web-前端之事件冒泡,其中包括(onmousemove,onmouseover,onmouseout,onmouseleave,onmouseup,onmouseentter)可用于一些计数小游戏
2017-09-27 14:44
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这个是专门写了几个鼠标事件,其中很清晰的描述了每一个鼠标事件的发生和结束,可以很清楚的看见每一种事件的变化
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style> div{ width: 300px; height: 300px; border: 1px solid #000000; float: left; margin: 10px 20px; } div p{ background-color: gray; color: #FFFFFF; text-align: center; height: 50px; line-height: 50px; } </style> <script> var a = 0;//声明 var b = 0; var c = 0; var d = 0; var e = 0; //鼠标移动事件 function myMove(){ a++; // a = a + 1; var font = document.getElementById("a");//获取font标签对象 font.innerHTML = a; } //鼠标移入事件over function myOver(){ b++; var font = document.getElementById("b");//获取font标签对象 font.innerHTML = b; } //鼠标移出事件out function myOut(){ c++; var font = document.getElementById("c");//获取font标签对象 font.innerHTML = c; } //鼠标移入事件enter function myEnter(){ d++; var font = document.getElementById("d");//获取font标签对象 font.innerHTML = d; } //鼠标移出事件leave function myLeave(){ e++; var font = document.getElementById("e");//获取font标签对象 font.innerHTML = e; } </script> </head> <body> <div onmousemove="myMove()"> <font id="a">0</font> <p>鼠标移动事件onmousemove</p> </div> <!--事件冒泡--> <div onmouseover="myOver()"> <font id="b" style="border: 1px solid #000000;">0</font> <p>鼠标移入事件onmouseover</p> </div> <div onmouseout="myOut()"> <font id="c">0</font> <p>鼠标移出事件onmouseout</p> </div> <div onmouseenter="myEnter()"> <font id="d">0</font> <p>鼠标移入事件onmouseenter</p> </div> <div onmouseleave="myLeave()"> <font id="e">0</font> <p>鼠标移出事件onmouseleave</p> </div> </body> </html>
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