{"id":166434,"date":"2024-05-08T15:36:35","date_gmt":"2024-05-08T07:36:35","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166434.html"},"modified":"2024-05-08T15:36:40","modified_gmt":"2024-05-08T07:36:40","slug":"javascript%e6%80%8e%e4%b9%88%e5%8a%a8%e6%80%81%e8%8e%b7%e5%8f%96%e5%b1%8f%e5%b9%95%e5%ae%bd%e5%ba%a6","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/166434.html","title":{"rendered":"JavaScript\u600e\u4e48\u52a8\u6001\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6"},"content":{"rendered":"

\"JavaScript\u600e\u4e48\u52a8\u6001\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\"<\/p>\n

\u5728\u73b0\u4ee3web\u5f00\u53d1\u4e2d\uff0c\u52a8\u6001\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\u662f\u4e00\u4e2a\u5e38\u89c1\u800c\u91cd\u8981\u7684\u9700\u6c42\uff0c\u7279\u522b\u662f\u5728\u5236\u4f5c\u54cd\u5e94\u5f0f\u7f51\u9875\u548c\u79fb\u52a8\u7aef\u5e94\u7528\u65f6\u3002\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\uff0cJavaScript\u63d0\u4f9b\u4e86\u51e0\u4e2a\u91cd\u8981\u7684API\uff1awindow.innerWidth<\/code>\u3001document.documentElement.clientWidth<\/code>\u3001\u4ee5\u53ca\u4f7f\u7528resize<\/code>\u4e8b\u4ef6\u76d1\u542c\u5c4f\u5e55\u5c3a\u5bf8\u53d8\u5316<\/strong>\u3002\u8fd9\u4e9b\u624b\u6bb5\u5141\u8bb8\u5f00\u53d1\u8005\u83b7\u5f97\u5e76\u6839\u636e\u5c4f\u5e55\u5bbd\u5ea6\u8c03\u6574\u7f51\u9875\u5e03\u5c40\u6216\u529f\u80fd\uff0c\u4ece\u800c\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u63a2\u8ba8\u8fd9\u4e9b\u65b9\u6cd5\u7684\u4f7f\u7528\uff0c\u5e76\u7740\u91cd\u4ecb\u7ecd\u5982\u4f55\u6709\u6548\u5229\u7528resize<\/code>\u4e8b\u4ef6\u76d1\u542c\u5c4f\u5e55\u5bbd\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n<\/p>\n

\u9996\u5148\uff0cwindow.innerWidth<\/code>\u662f\u6700\u76f4\u63a5\u83b7\u53d6\u6d4f\u89c8\u5668\u7a97\u53e3\u5bbd\u5ea6\u7684\u5c5e\u6027\u3002\u5b83\u8fd4\u56de\u7a97\u53e3\u7684\u5185\u90e8\u5bbd\u5ea6\uff08\u5305\u62ec\u6eda\u52a8\u6761\uff09\u3002\u8fd9\u5bf9\u4e8e\u54cd\u5e94\u5f0f\u8bbe\u8ba1\u5c24\u5176\u91cd\u8981\uff0c\u56e0\u4e3a\u5b83\u8003\u8651\u4e86\u7528\u6237\u53ef\u80fd\u6253\u5f00\u7684\u6eda\u52a8\u6761\uff0c\u4f7f\u5f97\u5185\u5bb9\u9002\u914d\u66f4\u52a0\u7cbe\u786e\u3002<\/p>\n<\/p>\n

\u4e00\u3001WINDOW.INNERWIDTH<\/h3>\n<\/p>\n

window.innerWidth<\/code>\u63d0\u4f9b\u4e86\u6d4f\u89c8\u5668\u89c6\u7a97\uff08viewport\uff09\u7684\u5bbd\u5ea6\uff0c\u5305\u62ec\u5782\u76f4\u6eda\u52a8\u6761\uff08\u5982\u679c\u5b58\u5728\u7684\u8bdd\uff09\u3002\u8fd9\u662f\u52a8\u6001\u83b7\u53d6\u6d4f\u89c8\u5668\u5bbd\u5ea6\u6700\u7b80\u5355\u76f4\u63a5\u7684\u65b9\u6cd5\u3002\u5b83\u7684\u4f7f\u7528\u975e\u5e38\u76f4\u63a5\uff0c\u53ea\u9700\u8981\u4e00\u884c\u4ee3\u7801\u5c31\u53ef\u4ee5\u83b7\u53d6\u5f53\u524d\u7684\u5c4f\u5e55\u5bbd\u5ea6\uff1a<\/p>\n<\/p>\n

