{"id":168527,"date":"2024-05-08T16:25:50","date_gmt":"2024-05-08T08:25:50","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/168527.html"},"modified":"2024-05-08T16:25:54","modified_gmt":"2024-05-08T08:25:54","slug":"javascript-%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96%e9%bc%a0%e6%a0%87%e7%84%a6%e7%82%b9","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/168527.html","title":{"rendered":"JavaScript \u600e\u4e48\u83b7\u53d6\u9f20\u6807\u7126\u70b9"},"content":{"rendered":"

\"JavaScript<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u83b7\u53d6\u9f20\u6807\u7126\u70b9\u4e3b\u8981\u901a\u8fc7\u76d1\u542c\u4e8b\u4ef6\u6765\u5b9e\u73b0\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u4f7f\u7528addEventListener<\/code>\u6765\u76d1\u542c\u9f20\u6807\u4e8b\u4ef6\u3001\u5229\u7528document.activeElement<\/code>\u83b7\u5f97\u5f53\u524d\u7126\u70b9\u5143\u7d20<\/strong>\u3002\u5728\u8fd9\u4e9b\u65b9\u6cd5\u4e2d\uff0c\u4f7f\u7528addEventListener<\/code>\u6765\u76d1\u542c\u9f20\u6807\u4e8b\u4ef6<\/strong>\u662f\u6700\u5e38\u89c1\u4e14\u7075\u6d3b\u7684\u65b9\u5f0f\uff0c\u5b83\u5141\u8bb8\u5f00\u53d1\u8005\u5728\u7528\u6237\u4e0e\u9875\u9762\u4ea4\u4e92\u65f6\u83b7\u5f97\u9f20\u6807\u7684\u4f4d\u7f6e\u548c\u72b6\u6001\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u76d1\u542c\u9f20\u6807\u4e8b\u4ef6\u83b7\u53d6\u7126\u70b9<\/h3>\n<\/p>\n

JavaScript\u4e2d\uff0c\u6700\u76f4\u63a5\u83b7\u53d6\u9f20\u6807\u7126\u70b9\u7684\u65b9\u6cd5\u662f\u901a\u8fc7\u6dfb\u52a0\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u76d1\u542c\u9f20\u6807\u76f8\u5173\u7684\u4e8b\u4ef6\u3002\u4f8b\u5982\uff0cclick<\/code>\u3001mousemove<\/code>\u3001mouseover<\/code>\u3001mouseout<\/code>\u7b49\u9f20\u6807\u4e8b\u4ef6<\/strong>\u3002\u6bcf\u5f53\u7528\u6237\u4e0e\u9875\u9762\u4e0a\u7684\u5143\u7d20\u8fdb\u884c\u4ea4\u4e92\u65f6\uff0c\u901a\u8fc7\u8fd9\u4e9b\u4e8b\u4ef6\u53ef\u4ee5\u6355\u83b7\u5230\u9f20\u6807\u7684\u5f53\u524d\u72b6\u6001\u548c\u4f4d\u7f6e\u3002<\/p>\n<\/p>\n

\u901a\u8fc7addEventListener<\/code>\u65b9\u6cd5\uff0c\u53ef\u4ee5\u4e3a\u5143\u7d20\u6dfb\u52a0\u4e8b\u4ef6\u76d1\u542c\u3002\u5f53\u6307\u5b9a\u7684\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u53ef\u4ee5\u83b7\u53d6\u5230\u4e8b\u4ef6\u5bf9\u8c61event<\/code>\uff0c\u5b83\u5305\u542b\u4e86\u4e8b\u4ef6\u76f8\u5173\u7684\u6240\u6709\u4fe1\u606f\uff0c\u5305\u62ec\u9f20\u6807\u7684\u4f4d\u7f6e\uff08\u901a\u8fc7event.clientX<\/code>\u548cevent.clientY<\/code>\u5c5e\u6027\uff09\u3002<\/p>\n<\/p>\n

\u4f8b\u5982\uff0c\u76d1\u542cmousemove<\/code>\u4e8b\u4ef6\u6765\u8ffd\u8e2a\u9f20\u6807\u5728\u9875\u9762\u4e0a\u7684\u79fb\u52a8\uff1a<\/p>\n<\/p>\n

document.addEventListener('mousemove', function(event) {<\/p>\n
