u4e49\u4e8b\u4ef6\uff0c\u4e5f\u53ef\u4ee5\u89e6\u53d1\u4e0b\u62c9\u5217\u8868\u7684\u70b9\u51fb\u4e8b\u4ef6\uff1a<\/p>\n<pre>var event = new MouseEvent('click');\ndocument.getElementById(\"myDropdown\").dispatchEvent(event);<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p><strong>\u9009\u62e9\u5668<\/strong><\/p>\n<p>\u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 getElementById() \u6765\u67e5\u627e\u4e0b\u62c9\u5217\u8868\u5143\u7d20\u3002\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u9009\u62e9\u5668\uff0c\u4f8b\u5982\uff1a<\/p>\n<ul>\n<li>querySelector()<\/li>\n<li>querySelectorAll()<\/li>\n<li>getElementsByClassName()<\/li>\n<\/ul>\n<p><strong>\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n<ul>\n<li>\u786e\u4fdd\u4e0b\u62c9\u5217\u8868\u5143\u7d20\u53ef\u89c1\u4e14\u6709\u7126\u70b9\u3002<\/li>\n<li>\u5982\u679c\u4e0b\u62c9\u5217\u8868\u662f\u7981\u7528\u7684\uff0c\u70b9\u51fb\u4e8b\u4ef6\u5c06\u65e0\u6548\u3002<\/li>\n<li>\u5982\u679c\u4e0b\u62c9\u5217\u8868\u5185\u90e8\u8fd8\u6709\u5176\u4ed6\u5143\u7d20\uff0c\u4f7f\u7528 dispatchEvent() \u65b9\u6cd5\u4f1a\u89e6\u53d1\u6240\u6709\u5143\u7d20\u7684\u70b9\u51fb\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u5c31\u662fjs\u5982\u4f55\u70b9\u51fb\u4e0b\u62c9\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>javascript \u70b9\u51fb\u4e0b\u62c9\u5217\u8868\u7684\u65b9\u6cd5\u6709\u4e24\u79cd\uff1a1. \u4f7f\u7528 click() \u76f4\u63a5\u89e6\u53d1\u70b9\u51fb\u4e8b\u4ef6\uff1b2. \u4f7f\u7528 dispatchevent() \u6d3e\u53d1\u81ea\u5b9a\u4e49\u4e8b\u4ef6\uff0c\u9700\u8981\u6ce8\u610f\u786e\u4fdd\u4e0b\u62c9\u5217\u8868\u53ef\u89c1\u3001\u6709\u7126\u70b9\u4e14\u672a\u7981\u7528\uff0c\u5e76\u4e14 dispatchevent() \u65b9\u6cd5\u4f1a\u89e6\u53d1\u4e0b\u62c9\u5217\u8868\u5185\u6240\u6709\u5143\u7d20\u7684\u70b9\u51fb\u4e8b\u4ef6\u3002 \u5982\u4f55\u5728 JavaScript \u4e2d\u70b9\u51fb\u4e0b\u62c9\u5217\u8868 \u5728 JavaScript \u4e2d\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528 click() \u65b9\u6cd5\u6216 dispatchEvent() \u65b9\u6cd5\u6765\u70b9\u51fb\u4e0b\u62c9\u5217\u8868\u3002 1. \u4f7f\u7528 click() \u65b9\u6cd5 click() \u65b9\u6cd5\u76f4\u63a5\u5411\u4e0b\u62c9\u5217\u8868\u5143\u7d20\u89e6\u53d1\uff1a document.getElementById(&#8220;myDropdown&#8221;).click(); \u767b\u5f55\u540e\u590d\u5236 2. \u4f7f\u7528 dispatchEvent() \u65b9\u6cd5 dispatchEvent() \u65b9\u6cd5\u6d3e\u53d1\u4e00\u4e2a\u81ea\u5b9a\u4e49\u4e8b\u4ef6\uff0c\u4e5f\u53ef\u4ee5\u89e6\u53d1\u4e0b\u62c9\u5217\u8868\u7684\u70b9\u51fb\u4e8b\u4ef6\uff1a var event = new MouseEvent(&#8216;click&#8217;); document.getElementById(&#8220;myDropdown&#8221;).dispatchEvent(event); \u767b\u5f55\u540e\u590d\u5236 \u9009\u62e9\u5668 \u4e0a\u8ff0\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 getElementById() \u6765\u67e5\u627e\u4e0b\u62c9\u5217\u8868\u5143\u7d20\u3002\u4f60\u8fd8\u53ef\u4ee5\u4f7f\u7528\u5176\u4ed6\u9009\u62e9\u5668\uff0c\u4f8b\u5982\uff1a querySelector() querySelectorAll() getElementsByClassName() \u6ce8\u610f\u4e8b\u9879 \u786e\u4fdd\u4e0b\u62c9\u5217\u8868\u5143\u7d20\u53ef\u89c1\u4e14\u6709\u7126\u70b9\u3002 \u5982\u679c\u4e0b\u62c9\u5217\u8868\u662f\u7981\u7528\u7684\uff0c\u70b9\u51fb\u4e8b\u4ef6\u5c06\u65e0\u6548\u3002 \u5982\u679c\u4e0b\u62c9\u5217\u8868\u5185\u90e8\u8fd8\u6709\u5176\u4ed6\u5143\u7d20\uff0c\u4f7f\u7528 dispatchEvent() \u65b9\u6cd5\u4f1a\u89e6\u53d1\u6240\u6709\u5143\u7d20\u7684\u70b9\u51fb\u4e8b\u4ef6\u3002 \u4ee5\u4e0a\u5c31\u662fjs\u5982\u4f55\u70b9\u51fb\u4e0b\u62c9\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/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-3469","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3469","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=3469"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/3469\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=3469"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=3469"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=3469"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}