怎么判断js脚本加载是否完成
JS加载完成,页面加载的五种状态
操作方法
- 01
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: 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 }
- 02
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.
- 03
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