{"id":189,"date":"2026-01-25T11:22:00","date_gmt":"2026-01-25T03:22:00","guid":{"rendered":"https:\/\/mitongxue.cn\/?p=189"},"modified":"2026-06-04T11:29:15","modified_gmt":"2026-06-04T03:29:15","slug":"dom-%e4%ba%8b%e4%bb%b6%e7%9a%84%e6%b3%a8%e5%86%8c%e5%92%8c%e7%a7%bb%e9%99%a4","status":"publish","type":"post","link":"https:\/\/mitongxue.cn\/index.php\/2026\/01\/25\/dom-%e4%ba%8b%e4%bb%b6%e7%9a%84%e6%b3%a8%e5%86%8c%e5%92%8c%e7%a7%bb%e9%99%a4\/","title":{"rendered":"DOM \u4e8b\u4ef6\u7684\u6ce8\u518c\u548c\u79fb\u9664"},"content":{"rendered":"\n

DOM<\/em> \u6ce8\u518c\u4e8b\u4ef6<\/h2>\n\n\n\n

\u4f7f\u7528 JavaScript<\/em> \u4e3a DOM<\/em> \u5143\u7d20\u6ce8\u518c\u4e8b\u4ef6\u7684\u65b9\u5f0f\u6709\u591a\u79cd\u3002\u4f46\u662f\u5e76\u4e0d\u662f\u4e00\u5f00\u59cb\u5c31\u8bbe\u8ba1\u4e86\u591a\u79cd\u65b9\u5f0f\uff0c\u800c\u662f\u968f\u7740\u6280\u672f\u7684\u53d1\u5c55\uff0c\u53d1\u5c55\u524d\u4e00\u79cd\u65b9\u5f0f\u6709\u6240\u7f3a\u9677\uff0c\u6240\u4ee5\u8bbe\u8ba1\u4e86\u65b0\u7684 DOM<\/em> \u5143\u7d20\u6ce8\u518c\u4e8b\u4ef6\u7684\u65b9\u5f0f\u3002<\/p>\n\n\n\n

\u8fd9\u91cc\u6211\u4eec\u5c31\u4e00\u8d77\u6765\u603b\u7ed3\u4e00\u4e0b DOM<\/em> \u4e2d\u6ce8\u518c\u4e8b\u4ef6\u7684\u65b9\u5f0f\u6709\u54ea\u4e9b\u3002<\/p>\n\n\n\n

HTML<\/em> \u5143\u7d20\u4e2d\u6ce8\u518c\u4e8b\u4ef6<\/h2>\n\n\n\n

HTML<\/em> \u5143\u7d20\u4e2d\u6ce8\u518c\u7684\u4e8b\u4ef6\uff0c\u53c8\u88ab\u79f0\u4e4b\u4e3a\u884c\u5185\u4e8b\u4ef6\u76d1\u542c\u5668\u3002\u8fd9\u662f\u5728\u6d4f\u89c8\u5668\u4e2d\u5904\u7406\u4e8b\u4ef6\u6700\u539f\u59cb\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n

