<!DOCTYPE html> <html lang="en" dir="ltr"> <head> <meta charset="utf-8"> <title></title> </head> <body> <p id = "pragraph one" title="i love you"> i love you </p> <p> i am a boy </p> <ul id = "purchases"> <li>book</li> <li class = "sale">video</li> <li class = "sale important good love">photo</li> </ul> <ul id = "testcount" title = "list"> <li>1</li> <li>2</li> <li>3</li> </ul> <a href="https://www.baidu.com/" class ="popup"> 百度一下</a> <!-- onclick = 'return false' ,点击后不跳转了 --> <script type="text/javascript"> var addLoadEvent = function(func) { var oldonload = window.onload; //将已有的保存,如果已有 if (typeof window.onload !== 'function' ) { window.onload = func; } else { window.onload = function(){ oldonload(); func(); } } } addLoadEvent(prepareLinks); function prepareLinks() { //BUG 此处表达成var prepareLinks = function(){ , 则函数无效,到这就不运行了 if(!document.getElementsByTagName) return false; var links =document.getElementsByTagName('a'); for (var i = 0; i < links.length; i++) { if (links[i].getAttribute('class') == 'popup') { //包含了 对 'popup' 是否存在的判断 links[i].onclick = function(){ return popUp(this.getAttribute("href")) ? false : true; //return !popUp(this.getAttribute("href")); } } } } var popUp = function(winURL) { window.open(winURL,"popup","resizable,scrollbars,status"); return true; } //用语句为代码查错 将console.log('') 插入到 你觉得可能出错的那一行 看控制台是否能正常打印出 //document.getElementsByTagName('a')[0].innerText = 'baiduyixia' </script> </body> </html>
点击网页上的 ‘百度一下’ ,在本页面弹出一个 百度导航 的窗口(且窗口的一些属性能控制);
常用于电商网站,点击链接 弹出 结算页面;而不会离开原来的页面。