    console.log(`\u9f20\u6807\u4f4d\u7f6e\uff1aX=${event.clientX}, Y=${event.clientY}`);<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u5229\u7528document.activeElement\u83b7\u53d6\u7126\u70b9\u5143\u7d20<\/h3>\n<\/p>\n
\u9664\u4e86\u76d1\u542c\u9f20\u6807\u4e8b\u4ef6\u5916\uff0c\u8fd8\u53ef\u4ee5\u5229\u7528document.activeElement<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u5f53\u524d\u5177\u6709\u7126\u70b9\u7684\u5143\u7d20\u3002\u8fd9\u79cd\u65b9\u6cd5\u867d\u7136\u4e0d\u80fd\u76f4\u63a5\u83b7\u5f97\u9f20\u6807\u4f4d\u7f6e\uff0c\u4f46\u80fd\u6709\u6548\u5730\u77e5\u6653\u54ea\u4e2a\u5143\u7d20\u6b63\u5728\u4e0e\u7528\u6237\u4ea4\u4e92\u3002<\/p>\n<\/p>\n
\u5728\u8868\u5355\u8f93\u5165\u3001\u70b9\u51fb\u6309\u94ae\u7b49\u60c5\u51b5\u4e0b\uff0cdocument.activeElement<\/code>\u4f1a\u8fd4\u56de\u5f53\u524d\u83b7\u5f97\u7126\u70b9\u7684\u5143\u7d20\u3002\u8fd9\u5bf9\u4e8e\u786e\u5b9a\u7528\u6237\u5f53\u524d\u4ea4\u4e9a\u514b\u6d3b\u52a8\u4ee5\u53ca\u8fdb\u884c\u4e00\u4e9b\u57fa\u4e8e\u7126\u70b9\u63a7\u5236\u7684\u64cd\u4f5c\u975e\u5e38\u6709\u7528\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff0c\u53ef\u4ee5\u901a\u8fc7\u4e0b\u9762\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u5f53\u524d\u83b7\u53d6\u7126\u70b9\u7684\u5143\u7d20\u5e76\u8f93\u51fa\u5176\u6807\u7b7e\u540d\u79f0\uff1a<\/p>\n<\/p>\n
document.addEventListener('click', function() {<\/p>\n
    var focusedElement = document.activeElement;<\/p>\n
    console.log(`\u5f53\u524d\u7126\u70b9\u5143\u7d20\u6807\u7b7e\uff1a${focusedElement.tagName}`);<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u7ed3\u5408\u7126\u70b9\u4e8b\u4ef6\u548c\u9f20\u6807\u4e8b\u4ef6<\/h3>\n<\/p>\n
\u8981\u66f4\u7cbe\u7ec6\u5730\u638c\u63e1\u9f20\u6807\u7126\u70b9\uff0c\u53ef\u4ee5\u7ed3\u5408\u4f7f\u7528\u7126\u70b9\u4e8b\u4ef6\u548c\u9f20\u6807\u4e8b\u4ef6\u3002\u7126\u70b9\u4e8b\u4ef6\u5982focus<\/code>\u548cblur<\/code>\u53ef\u4ee5\u5e2e\u52a9\u68c0\u6d4b\u5143\u7d20\u4f55\u65f6\u83b7\u5f97\u6216\u5931\u53bb\u7126\u70b9\u3002\u901a\u8fc7\u5728\u5143\u7d20\u4e0a\u540c\u65f6\u76d1\u542c\u7126\u70b9\u4e8b\u4ef6\u548c\u9f20\u6807\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u83b7\u5f97\u5173\u4e8e\u7528\u6237\u884c\u4e3a\u66f4\u4e3a\u8be6\u7ec6\u7684\u4fe1\u606f\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff0c\u4e3a\u6587\u672c\u6846\u6dfb\u52a0focus<\/code>\u4e8b\u4ef6\u76d1\u542c\uff0c\u4ee5\u53ca\u4e3a\u6574\u4e2a\u6587\u6863\u6dfb\u52a0mousemove<\/code>\u4e8b\u4ef6\u76d1\u542c\uff0c\u53ef\u4ee5\u5728\u7528\u6237\u6b63\u5728\u8f93\u5165\u65f6\u5b9e\u65f6\u8ffd\u8e2a\u9f20\u6807\u7684\u4f4d\u7f6e\u3002<\/p>\n<\/p>\n
document.querySelector('input[type="text"]').addEventListener('focus', function() {<\/p>\n
    document.addEventListener('mousemove', function(event) {<\/p>\n
