Posted in Javascript onJuly 19, 2017
本文实例讲述了纯js实现的积木(div层)拖动功能。分享给大家供大家参考，具体如下：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>拖动</title>
<style type="text/css">
</style>
</head>
<body id="content">
<input type="button" value="获取积木" id="div3"/>
</body>
<script>
//生成积木
document.getElementById("div3").onclick=function(){
var num = getnumber();
var num1 = getnumber();
var num2 = getnumber();
var num3 = getnumber();
var divs = '<div id="s'+num+'"style="width: 200px;height: 200px;position: absolute;background:rgb('+num1+','+num2+','+num3+')"></div>'
document.getElementById("content").insertAdjacentHTML("beforeEnd",divs);
darg1("s"+num+"");
};
//h获取随机数，获取随机颜色
function getnumber(){
return parseInt(Math.random()*255);
}
//拖动积木
function darg1(id){
var obj = document.getElementById(id);
var objx = 0;
var objy = 0;
obj.onmousedown = function(even){
//鼠标到div的距离
objx = even.clientX - obj.offsetLeft;
objy = even.clientY - obj.offsetTop;
//div移动的距离 = 鼠标到父窗口的距离 - 鼠标到div的距离
document.onmousemove = function(even){
obj.style.left = even.pageX-objx+'px';
obj.style.top = even.pageY-objy+'px';
};
document.onmouseup = function(){
document.onmousemove = null;
document.onmouseup = null;
};
};
return false;
}
</script>
<html>
点击button按钮，获取积木,获取积木后可以在浏览器内随意拖动生成的积木:
希望本文所述对大家JavaScript程序设计有所帮助。
纯js实现的积木(div层)拖动功能示例
- Author -
caozong声明：登载此文出于传递更多信息之目的，并不意味着赞同其观点或证实其描述。
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