jq-demo-阻止冒泡，阻止默认行为

 <!DOCTYPE html>

 <html>

     <head>

         <meta charset="UTF-8">

         <title></title>

     </head>

     <body>

         <div id = "box" style = "width: 200px; height: 200px; background:green;">

             <input type="button" value = "按钮" />

         </div>

         <script src="http://libs.baidu.com/jquery/2.0.0/jquery.min.js"></script>

         <script>

             $(function () {

                 $("body").click(function () {

                     console.log("body");

                 });

                 $("#box").click(function () {

                     console.log("div");

                 });

                 $("input").click(function (e) {

                     console.log("input");

                     e.stopPropagation();//阻止冒泡

                     console.log(e.isPropagationStopped);//true

                     e.preventDefault()//阻止浏览器默认行为

                 })

             })

         </script>

     </body>

 </html>

e.stopPropagation();//阻止冒泡

console.log(e.isPropagationStopped);//true

e.preventDefault()//阻止浏览器默认行为

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jq-demo-阻止冒泡，阻止默认行为

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