{"id":169417,"date":"2024-05-08T16:45:30","date_gmt":"2024-05-08T08:45:30","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/169417.html"},"modified":"2024-05-08T16:45:43","modified_gmt":"2024-05-08T08:45:43","slug":"javascript-%e5%a6%82%e4%bd%95%e7%9b%91%e5%90%ac-div-%e5%ae%bd%e9%ab%98%e6%94%b9%e5%8f%98","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/169417.html","title":{"rendered":"javascript \u5982\u4f55\u76d1\u542c div \u5bbd\u9ad8\u6539\u53d8"},"content":{"rendered":"

\"javascript<\/p>\n

\u5728JavaScript\u4e2d\uff0c\u76d1\u542cdiv<\/code>\u5bbd\u9ad8\u7684\u6539\u53d8\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5176\u4e2d\u5305\u62ec\u4f7f\u7528ResizeObserver<\/code>\u3001MutationObserver<\/code>\u4e0e\u76d1\u542c\u7a97\u53e3resize<\/code>\u4e8b\u4ef6<\/strong>\u3002\u8fd9\u4e9b\u65b9\u6cd5\u63d0\u4f9b\u4e86\u4e0d\u540c\u7684\u4f18\u52bf\uff0c\u5e76\u53ef\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u573a\u666f\u8fdb\u884c\u9009\u62e9\u3002\u6211\u4eec\u5c06\u91cd\u70b9\u8bb2\u89e3\u4f7f\u7528ResizeObserver<\/code>\u8fd9\u4e00\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u63d0\u4f9b\u4e86\u4e00\u79cd\u9ad8\u6548\u4e14\u76f4\u63a5\u7684\u65b9\u5f0f\u6765\u76d1\u542c\u5143\u7d20\u7684\u5c3a\u5bf8\u53d8\u5316\u3002<\/p>\n<\/p>\n

\u4e00\u3001RESIZEOBSERVER – \u76f4\u63a5\u76d1\u542c\u5143\u7d20<\/h3>\n<\/p>\n

ResizeObserver<\/code>\u662f\u4e00\u4e2a\u7528\u4e8e\u76d1\u542cHTMLElements\u5c3a\u5bf8\u53d8\u5316\u7684API\u3002\u521b\u5efa\u4e00\u4e2aResizeObserver<\/code>\u5b9e\u4f8b\uff0c\u5e76\u5c06\u4e00\u4e2a\u56de\u8c03\u51fd\u6570\u4f5c\u4e3a\u53c2\u6570\u4f20\u5165\uff0c\u8fd9\u4e2a\u56de\u8c03\u51fd\u6570\u4f1a\u5728\u88ab\u89c2\u5bdf\u5143\u7d20\u7684\u5c3a\u5bf8\u53d8\u5316\u65f6\u88ab\u8c03\u7528\u3002<\/p>\n<\/p>\n

\u4f7f\u7528ResizeObserver<\/code>\u7684\u6b65\u9aa4\u5305\u62ec\uff1a\u521d\u59cb\u5316ResizeObserver<\/code>\u5b9e\u4f8b\u3001\u6307\u5b9a\u56de\u8c03\u51fd\u6570\u4ee5\u53ca\u5c06\u6240\u9700\u76d1\u542c\u7684\u5143\u7d20\u4e0eobserver\u5173\u8054\u8d77\u6765\u3002<\/strong> \u8fd9\u79cd\u65b9\u6cd5\u7684\u4e3b\u8981\u4f18\u52bf\u662f\u5b83\u80fd\u591f\u76f4\u63a5\u5bf9\u7279\u5b9a\u5143\u7d20\u7684\u5927\u5c0f\u53d8\u5316\u8fdb\u884c\u76d1\u542c\uff0c\u4e0d\u4f9d\u8d56\u4e8e\u5168\u5c40\u7684\u7a97\u53e3\u53d8\u5316\uff0c\u56e0\u6b64\u5728\u5904\u7406\u5c40\u90e8UI\u7ec4\u4ef6\u65f6\u7279\u522b\u6709\u7528\u3002<\/p>\n<\/p>\n

