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用js判断页面是否加载完成实现代码_基础知识

WBOY
WBOY原创
2016-05-16 17:46:471286浏览

用document.onreadystatechange的方法来监听状态改变,
然后用document.readyState == “complete”判断是否加载完成
代码如下

复制代码 代码如下:

document.onreadystatechange = subSomething;//当页面加载状态改变的时候执行这个方法.
function subSomething()
{
if(document.readyState == “complete”) //当页面加载状态
myform.submit(); //表单提交
}

页面加载readyState的五种状态
原文如下:
0: (Uninitialized) the send( ) method has not yet been invoked.
1: (Loading) the send( ) method has been invoked, request in progress.
2: (Loaded) the send( ) method has completed, entire response received.
3: (Interactive) the response is being parsed.
4: (Completed) the response has been parsed, is ready for harvesting.

翻译成中文为:
0 - (未初始化)还没有调用send()方法
1 - (载入)已调用send()方法,正在发送请求
2 - (载入完成)send()方法执行完成,已经接收到全部响应内容
3 - (交互)正在解析响应内容
4 - (完成)响应内容解析完成,可以在客户端调用了
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