        console.log(`\u8f93\u5165\u65f6\u9f20\u6807\u4f4d\u7f6e\uff1aX=${event.clientX}, Y=${event.clientY}`);<\/p>\n
    });<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u7efc\u5408\u5e94\u7528<\/h3>\n<\/p>\n
\u5728\u5f00\u53d1\u8fc7\u7a0b\u4e2d\uff0c\u901a\u5e38\u9700\u8981\u6839\u636e\u5177\u4f53\u7684\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u9f20\u6807\u7126\u70b9\u3002\u65e0\u8bba\u662f\u901a\u8fc7\u76d1\u542c\u9f20\u6807\u4e8b\u4ef6\u6765\u83b7\u53d6\u9f20\u6807\u4f4d\u7f6e\uff0c\u8fd8\u662f\u901a\u8fc7document.activeElement<\/code>\u6765\u786e\u5b9a\u5f53\u524d\u7126\u70b9\u5143\u7d20\uff0c\u7406\u89e3\u8fd9\u4e9b\u57fa\u672c\u7684\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u573a\u666f\u5bf9\u5f00\u53d1\u9ad8\u8d28\u91cf\u4ea4\u4e9a\u514b\u5e94\u7528\u975e\u5e38\u5173\u952e\u3002<\/p>\n<\/p>\n
\u4f8b\u5982\uff0c\u5728\u505a\u4e00\u4e2a\u753b\u56fe\u5e94\u7528\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u76d1\u542cmousedown<\/code>\u3001mousemove<\/code>\u3001mouseup<\/code>\u4e8b\u4ef6\u6765\u5b9e\u73b0\u9f20\u6807\u753b\u56fe\u7684\u529f\u80fd\u3002\u800c\u5728\u5b9e\u73b0\u4e00\u4e2a\u57fa\u4e8e\u952e\u76d8\u5bfc\u822a\u7684\u83dc\u5355\u65f6\uff0cdocument.activeElement<\/code>\u7684\u4f7f\u7528\u5219\u663e\u5f97\u5c24\u4e3a\u91cd\u8981\u3002<\/p>\n<\/p>\n
\u5bf9\u4e8e\u590d\u6742\u7684\u4ea4\u4e92\u5f0f\u5e94\u7528\uff0c\u7efc\u5408\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u6765\u83b7\u53d6\u548c\u7ba1\u7406\u9f20\u6807\u7126\u70b9\uff0c\u53ef\u4ee5\u63d0\u4f9b\u66f4\u6d41\u7545\u3001\u76f4\u89c2\u7684\u7528\u6237\u4f53\u9a8c\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u7ed3\u5408\u4f7f\u7528\u9f20\u6807\u4e8b\u4ef6\u548c\u7126\u70b9\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u5728\u7528\u6237\u4e0e\u7f51\u9875\u4e92\u52a8\u7684\u540c\u65f6\uff0c\u7cbe\u786e\u63a7\u5236\u9875\u9762\u5143\u7d20\u7684\u663e\u793a\u6216\u884c\u4e3a\u3002<\/p>\n<\/p>\n
\u5b9e\u73b0\u9ad8\u6548\u3001\u7528\u6237\u53cb\u597d\u7684\u9f20\u6807\u7126\u70b9\u7ba1\u7406\uff0c\u8981\u6c42\u5f00\u53d1\u8005\u4e0d\u4ec5\u8981\u719f\u7ec3\u4f7f\u7528JavaScript\u63d0\u4f9b\u7684\u4e8b\u4ef6\u548c\u5c5e\u6027\uff0c\u8fd8\u8981\u5177\u5907\u521b\u65b0\u548c\u5b9e\u9a8c\u7684\u7cbe\u795e\uff0c\u4e0d\u65ad\u63a2\u7d22\u6ee1\u8db3\u7528\u6237\u9700\u6c42\u7684\u6700\u4f73\u5b9e\u8df5\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u5982\u4f55\u5728JavaScript\u4e2d\u83b7\u53d6\u9f20\u6807\u7126\u70b9\uff1f<\/strong><\/p>\n
1. \u4f7f\u7528focus()\u65b9\u6cd5\u8ba9\u5143\u7d20\u83b7\u53d6\u9f20\u6807\u7126\u70b9<\/strong><\/p>\n