let screenWidth = window.innerWidth;<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u503c\u662f\u5b9e\u65f6\u53d8\u52a8\u7684\uff0c\u5b83\u968f\u7740\u7a97\u53e3\u7684\u7f29\u653e\u800c\u6539\u53d8\u3002\u4e3a\u4e86\u52a8\u6001\u5730\u54cd\u5e94\u8fd9\u79cd\u53d8\u5316\uff0c\u53ef\u4ee5\u7ed3\u5408resize<\/code>\u4e8b\u4ef6\u6765\u66f4\u65b0\u53d8\u91cf\u6216\u754c\u9762\u5143\u7d20\u3002<\/p>\n<\/p>\n
\u4e8c\u3001DOCUMENT.DOCUMENTELEMENT.CLIENTWIDTH<\/h3>\n<\/p>\n
\u4e0ewindow.innerWidth<\/code>\u76f8\u6bd4\uff0cdocument.documentElement.clientWidth<\/code>\u8fd4\u56de\u7684\u662f\u5e03\u5c40\u89c6\u53e3\u7684\u5bbd\u5ea6\uff0c\u4e0d\u5305\u62ec\u5782\u76f4\u6eda\u52a8\u6761\u3002\u8fd9\u5728\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\u4e0b\u53ef\u80fd\u66f4\u52a0\u9002\u7528\uff0c\u5c24\u5176\u662f\u5f53\u4f60\u9700\u8981\u7eaf\u51c0\u7684\u5185\u5bb9\u89c6\u89c9\u5bbd\u5ea6\u65f6\u3002<\/p>\n<\/p>\n
let contentWidth = document.documentElement.clientWidth;<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u66f4\u5173\u6ce8\u4e8e\u9875\u9762\u5185\u5bb9\u5b9e\u9645\u5360\u636e\u7684\u7a7a\u95f4\uff0c\u5bf9\u4e8e\u4e0d\u5e0c\u671b\u6eda\u52a8\u6761\u5bbd\u5ea6\u5f71\u54cd\u8ba1\u7b97\u7684\u573a\u666f\u7279\u522b\u6709\u7528\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5229\u7528RESIZE\u4e8b\u4ef6\u76d1\u542c\u5c4f\u5e55\u5c3a\u5bf8\u7684\u53d8\u5316<\/h3>\n<\/p>\n
\u52a8\u6001\u76d1\u542c\u5c4f\u5e55\u5bbd\u5ea6\u53d8\u5316\u8fdb\u800c\u91c7\u53d6\u4e00\u5b9a\u7684\u54cd\u5e94\u63aa\u65bd\u662f\u5f00\u53d1\u4e2d\u7684\u5e38\u89c1\u9700\u6c42\u3002\u901a\u8fc7\u4f7f\u7528resize<\/code>\u4e8b\u4ef6\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5b9e\u65f6\u6355\u6349\u5230\u7a97\u53e3\u5c3a\u5bf8\u7684\u53d8\u5316\uff0c\u5e76\u6267\u884c\u76f8\u5e94\u7684\u903b\u8f91\u5904\u7406\u3002<\/p>\n<\/p>\n
window.addEventListener('resize', function() {<\/p>\n
    let screenWidth = window.innerWidth;<\/p>\n
    \/\/ \u6839\u636escreenWidth\u6267\u884c\u76f8\u5e94\u903b\u8f91<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u5b9e\u9645\u4f7f\u7528\u4e2d\uff0c\u9488\u5bf9resize<\/code>\u4e8b\u4ef6\uff0c\u6709\u5fc5\u8981\u505a\u4e00\u4e9b\u6027\u80fd\u4f18\u5316\uff0c\u5982\u9632\u6296\uff08debouncing\uff09\u6216\u8282\u6d41\uff08throttling\uff09\uff0c\u4ee5\u907f\u514d\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u88ab\u8fc7\u4e8e\u9891\u7e41\u8c03\u7528\uff0c\u5bfc\u81f4\u9875\u9762\u54cd\u5e94\u53d8\u6162\u6216\u51fa\u73b0\u6027\u80fd\u95ee\u9898\u3002<\/p>\n<\/p>\n
\u56db\u3001\u8de8\u8bbe\u5907\u548c\u6d4f\u89c8\u5668\u7684\u517c\u5bb9\u6027\u5904\u7406<\/h3>\n<\/p>\n
