JS实现div居中示例_javascript技巧



代码如下:









Sun



window.onload = function() {
// 获取浏览器窗口
var windowScreen = document.documentElement;
// 获取main的div元素
var main_div = document.getElementById("main");
// 通过窗口宽高和div宽高计算位置
var main_left = (windowScreen.clientWidth - main_div.clientWidth)/2 + "px";
var main_top = (windowScreen.clientHeight - main_div.clientHeight)/2 + "px";
// 位置赋值
main_div.style.left = main_left;
main_div.style.top = main_top;

// 获取mcontent的div元素
var content_div = document.getElementById("content");
var content_left = (main_div.clientWidth - content_div.clientWidth)/2 + "px";
var content_top = (main_div.clientHeight - content_div.clientHeight)/2 + "px";
content_div.style.left = content_left;
content_div.style.top = content_top;

}