\u521b\u5efaResizeObserver<\/code>\u5b9e\u4f8b\u5e76\u8fdb\u884c\u76d1\u542c\u7684\u4ee3\u7801\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n

\/\/ \u521d\u59cb\u5316ResizeObserver\u5b9e\u4f8b\u5e76\u4f20\u5165\u56de\u8c03\u51fd\u6570<\/p>\n
let resizeObserver = new ResizeObserver(entries => {<\/p>\n
  for (let entry of entries) {<\/p>\n
    \/\/ \u5904\u7406\u6bcf\u4e00\u4e2a\u88ab\u89c2\u5bdf\u5143\u7d20\u7684\u5c3a\u5bf8\u53d8\u5316<\/p>\n
    console.log('Element:', entry.target);<\/p>\n
    console.log(`Element's new width: ${entry.contentRect.width}`);<\/p>\n
    console.log(`Element's new height: ${entry.contentRect.height}`);<\/p>\n
  }<\/p>\n
});<\/p>\n
\/\/ \u9009\u62e9\u9700\u8981\u76d1\u542c\u7684\u5143\u7d20<\/p>\n
let div = document.querySelector('div');<\/p>\n
\/\/ \u5c06observer\u4e0e\u76ee\u6807\u5143\u7d20\u5173\u8054\u8d77\u6765<\/p>\n
resizeObserver.observe(div);<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001MUTATIONOBSERVER – \u76d1\u542cDOM\u53d8\u66f4<\/h3>\n<\/p>\n
\u867d\u7136MutationObserver<\/code>\u4e3b\u8981\u7528\u4e8e\u76d1\u542cDOM\u6811\u7684\u53d8\u5316\uff08\u5982\u8282\u70b9\u7684\u589e\u52a0\u3001\u5220\u9664\u6216\u5c5e\u6027\u7684\u53d8\u66f4\uff09\uff0c\u5b83\u4e5f\u53ef\u95f4\u63a5\u7528\u4e8e\u76d1\u542cdiv<\/code>\u7684\u5bbd\u9ad8\u6539\u53d8\uff0c\u7279\u522b\u662f\u5f53\u5c3a\u5bf8\u53d8\u5316\u662f\u7531\u4e8eDOM\u53d8\u5316\u5f15\u8d77\u7684\u3002<\/p>\n<\/p>\n
\u8981\u901a\u8fc7MutationObserver<\/code>\u76d1\u542c\u5bbd\u9ad8\u53d8\u5316\uff0c\u9700\u8981\u914d\u7f6e\u76d1\u542c\u5c5e\u6027\u53d8\u5316\uff0c\u5e76\u4e14\u9002\u7528\u573a\u666f\u662f\u5c3a\u5bf8\u53d8\u5316\u4e0e\u7279\u5b9aDOM\u5c5e\u6027\uff08\u5982style<\/code>\uff09\u7684\u53d8\u5316\u76f8\u5173\u8054\u3002<\/strong><\/p>\n<\/p>\n
\u914d\u7f6eMutationObserver<\/code>\u548c\u89c2\u5bdf\u5bbd\u9ad8\u53d8\u5316\u76f8\u5173\u7684\u4ee3\u7801\u5927\u81f4\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
\/\/ \u521d\u59cb\u5316MutationObserver\u5b9e\u4f8b\u5e76\u4f20\u5165\u56de\u8c03\u51fd\u6570<\/p>\n
let mutationObserver = new MutationObserver(mutations => {<\/p>\n
  mutations.forEach(mutation => {<\/p>\n
    if (mutation.type === 'attributes' && mutation.attributeName === 'style') {<\/p>\n
      console.log('Style attribute changed');<\/p>\n
      let target = mutation.target;<\/p>\n
      console.log(`New width: ${target.style.width}, New height: ${target.style.height}`);<\/p>\n
    }<\/p>\n
  });<\/p>\n
});<\/p>\n
