今天写页面时，发现chrome上使用window.close方法有时不能关闭页面。
搜索google时从这里 发现下面一段文字：
When this method (window.close) is called, the referenced window is closed.
This method is only allowed to be called for windows that were opened by a script using the window.open method. If the window was not opened by a script, the following error appears in the JavaScript Console: Scripts may not close windows that were not opened by script.
意思是 window.close 关闭的是 window.open 方法打开的页面(默认关闭当前页面)。
所以最好用下面函数关闭窗口：
function closeWin(){
window.open('','_self').close();
}
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从StackOverFlow上看到一个人才给出的方法：
In the body tag:
<body onload="window.open('','_self','');">
To close the window:
<a href="javascript: window.close();">