\u867d\u7136\u4e0a\u8ff0\u65b9\u6cd5\u5728\u5927\u591a\u6570\u73b0\u4ee3\u6d4f\u89c8\u5668\u4e2d\u90fd\u80fd\u6b63\u5e38\u5de5\u4f5c\uff0c\u4f46\u5728\u4e0d\u540c\u8bbe\u5907\u548c\u6d4f\u89c8\u5668\u4e0a\uff0c\u5c24\u5176\u662f\u65e7\u7248\u6d4f\u89c8\u5668\u4e2d\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u517c\u5bb9\u6027\u95ee\u9898\u3002\u9488\u5bf9\u8fd9\u79cd\u60c5\u51b5\uff0c\u5f00\u53d1\u8005\u9700\u8981\u505a\u597d\u76f8\u5e94\u7684\u517c\u5bb9\u6027\u5904\u7406\u6216\u8005\u4f7f\u7528\u73b0\u4ee3\u5316\u7684\u524d\u7aef\u6846\u67b6\u548c\u5e93\uff0c\u5982Bootstrap\u6216React\u7b49\uff0c\u8fd9\u4e9b\u6846\u67b6\u63d0\u4f9b\u4e86\u4e00\u5957\u89e3\u51b3\u65b9\u6848\u6765\u7b80\u5316\u54cd\u5e94\u5f0f\u5e03\u5c40\u7684\u5b9e\u73b0\u3002<\/p>\n<\/p>\n
\u4e3a\u4e86\u4fdd\u8bc1\u4ee3\u7801\u7684\u5065\u58ee\u6027\u548c\u517c\u5bb9\u6027\uff0c\u4f7f\u7528\u8fd9\u4e9bAPI\u65f6\uff0c\u5efa\u8bae\u5728\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\u4e4b\u524d\uff0c\u5148\u5224\u65ad\u5b83\u4eec\u662f\u5426\u5b58\u5728\u3002\u540c\u65f6\uff0c\u4e5f\u8981\u6ce8\u610f\u5728\u5408\u9002\u7684\u65f6\u673a\u79fb\u9664resize<\/code>\u4e8b\u4ef6\u76d1\u542c\u5668\uff0c\u4ee5\u9632\u6b62\u5185\u5b58\u6cc4\u6f0f\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u5b9e\u8df5\u6848\u4f8b\u5206\u6790<\/h3>\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u8ba9\u6211\u4eec\u901a\u8fc7\u51e0\u4e2a\u5b9e\u8df5\u6848\u4f8b\u6765\u8fdb\u4e00\u6b65\u7406\u89e3\u5982\u4f55\u7ed3\u5408\u4e0a\u8ff0\u65b9\u6cd5\u6765\u52a8\u6001\u83b7\u53d6\u548c\u5229\u7528\u5c4f\u5e55\u5bbd\u5ea6\u3002\u6848\u4f8b\u5c06\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\u54cd\u5e94\u5f0f\u5bfc\u822a\u680f\u3001\u57fa\u4e8e\u5c4f\u5e55\u5bbd\u5ea6\u7684\u5e03\u5c40\u8c03\u6574\u3001\u4ee5\u53ca\u52a8\u6001\u52a0\u8f7d\u4e0d\u540c\u5206\u8fa8\u7387\u7684\u56fe\u7247\u7b49\u3002<\/p>\n<\/p>\n
\u8fd9\u4e9b\u6848\u4f8b\u5c06\u5c55\u793a\u5982\u4f55\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u8fd0\u7528\u52a8\u6001\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\u7684\u6280\u672f\uff0c\u4ee5\u53ca\u5982\u4f55\u7ed3\u5408CSS\u5a92\u4f53\u67e5\u8be2\u3001JavaScript\u548c\u5404\u79cd\u524d\u7aef\u6846\u67b6\u6280\u672f\uff0c\u6765\u5b9e\u73b0\u590d\u6742\u7684\u54cd\u5e94\u5f0f\u5e03\u5c40\u548c\u529f\u80fd\u3002<\/p>\n<\/p>\n
\u603b\u4e4b\uff0c\u52a8\u6001\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\u662f\u73b0\u4ee3web\u5f00\u53d1\u4e2d\u7684\u4e00\u4e2a\u57fa\u672c\u800c\u91cd\u8981\u7684\u6280\u80fd\u3002\u901a\u8fc7\u5408\u7406\u5229\u7528window.innerWidth<\/code>\u3001document.documentElement.clientWidth<\/code>\u548cresize<\/code>\u4e8b\u4ef6\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u5b9e\u73b0\u4e30\u5bcc\u7684\u54cd\u5e94\u5f0f\u8bbe\u8ba1\u548c\u529f\u80fd\uff0c\u4ece\u800c\u63d0\u5347\u7528\u6237\u4f53\u9a8c\u3002\u8bb0\u4f4f\uff0c\u7ed3\u5408\u8fd9\u4e9b\u6280\u672f\u7684\u4f7f\u7528\uff0c\u8fd8\u9700\u8981\u6ce8\u610f\u6027\u80fd\u4f18\u5316\u548c\u8de8\u6d4f\u89c8\u5668\u7684\u517c\u5bb9\u6027\u95ee\u9898\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