\/\/ \u9009\u62e9\u9700\u8981\u76d1\u542c\u7684\u5143\u7d20<\/p>\n
let div = document.querySelector('div');<\/p>\n
\/\/ \u914d\u7f6eobserver\u9009\u9879<\/p>\n
let config = {<\/p>\n
  attributes: true, \/\/ \u76d1\u542c\u5c5e\u6027\u7684\u53d8\u5316<\/p>\n
  attributeFilter: ['style'] \/\/ \u4ec5\u76d1\u542cstyle\u5c5e\u6027\u7684\u53d8\u5316<\/p>\n
};<\/p>\n
\/\/ \u542f\u52a8\u76d1\u542c<\/p>\n
mutationObserver.observe(div, config);<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u76d1\u542cWINDOW RESIZE \u4e8b\u4ef6<\/h3>\n<\/p>\n
\u5bf9\u4e8e\u90a3\u4e9b\u95f4\u63a5\u5bfc\u81f4div<\/code>\u5bbd\u9ad8\u6539\u53d8\u7684\u573a\u666f\uff0c\u6bd4\u5982\u6d4f\u89c8\u5668\u7a97\u53e3\u5927\u5c0f\u7684\u8c03\u6574\uff0c\u53ef\u4ee5\u76d1\u542cwindow<\/code>\u7684resize<\/code>\u4e8b\u4ef6\u6765\u5b9e\u73b0\u95f4\u63a5\u76d1\u6d4b\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u5f53div<\/code>\u5c3a\u5bf8\u7684\u53d8\u5316\u662f\u54cd\u5e94\u5168\u5c40\u73af\u5883\u53d8\u5316\u65f6\u3002<\/p>\n<\/p>\n
\u76d1\u542c\u7a97\u53e3resize<\/code>\u4e8b\u4ef6\u4e0e\u68c0\u67e5\u7279\u5b9a\u5143\u7d20\u7684\u5bbd\u9ad8\u53d8\u5316\u53ef\u4ee5\u8054\u5408\u4f7f\u7528\uff0c\u4ee5\u5bf9\u7a97\u53e3\u5927\u5c0f\u7684\u53d8\u5316\u505a\u51fa\u54cd\u5e94\u3002<\/strong><\/p>\n<\/p>\n
\u5173\u4e8e\u5982\u4f55\u5b9e\u73b0\u7684\u4ee3\u7801\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
window.addEventListener('resize', () => {<\/p>\n
  let div = document.querySelector('div');<\/p>\n
  console.log(`Resized div's width: ${div.offsetWidth}`);<\/p>\n
  console.log(`Resized div's height: ${div.offsetHeight}`);<\/p>\n
});<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u7ed3\u5408\u4f7f\u7528\u65b9\u6cd5<\/h3>\n<\/p>\n
\u867d\u7136\u4e0a\u8ff0\u4e09\u79cd\u65b9\u6cd5\u5404\u6709\u7279\u70b9\u548c\u9002\u7528\u573a\u666f\uff0c\u4f46\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d\u901a\u5e38\u9700\u8981\u6839\u636e\u5e94\u7528\u7684\u5177\u4f53\u8981\u6c42\u6765\u9009\u62e9\u6700\u5408\u9002\u7684\u76d1\u542c\u65b9\u6cd5\uff0c\u6709\u65f6\u5019\u4e5f\u4f1a\u7ed3\u5408\u4f7f\u7528\u8fd9\u51e0\u79cd\u65b9\u6cd5\uff0c\u4ee5\u8fbe\u5230\u6700\u4f73\u7684\u76d1\u542c\u6548\u679c\u548c\u6027\u80fd\u8868\u73b0\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u9996\u5148\u4f7f\u7528ResizeObserver<\/code>\u6765\u76d1\u6d4b\u76ee\u6807\u5143\u7d20\u7684\u5c3a\u5bf8\u53d8\u5316\uff0c\u540c\u65f6\u76d1\u542c\u7a97\u53e3\u7684resize<\/code>\u4e8b\u4ef6\u6765\u5904\u7406\u90