\u5177\u4f53\u7684\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n\n\n\n

<button onclick=\"test('\u5f20\u4e09')\">\u70b9\u51fb\u6211<\/button><\/code><\/pre>\n\n\n\n
function test(name) {\n \u00a0console.log(`\u6211\u77e5\u9053\u4f60\u5df2\u7ecf\u70b9\u51fb\u4e86\uff0c${name}`);\n}<\/code><\/pre>\n\n\n\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4e3a button<\/em> \u5143\u7d20\u6dfb\u52a0\u4e86 onclick<\/em> \u5c5e\u6027\uff0c\u7136\u540e\u7ed1\u5b9a\u4e86\u4e00\u4e2a\u540d\u4e3a test<\/em> \u7684\u4e8b\u4ef6\u5904\u7406\u5668\u3002<\/p>\n\n\n\n
\u5728 JavaScript<\/em> \u4e2d\u53ea\u9700\u8981\u4e66\u5199\u5bf9\u5e94\u7684 test<\/em> \u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u5373\u53ef\u3002<\/p>\n\n\n\n
\u4f46\u662f\u6709\u4e00\u70b9\u9700\u8981\u6ce8\u610f\uff0c\u5c31\u662f\u8fd9\u79cd\u65b9\u6cd5\u5df2\u7ecf\u8fc7\u65f6\u4e86\uff0c\u539f\u56e0\u5982\u4e0b\uff1a<\/p>\n\n\n\n
    \n
  • JavaScript<\/em> \u4ee3\u7801\u4e0e HTML<\/em> \u6807\u8bb0\u6df7\u6742\u5728\u4e00\u8d77\uff0c\u7834\u574f\u4e86\u7ed3\u6784\u548c\u884c\u4e3a\u5206\u79bb\u7684\u7406\u5ff5\u3002<\/li>\n\n\n\n
  • \u6bcf\u4e2a\u5143\u7d20\u53ea\u80fd\u4e3a\u6bcf\u79cd\u4e8b\u4ef6\u7c7b\u578b\u7ed1\u5b9a\u4e00\u4e2a\u4e8b\u4ef6\u5904\u7406\u5668\u3002<\/li>\n\n\n\n
  • \u4e8b\u4ef6\u5904\u7406\u5668\u7684\u4ee3\u7801\u9690\u85cf\u4e8e\u6807\u8bb0\u4e2d\uff0c\u5f88\u96be\u627e\u5230\u4e8b\u4ef6\u662f\u5728\u54ea\u91cc\u58f0\u660e\u7684\u3002<\/li>\n<\/ul>\n\n\n\n
    \u4f46\u662f\u5982\u679c\u662f\u505a\u7b80\u5355\u7684\u4e8b\u4ef6\u6d4b\u8bd5\uff0c\u90a3\u4e48\u8fd9\u79cd\u5199\u6cd5\u8fd8\u662f\u975e\u5e38\u65b9\u4fbf\u5feb\u6377\u7684\u3002<\/p>\n\n\n\n
    DOM0<\/em> \u7ea7\u65b9\u5f0f\u6ce8\u518c\u4e8b\u4ef6<\/h3>\n\n\n\n
    \u8fd9\u79cd\u65b9\u5f0f\u662f\u9996\u5148\u53d6\u5230\u8981\u4e3a\u5176\u7ed1\u5b9a\u4e8b\u4ef6\u7684\u5143\u7d20\u8282\u70b9\u5bf9\u8c61\uff0c\u7136\u540e\u7ed9\u8fd9\u4e9b\u8282\u70b9\u5bf9\u8c61\u7684\u4e8b\u4ef6\u5904\u7406\u5c5e\u6027\u8d4b\u503c\u4e00\u4e2a\u51fd\u6570\u3002<\/p>\n\n\n\n
    \u8fd9\u6837\u5c31\u53ef\u4ee5\u8fbe\u5230 JavaScript<\/em> \u4ee3\u7801\u548c HTML<\/em> \u4ee3\u7801\u76f8\u5206\u79bb\u7684\u76ee\u7684\u3002<\/p>\n\n\n\n
    \u5177\u4f53\u7684\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n\n\n\n
    <button id=\"test\">\u70b9\u51fb\u6211<\/button><\/code><\/pre>\n\n\n\n
    var test = document.getElementById(\"test\");
    test.onclick = function(){
      console.log(\"this is a test\");
    }<\/code><\/pre>\n\n\n\n
    \u8fd9\u79cd\u65b9\u5f0f\u867d\u7136\u76f8\u6bd4 HTML<\/em> \u5143\u7d20\u4e2d\u6ce8\u518c\u4e8b\u4ef6\u6709\u6240\u6539\u8fdb\uff0c\u4f46\u662f\u5b83\u4e5f\u6709\u4e00\u4e2a\u7f3a\u70b9\uff0c\u90a3\u5c31\u662f\u5b83\u4f9d\u7136\u5b58\u5728\u6bcf\u4e2a\u5143\u7d20\u53ea\u80fd\u7ed1\u5b9a\u4e00\u4e2a\u51fd\u6570\u7684\u5c40\u9650\u6027\u3002<\/p>\n\n\n\n
    \u4e0b\u9762\u6211\u4eec\u5c1d\u8bd5\u4f7f\u7528\u8fd9\u79cd\u65b9\u5f0f\u4e3a\u540c\u4e00\u4e2a\u5143\u7d20\u8282\u70b9\u7ed1\u5b9a 2<\/em> \u4e2a\u4e8b\u4ef6\uff0c\u5982\u4e0b\uff1a<\/p>\n\n\n\n
    var test = document.getElementById(\"test\");
    test.onclick = function(){
      console.log(\"this is a test\");
    }
    test.onclick = function(){
      console.log(\"this is a test,too\");
    }<\/code><\/pre>\n\n\n\n
