javascript 如何在javascript中调用另一个窗口的函数？
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How to call a function of another window in javascript?
提问by omega
I open a new tab using window.open. The new tab has a javascript myfunctionfunction in it defined in a script tag. From the window that opens the new window, I want to run that function.
我使用 window.open 打开一个新选项卡。新选项卡myfunction在脚本标记中定义了一个javascript函数。从打开新窗口的窗口中，我想运行该功能。
How can I do that?
我怎样才能做到这一点？
Thanks
谢谢
Something like
就像是
var a = window.open("mypage.html", "_blank");
a.myfunction("hi");
EDIT
编辑
This isn't working. Its not doing the alert.
这不起作用。它没有做警报。
opener
开瓶器
var w = window.open("../scripts/map.php", "_blank");
w.postMessage("The user is 'bob' and the password is 'secret'", "*");
new tab
新标签
function receiveMessage(event) {
alert(event.data);
}
window.addEventListener("message", receiveMessage, false);
回答by HDT
var a = window.open("mypage.html", "_blank");
a.focus();
a.addEventListener('load', function(){
a.myfunction("hi");
}, true);
回答by The One and Only ChemistryBlob
Assuming a php file provides the content for the new window:
假设一个 php 文件为新窗口提供了内容：
window.open('http://www.example.com/myFile.php?parameter=' + parameter, 'myWindow', 'width=500,height=500,scrollbars=yes').focus();
Then in the php section of myFile.php:
然后在 myFile.php 的 php 部分：
$myParam = (isset($_GET['parameter'])) ? $_GET['parameter'] : null;
Then using a body onload call a function:
然后使用主体 onload 调用一个函数：
<head>
<script>
var myParam = '<?= $myParam ?>';
</script>
</head>
<body onload="myFunction()">
The function tests for the existence of $myParam:
该函数测试 $myParam 是否存在：
function myFunction() {
if (myParam) {
//do Something
}
}