a3\u4e9b\u7531\u4e8e\u5168\u5c40\u73af\u5883\u53d8\u5316\u800c\u95f4\u63a5\u5f71\u54cd\u5143\u7d20\u5c3a\u5bf8\u7684\u60c5\u51b5\u3002\u5982\u6b64\u4e00\u6765\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u7cbe\u786e\u5730\u83b7\u53d6\u5143\u7d20\u5c3a\u5bf8\u7684\u53d8\u5316\uff0c\u8fd8\u53ef\u4ee5\u9884\u9632\u7531\u4e8e\u5916\u90e8\u56e0\u7d20\u5f15\u8d77\u7684\u53d8\u5316\uff0c\u786e\u4fdd\u5e94\u7528\u754c\u9762\u7684\u6b63\u786e\u6027\u548c\u7528\u6237\u4f53\u9a8c\u3002<\/p>\n<\/p>\n
\u7efc\u4e0a\uff0c\u867d\u7136JavaScript\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u5f0f\u6765\u76d1\u542cdiv<\/code>\u5bbd\u9ad8\u7684\u6539\u53d8\uff0c\u4f46\u9009\u62e9\u6700\u5408\u9002\u7684\u65b9\u6cd5\u9700\u8981\u8003\u8651\u5230\u5177\u4f53\u573a\u666f\u3001\u6027\u80fd\u8981\u6c42\u4ee5\u53ca\u517c\u5bb9\u6027\u95ee\u9898<\/strong>\u3002ResizeObserver<\/code>\u7531\u4e8e\u5176\u76f4\u63a5\u548c\u9ad8\u6548\u7684\u7279\u6027\u6210\u4e3a\u4e86\u9996\u9009\u65b9\u6cd5\uff0c\u4f46\u5728\u7279\u5b9a\u60c5\u51b5\u4e0b\u7ed3\u5408\u4f7f\u7528\u5176\u4ed6\u65b9\u6cd5\u4e5f\u80fd\u8fbe\u5230\u4f18\u826f\u7684\u6548\u679c\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
\u5982\u4f55\u5728 JavaScript \u4e2d\u76d1\u542c div \u5143\u7d20\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u6539\u53d8\uff1f<\/strong><\/p>\n
    \n
  1. \u5982\u4f55\u4f7f\u7528 JavaScript \u76d1\u542c div \u5143\u7d20\u7684\u5bbd\u5ea6\u6539\u53d8\uff1f<\/strong><\/li>\n<\/ol>\n
    \u8981\u76d1\u542c div \u5143\u7d20\u7684\u5bbd\u5ea6\u6539\u53d8\uff0c\u53ef\u4ee5\u4f7f\u7528 ResizeObserver<\/code> \u5bf9\u8c61\u3002\u9996\u5148\uff0c\u901a\u8fc7 querySelector<\/code> \u6216 getElementById<\/code> \u65b9\u6cd5\u83b7\u53d6\u5230\u76ee\u6807 div \u5143\u7d20\u3002\u7136\u540e\uff0c\u521b\u5efa\u4e00\u4e2a\u65b0\u7684 ResizeObserver<\/code> \u5bf9\u8c61\uff0c\u5e76\u4f7f\u7528 observe<\/code> \u65b9\u6cd5\u5c06\u76ee\u6807\u5143\u7d20\u4f20\u9012\u8fdb\u53bb\u3002\u6700\u540e\uff0c\u5728\u56de\u8c03\u51fd\u6570\u4e2d\u5904\u7406\u5bbd\u5ea6\u6539\u53d8\u7684\u4e8b\u4ef6\u3002\u8fd9\u6837\uff0c\u5f53\u76ee\u6807 div \u5143\u7d20\u7684\u5bbd\u5ea6\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u56de\u8c03\u51fd\u6570\u5c31\u4f1a\u88ab\u89e6\u53d1\u3002<\/p>\n
      \n
    1. \u5982\u4f55\u4f7f\u7528 JavaScript \u76d1\u542c div \u5143\u7d20\u7684\u9ad8\u5ea6\u6539\u53d8\uff1f<\/strong><\/li>\n<\/ol>\n