    \u5f53\u6211\u4eec\u4e3a\u8be5 DOM<\/em> \u5143\u7d20\u7ed1\u5b9a 2<\/em> \u4e2a\u76f8\u540c\u7c7b\u578b\u7684\u4e8b\u4ef6\u65f6\uff0c\u540e\u9762\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u5c31\u4f1a\u628a\u524d\u9762\u7684\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u7ed9\u8986\u76d6\u6389\u3002<\/p>\n\n\n\n
    DOM2<\/em> \u7ea7\u65b9\u5f0f\u6ce8\u518c\u4e8b\u4ef6<\/h3>\n\n\n\n
    DOM2<\/em> \u7ea7\u518d\u6b21\u5bf9\u4e8b\u4ef6\u7684\u7ed1\u5b9a\u65b9\u5f0f\u8fdb\u884c\u4e86\u6539\u8fdb\u3002<\/p>\n\n\n\n
    DOM2<\/em> \u7ea7\u901a\u8fc7 addEventListener<\/em> \u65b9\u6cd5\u6765\u4e3a\u4e00\u4e2a DOM<\/em> \u5143\u7d20\u6dfb\u52a0\u591a\u4e2a\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u3002<\/p>\n\n\n\n
    \u8be5\u65b9\u6cd5\u63a5\u6536 3<\/em> \u4e2a\u53c2\u6570\uff1a\u4e8b\u4ef6\u540d\u3001\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u3001\u5e03\u5c14\u503c\u3002<\/p>\n\n\n\n
    \u5982\u679c\u8fd9\u4e2a\u5e03\u5c14\u503c\u4e3a true<\/em>\uff0c\u5219\u5728\u6355\u83b7\u9636\u6bb5\u5904\u7406\u4e8b\u4ef6\uff0c\u5982\u679c\u4e3a false<\/em>\uff0c\u5219\u5728\u5192\u6ce1\u9636\u6bb5\u5904\u7406\u4e8b\u4ef6\u3002\u82e5\u6700\u540e\u7684\u5e03\u5c14\u503c\u4e0d\u586b\u5199\uff0c\u5219\u548c false<\/em> \u6548\u679c\u4e00\u6837\uff0c\u4e5f\u5c31\u662f\u8bf4\u9ed8\u8ba4\u4e3a false<\/em>\uff0c\u5728\u5192\u6ce1\u9636\u6bb5\u8fdb\u884c\u4e8b\u4ef6\u7684\u5904\u7406\u3002<\/p>\n\n\n\n
    \u63a5\u4e0b\u6765\u6211\u4eec\u6765\u770b\u4e0b\u9762\u7684\u793a\u4f8b\uff1a\u8fd9\u91cc\u6211\u4eec\u4e3a button<\/em> \u5143\u7d20\u7ed1\u5b9a\u4e86 2<\/em> \u4e2a\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\uff0c\u5e76\u4e14 2<\/em> \u4e2a\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u90fd\u662f\u901a\u8fc7\u70b9\u51fb\u6765\u89e6\u53d1\u3002<\/p>\n\n\n\n
    var test = document.getElementById(\"test\");
    test.addEventListener(\"click\", function () {
      console.log(\"this is a test\");
    }, false);
    test.addEventListener(\"click\", function () {
      console.log(\"this is a test,too\");
    }, false);<\/code><\/pre>\n\n\n\n
    \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7 addEventListener<\/em> \u4e3a\u6309\u94ae\u7ed1\u5b9a\u4e86 2<\/em> \u4e2a\u70b9\u51fb\u7684\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\uff0c2<\/em> \u4e2a\u4e8b\u4ef6\u5904\u7406\u7a0b\u5e8f\u90fd\u4f1a\u6267\u884c\u3002<\/p>\n\n\n\n
    \u53e6\u5916\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728 IE<\/em> \u4e2d\u548c addEventListener<\/em> \u65b9\u6cd5\u4e0e\u4e4b\u5bf9\u5e94\u7684\u662f attachEvent<\/em> \u65b9\u6cd5\u3002<\/p>\n\n\n\n
    DOM<\/em> \u79fb\u9664\u4e8b\u4ef6<\/h2>\n\n\n\n
    \u901a\u8fc7 DOM0<\/em> \u7ea7\u6765\u6dfb\u52a0\u7684\u4e8b\u4ef6\uff0c\u5220\u9664\u7684\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5c06 DOM<\/em> \u5143\u7d20\u7684\u4e8b\u4ef6\u5904\u7406\u5c5e\u6027\u8d4b\u503c\u4e3a null<\/em> \u5373\u53ef\u3002<\/p>\n\n\n\n
    \u4f8b\u5982\uff1a<\/p>\n\n\n\n
    var test = document.getElementById(\"test\");
    test.onclick = function(){
      console.log(\"this is a test\");
      test.onclick = null;
    }<\/code><\/pre>\n\n\n\n
    \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7 DOM0<\/em> \u7ea7\u7684\u65b9\u5f0f\u4e3a button<\/em> \u6309\u94ae\u7ed1\u5b9a\u4e86\u70b9\u51fb\u4e8b\u4ef6\uff0c\u4f46\u662f\u5728\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u4e2d\u53c8\u79fb\u9664\u4e86\u8be5\u4e8b\u4ef6\u3002\u6240\u4ee5\u8be5\u4e8b\u4ef6\u53ea\u4f1a\u751f\u6548\u4e00\u6b21\u3002<\/p>\n\n\n\n
