使用JS实现可移动的Div
这是老师上课要求做的,使用JS实现div的移动,其实就是获取鼠标和div的位置,然后进行修改,代码如下。想要试用一下的效果的,可以看最下面,我把HTML代码直接放到md文档中,应该可以直接编译。
直接放到md中,整个页面就乱了,我还是新开一个页,想调试的可以戳这里www.rain1024.com-js75.html
下面是代码
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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <script type="text/javascript"> var oldLeft,oldMouseLeft; var oldRight,oldMouseRight; var isDown=false; function mousedown(e){ oldLeft=document.getElementById('div1').style.left; oldMouseLeft= e.clientX; oldRight=document.getElementById('div1').style.top; oldMouseRight= e.clientY; isDown = true; } function mousemove(e){ if(isDown){ var newMouseLeft= e.clientX; var newLeft=parseInt(oldLeft)+parseInt(newMouseLeft)-parseInt(oldMouseLeft)+"px"; var newMouseRight= e.clientY; var newRight=parseInt(oldRight)+parseInt(newMouseRight)-parseInt(oldMouseRight)+"px"; document.getElementById('div1').style.left=newLeft; document.getElementById('div1').style.top=newRight; } } function mouseup(){ isDown=false; } </script></head> <body> <div id="div1" style="background-color: blue;position: absolute;left: 100px;top: 100px;width: 100px;height: 100px" onmousedown="mousedown(event)" onmousemove="mousemove(event)" onmouseup="mouseup()"> </div> <!--onmousedown="getXY(event);"--> </body> </html> |