      \u8981\u76d1\u542c div \u5143\u7d20\u7684\u9ad8\u5ea6\u6539\u53d8\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e0e\u76d1\u542c\u5bbd\u5ea6\u6539\u53d8\u76f8\u540c\u7684\u65b9\u6cd5\u3002\u53ea\u9700\u8981\u5728\u524d\u9762\u63d0\u5230\u7684\u4ee3\u7801\u4e2d\u5c06\u5bbd\u5ea6\u6539\u4e3a\u9ad8\u5ea6\u5373\u53ef\u3002\u901a\u8fc7\u76d1\u542c div \u5143\u7d20\u7684\u9ad8\u5ea6\u6539\u53d8\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u5143\u7d20\u9ad8\u5ea6\u53d8\u5316\u7684\u5b9e\u65f6\u76d1\u6d4b\u548c\u5904\u7406\u3002<\/p>\n
        \n
      1. \u5982\u4f55\u5728 JavaScript \u4e2d\u540c\u65f6\u76d1\u542c div \u5143\u7d20\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u6539\u53d8\uff1f<\/strong><\/li>\n<\/ol>\n
        \u8981\u540c\u65f6\u76d1\u542c div \u5143\u7d20\u7684\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u6539\u53d8\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e24\u4e2a\u72ec\u7acb\u7684 ResizeObserver<\/code> \u5bf9\u8c61\uff0c\u4e00\u4e2a\u7528\u4e8e\u76d1\u542c\u5bbd\u5ea6\u6539\u53d8\uff0c\u53e6\u4e00\u4e2a\u7528\u4e8e\u76d1\u542c\u9ad8\u5ea6\u6539\u53d8\u3002\u5206\u522b\u521b\u5efa\u4e24\u4e2a ResizeObserver<\/code> \u5bf9\u8c61\uff0c\u5e76\u5206\u522b\u5c06\u76ee\u6807\u5143\u7d20\u4f20\u9012\u7ed9\u5404\u81ea\u7684\u5bf9\u8c61\u7684 observe<\/code> \u65b9\u6cd5\u3002\u7136\u540e\uff0c\u901a\u8fc7\u4e24\u4e2a\u4e0d\u540c\u7684\u56de\u8c03\u51fd\u6570\u5206\u522b\u5904\u7406\u5bbd\u5ea6\u548c\u9ad8\u5ea6\u7684\u6539\u53d8\u4e8b\u4ef6\u3002\u8fd9\u6837\uff0c\u5f53\u76ee\u6807 div \u5143\u7d20\u7684\u5bbd\u5ea6\u6216\u9ad8\u5ea6\u53d1\u751f\u53d8\u5316\u65f6\uff0c\u5bf9\u5e94\u7684\u56de\u8c03\u51fd\u6570\u5c31\u4f1a\u88ab\u89e6\u53d1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728JavaScript\u4e2d\uff0c\u76d1\u542cdiv\u5bbd\u9ad8\u7684\u6539\u53d8\u53ef\u4ee5\u901a\u8fc7\u51e0\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5176\u4e2d\u5305\u62ec\u4f7f\u7528ResizeObserver\u3001 […]","protected":false},"author":3,"featured_media":169435,"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\/169417"}],"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=169417"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/169417\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/169435"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=169417"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=169417"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=169417"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}