无法获取window.open（）的innerHTML
[英]Cannot get the innerHTML of a window.open()
问题描述
HI I have some troubles when reading the text inside a window that I open with window.open() I hope you guys can help me, what I need is my parent window will read the <div> html value of my child window that the parent window called, I have this code but It doesn't works 
嗨，我在用window.open()打开的窗口中阅读文本时遇到了一些麻烦，希望你们能为我提供帮助，我需要的是父窗口将读取子窗口的<div> html值，父窗口调用，我有此代码，但它不起作用
Parent Window 父窗口
<button onclick="buttonset()">Click me</button>
<script>
var myWindow ;
function buttonset () {
myWindow = window.open("pag1.html", "myWindow", "width=200,height=100");
//myWindow.document.write("<div id='hola'>This is 'myWindow'</div>");
alert(myWindow.document.getElementById("result").innerHTML);
myWindow.close();
}
</script>
And this is my Child Window ( pag1.html ) code 这是我的子窗口（ pag1.html ）代码
<body>
<div id="result">1</div>
<div id="msj">Correcto</div>
</body>
and when I run it says and just open new window but it doesn't show the message 当我运行时，它说，只是打开新窗口，但不显示消息
Cannot read property 'innerHTML' of null
3 个解决方案
解决方案1
2 2017-05-23 20:45:47
window.open() is asynchronous, you need to wait for the document to load. window.open()是异步的，您需要等待文档加载。
function buttonset () {
var myWindow = window.open("pag1.html", "myWindow", "width=200,height=100");
myWindow.onload = function() {
alert(myWindow.document.getElementById("result").innerHTML);
myWindow.close();
};
}
解决方案2
1 已采纳 2017-05-23 20:43:49
Use load event of opened window 使用打开的window load事件
myWindow.onload = function() {
// do stuff
}
解决方案3
0 2017-05-23 21:00:35
The page is still loading. 该页面仍在加载中。 So you can attach an inline onload function on the body tag of pag1.html 因此，您可以在pag1.html的body标签上附加一个内联onload函数
pag1.html pag1.html
<body onload='doIt()'>
<div id="result">1</div>
<div id="msj">Correcto</div>
<script>
function doIt() {
alert(document.getElementById("result").innerHTML);
}
</script>
</body>
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