1. \u5982\u4f55\u4f7f\u7528JavaScript\u6765\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\uff1f<\/strong><\/p>\n
\u8981\u52a8\u6001\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528JavaScript\u7684window<\/code>\u5bf9\u8c61\u7684innerWidth<\/code>\u5c5e\u6027\u3002\u8fd9\u4e2a\u5c5e\u6027\u8fd4\u56de\u6d4f\u89c8\u5668\u7a97\u53e3\u7684\u5185\u90e8\u5bbd\u5ea6\uff0c\u5305\u62ec\u6eda\u52a8\u6761\u7684\u5bbd\u5ea6\uff08\u5982\u679c\u6709\uff09\u3002\u901a\u8fc7\u83b7\u53d6\u8fd9\u4e2a\u5c5e\u6027\u7684\u503c\uff0c\u4f60\u5c31\u53ef\u4ee5\u5f97\u5230\u5c4f\u5e55\u7684\u5bbd\u5ea6\u3002<\/p>\n
var screenWidth = window.innerWidth;\n<\/code><\/pre>\n
2. \u5982\u4f55\u5728\u4e0d\u540c\u8bbe\u5907\u4e0a\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\uff1f<\/strong><\/p>\n
\u5728\u4e0d\u540c\u8bbe\u5907\u4e0a\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\u53ef\u80fd\u4f1a\u6709\u6240\u4e0d\u540c\u3002\u5728\u79fb\u52a8\u8bbe\u5907\u4e0a\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528window<\/code>\u5bf9\u8c61\u7684screen<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\u3002\u5177\u4f53\u5730\u8bf4\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528screen.width<\/code>\u5c5e\u6027\u6765\u83b7\u53d6\u5c4f\u5e55\u7684\u5bbd\u5ea6\u3002<\/p>\n
var screenWidth = window.screen.width;\n<\/code><\/pre>\n
\u7136\u800c\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u8bbe\u5907\u7684\u50cf\u7d20\u5bc6\u5ea6\uff08\u5373DPI\uff09\u53ef\u80fd\u4f1a\u5f71\u54cd\u5c4f\u5e55\u5bbd\u5ea6\u7684\u5b9e\u9645\u663e\u793a\u3002\u4e3a\u4e86\u66f4\u52a0\u7cbe\u786e\u5730\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528window<\/code>\u5bf9\u8c61\u7684devicePixelRatio<\/code>\u5c5e\u6027\u5e76\u5c06\u5176\u4e58\u4ee5\u5c4f\u5e55\u7684\u7269\u7406\u5bbd\u5ea6\u3002<\/p>\n
var screenWidth = window.screen.width * window.devicePixelRatio;\n<\/code><\/pre>\n
3. \u5982\u4f55\u5728\u5c4f\u5e55\u5c3a\u5bf8\u53d8\u5316\u65f6\u5b9e\u65f6\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\uff1f<\/strong><\/p>\n
\u5982\u679c\u4f60\u9700\u8981\u5728\u5c4f\u5e55\u5c3a\u5bf8\u53d1\u751f\u53d8\u5316\u65f6\u5b9e\u65f6\u83b7\u53d6\u5c4f\u5e55\u5bbd\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528JavaScript\u7684resize<\/code>\u4e8b\u4ef6\u3002\u901a\u8fc7\u76d1\u542cresize<\/code>\u4e8b\u4ef6\uff0c\u4f60\u53ef\u4ee5\u5728\u7a97\u53e3\u5927\u5c0f\u53d1\u751f\u53d8\u5316\u65f6\u89e6\u53d1\u76f8\u5e94\u7684\u56de\u8c03\u51fd\u6570\uff0c\u5e76\u83b7\u53d6\u6700\u65b0\u7684\u5c4f\u5e55\u5bbd\u5ea6\u3002<\/p>\n
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