    \u5982\u679c\u662f\u901a\u8fc7 DOM2<\/em> \u7ea7\u6765\u6dfb\u52a0\u7684\u4e8b\u4ef6\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 removeEventLister<\/em> \u65b9\u6cd5\u6765\u8fdb\u884c\u4e8b\u4ef6\u7684\u5220\u9664\u3002<\/p>\n\n\n\n
    \u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5982\u679c\u8981\u901a\u8fc7\u8be5\u65b9\u6cd5\u79fb\u9664\u67d0\u4e00\u7c7b\u4e8b\u4ef6\u7c7b\u578b\u7684\u4e00\u4e2a\u4e8b\u4ef6<\/strong>\u7684\u8bdd\uff0c\u5728\u901a\u8fc7 addEventListener<\/em> \u6765\u7ed1\u5b9a\u4e8b\u4ef6\u65f6\u7684\u5199\u6cd5\u5c31\u8981\u7a0d\u4f5c\u6539\u53d8\u3002<\/p>\n\n\n\n
    \u5148\u5355\u72ec\u5c06\u7ed1\u5b9a\u51fd\u6570\u5199\u597d\uff0c\u7136\u540e addEventListener<\/em> \u8fdb\u884c\u7ed1\u5b9a\u65f6\u7b2c 2<\/em> \u4e2a\u53c2\u6570\u4f20\u5165\u8981\u7ed1\u5b9a\u7684\u51fd\u6570\u540d\u5373\u53ef\u3002<\/p>\n\n\n\n
    \u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n\n\n\n
    var test = document.getElementById(\"test\");
    \/\/DOM 2\u7ea7\u6dfb\u52a0\u4e8b\u4ef6
    function fn1() {
      console.log(\"this is a test\");
      test.removeEventListener(\"click\", fn1); \/\/ \u53ea\u5220\u9664\u7b2c\u4e00\u4e2a\u70b9\u51fb\u4e8b\u4ef6
    }
    function fn2() {
      console.log(\"this is a test,too\");
    }
    test.addEventListener(\"click\", fn1, false);
    test.addEventListener(\"click\", fn2, false);<\/code><\/pre>\n\n\n\n
    \u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0c\u6211\u4eec\u4e3a button<\/em> \u5143\u7d20\u7ed1\u5b9a\u4e86\u4e24\u4e2a click<\/em> \u4e8b\u4ef6\uff0c\u4e4b\u540e\u5728\u7b2c\u4e00\u4e2a\u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u4e2d\uff0c\u5bf9 fn1<\/em> \u4e8b\u4ef6\u5904\u7406\u51fd\u6570\u8fdb\u884c\u4e86\u79fb\u9664\u3002\u6240\u4ee5\u7b2c\u4e00\u6b21\u70b9\u51fb\u65f6\uff0cfn1<\/em> \u548c fn2<\/em> \u90fd\u4f1a\u8d77\u4f5c\u7528\uff0c\u4e4b\u540e\u56e0\u4e3a fn1<\/em> \u88ab\u79fb\u9664\uff0c\u6240\u4ee5\u53ea\u4f1a fn2<\/em> \u6709\u4f5c\u7528\u3002<\/p>\n\n\n\n
    <\/p>\n","protected":false},"excerpt":{"rendered":"
    DOM \u6ce8\u518c\u4e8b\u4ef6 \u4f7f\u7528 JavaScript \u4e3a ..<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17,16,11],"tags":[],"class_list":["post-189","post","type-post","status-publish","format-standard","hentry","category-css","category-js","category-front"],"featured_image_urls":{"full":"","thumbnail":"","medium":"","medium_large":"","large":"","1536x1536":"","2048x2048":""},"author_info":{"info":["\u9648 \u67d0\u4eba"]},"category_info":"CSS<\/a> JS<\/a> \u524d\u7aef<\/a>","tag_info":"\u524d\u7aef","comment_count":"0","_links":{"self":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/189","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/comments?post=189"}],"version-history":[{"count":1,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/189\/revisions"}],"predecessor-version":[{"id":190,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/posts\/189\/revisions\/190"}],"wp:attachment":[{"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/media?parent=189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/categories?post=189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mitongxue.cn\/index.php\/wp-json\/wp\/v2\/tags?post=189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}