\u53ef\u4ee5\u4f7f\u7528JavaScript\u4e2d\u7684focus()\u65b9\u6cd5\u6765\u8ba9\u5143\u7d20\u83b7\u53d6\u9f20\u6807\u7126\u70b9\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60f3\u8ba9\u4e00\u4e2a\u6587\u672c\u6846\u83b7\u53d6\u7126\u70b9\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n
document.getElementById("myInput").focus();\n<\/code><\/pre>\n
\u8fd9\u6837\uff0c\u5f53\u9875\u9762\u52a0\u8f7d\u5b8c\u6210\u65f6\uff0c\u6587\u672c\u6846\u5c31\u4f1a\u81ea\u52a8\u83b7\u53d6\u7126\u70b9\u3002<\/p>\n
2. \u4f7f\u7528addEventListener()\u6765\u76d1\u542c\u9f20\u6807\u8fdb\u5165\u4e8b\u4ef6<\/strong><\/p>\n
\u9664\u4e86\u4f7f\u7528focus()\u65b9\u6cd5\u5916\uff0c\u8fd8\u53ef\u4ee5\u4f7f\u7528addEventListener()\u6765\u76d1\u542c\u9f20\u6807\u8fdb\u5165\u4e8b\u4ef6\u3002\u5f53\u9f20\u6807\u8fdb\u5165\u5143\u7d20\u65f6\uff0c\u6267\u884c\u4e00\u6bb5\u4ee3\u7801\u6765\u83b7\u53d6\u7126\u70b9\u3002\u4f8b\u5982\uff1a<\/p>\n
document.getElementById("myInput").addEventListener("mouseover", function() {\n  this.focus();\n});\n<\/code><\/pre>\n
\u8fd9\u6837\uff0c\u5f53\u9f20\u6807\u8fdb\u5165\u8be5\u5143\u7d20\u65f6\uff0c\u6587\u672c\u6846\u5c31\u4f1a\u83b7\u53d6\u7126\u70b9\u3002<\/p>\n
3. \u4f7f\u7528autofocus\u5c5e\u6027\u8ba9\u9875\u9762\u52a0\u8f7d\u5b8c\u6210\u540e\u81ea\u52a8\u83b7\u53d6\u7126\u70b9<\/strong><\/p>\n
\u5728HTML\u4e2d\uff0c\u8fd8\u53ef\u4ee5\u901a\u8fc7\u7ed9\u5143\u7d20\u6dfb\u52a0autofocus\u5c5e\u6027\u6765\u5b9e\u73b0\u5728\u9875\u9762\u52a0\u8f7d\u5b8c\u6210\u540e\u81ea\u52a8\u83b7\u53d6\u7126\u70b9\u3002\u4f8b\u5982\uff1a<\/p>\n
<input type="text" id="myInput" autofocus>\n<\/code><\/pre>\n
\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u5f53\u9875\u9762\u52a0\u8f7d\u5b8c\u6210\u540e\uff0c\u6587\u672c\u6846\u5c31\u4f1a\u81ea\u52a8\u83b7\u53d6\u7126\u70b9\u3002<\/p>\n
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528autofocus\u5c5e\u6027\u53ea\u80fd\u5728\u9875\u9762\u52a0\u8f7d\u65f6\u81ea\u52a8\u83b7\u53d6\u7126\u70b9\uff0c\u65e0\u6cd5\u901a\u8fc7\u5176\u4ed6\u65b9\u5f0f\u6765\u89e6\u53d1\u83b7\u53d6\u7126\u70b9\u7684\u884c\u4e3a\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u4e2d\uff0c\u83b7\u53d6\u9f20\u6807\u7126\u70b9\u4e3b\u8981\u901a\u8fc7\u76d1\u542c\u4e8b\u4ef6\u6765\u5b9e\u73b0\u3002\u8fd9\u4e9b\u65b9\u6cd5\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u4f7f\u7528addEventList […]","protected":false},"author":3,"featured_media":168532,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/168527"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=168527"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/168527\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/168532"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=168527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=168527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=168527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}