首頁 > 開發者 > JavaScript
window.returnValue 使用方法 returnValue 是 javascript 中 html 的 window 對象的屬性,目的是返回視窗值, 當用 window.showModalDialog 函數開啟一個 IE 的強制回應視窗(強制回應視窗知道吧,就 是開啟後不能操作父視窗,只能等強制回應視窗關閉時才能操作)時,用於返回視窗的 值,
下面舉個例子:
1、parent.html Html 代碼 //father.html
<HTML>
<HEAD>
<META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE></TITLE>
<script language="javascript">
function showmodal(){
var ret = window.showModalDialog("child.htm",null,"dialogWidth:350px;dialogHeigh t:350px;help:no;status:no");
if (ret){
alert('子視窗返回真!');
}else{
alert('子視窗返回假!');
}
}
</script>
</HEAD>
<BODY>
<INPUT id=button1 type=button value=Button name=button1 onclick="showmodal() ;">
</BODY>
</HTML>
2、child.html Html 代碼 //child.html
<HTML>
<HEAD> <META NAME="GENERATOR" Content="Microsoft Visual Studio 6.0">
<TITLE></TITLE>
<script language="javascript">
function trans(tag){
if (tag==0){
window.returnValue=false;
} else{
window.returnValue =true;
} window.close();
}
</script>
</HEAD>
<BODY>
<INPUT id=button1 type=button value="返回真" name=button1 onclick="trans(1)">
<INPUT id=button2 type=button value="返回假" name=button2 onclick="trans(0)">
</BODY>
</HTML>
總結： 這樣一來可以實現從強制回應視窗向父視窗傳遞值的作用,這個 returnValue 除了 可以是布爾值,整型值等以外還可以是個 js 數組，用來傳遞大量資料。
Start building with 50+ products and up to 12 months usage for Elastic Compute Service
1 on 1 presale consultation
24/7 Technical Support 6 Free Tickets per Quarter Faster Response
Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.
A comprehensive suite of global cloud computing services to power your business
Payment Methods We Support
