Javascript 如何在asp.net页面加载时调用javascript函数
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How to call javascript function on page load in asp.net
提问by MonaliJ
Possible Duplicate:
Javascript that executes after page load
可能的重复：
页面加载后执行的 Javascript
i have application in asp.net 4.0
我在 asp.net 4.0 中有应用程序
i have javascript to display client zone offset into text box:- `
我有 javascript 将客户端区域偏移显示到文本框中：-`
<script type="text/javascript">
function GetTimeZoneOffset() {
var d = new Date()
var gmtOffSet = -d.getTimezoneOffset();
var gmtHours = Math.floor(gmtOffSet / 60);
var GMTMin = Math.abs(gmtOffSet % 60);
var dot = ".";
var retVal = "" + gmtHours + dot + GMTMin;
document.getElementById('<%= offSet.ClientID%>').value = retVal;
}
</script>
`
`
Html MarkUp
Html 标记
<asp:HiddenField ID="clientDateTime" runat="server" />
<asp:HiddenField ID="offSet" runat="server" />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></body>
How can I call this function on page load so that I can display offset into textbox?
如何在页面加载时调用此函数，以便可以在文本框中显示偏移量？
回答by Satinder singh
Calling JavaScript function on code behind i.e.
On Page_Load
在 ie On 后面的代码上调用 JavaScript 函数 Page_Load
ClientScript.RegisterStartupScript(GetType(), "Javascript", "javascript:FUNCTIONNAME(); ", true);
If you have UpdatePanelthere then try like this
如果你有UpdatePanel，那么试试这样
ScriptManager.RegisterStartupScript(GetType(), "Javascript", "javascript:FUNCTIONNAME(); ", true);
View Blog Article : How to Call javascript function from code behind in asp.net c#
回答by Bilal Fazlani
<html>
<head>
<script type="text/javascript">
function GetTimeZoneOffset() {
var d = new Date()
var gmtOffSet = -d.getTimezoneOffset();
var gmtHours = Math.floor(gmtOffSet / 60);
var GMTMin = Math.abs(gmtOffSet % 60);
var dot = ".";
var retVal = "" + gmtHours + dot + GMTMin;
document.getElementById('<%= offSet.ClientID%>').value = retVal;
}
</script>
</head>
<body onload="GetTimeZoneOffset()">
<asp:HiddenField ID="clientDateTime" runat="server" />
<asp:HiddenField ID="offSet" runat="server" />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
</body>
</html>
key point to notice here is,body has an attribute onload. Just give it a function name and that function will be called on page load.
这里要注意的关键点是，body 有一个属性onload。只需给它一个函数名，该函数将在页面加载时被调用。
Alternatively, you can also call the function on page load event like this
或者，您也可以像这样在页面加载事件上调用该函数
<html>
<head>
<script type="text/javascript">
window.onload = load();
function load() {
var d = new Date()
var gmtOffSet = -d.getTimezoneOffset();
var gmtHours = Math.floor(gmtOffSet / 60);
var GMTMin = Math.abs(gmtOffSet % 60);
var dot = ".";
var retVal = "" + gmtHours + dot + GMTMin;
document.getElementById('<%= offSet.ClientID%>').value = retVal;
}
</script>
</head>
<body >
<asp:HiddenField ID="clientDateTime" runat="server" />
<asp:HiddenField ID="offSet" runat="server" />
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox></body>
</body>
</html>
回答by Denys Wessels
Place this line before the closing script tag,writing from memory:
将此行放在结束脚本标记之前，从内存中写入：
window.onload = GetTimeZoneOffset;
i think the question is how to call the javascript function on pageload
我认为问题是如何在页面加载时调用 javascript 函数
回答by Manish Nagar
use your code within
在其中使用您的代码
<script type="text/javascript">
function window.onload()
{
var d = new Date()
var gmtOffSet = -d.getTimezoneOffset();
var gmtHours = Math.floor(gmtOffSet / 60);
var GMTMin = Math.abs(gmtOffSet % 60);
var dot = ".";
var retVal = "" + gmtHours + dot + GMTMin;
document.getElementById('<%= offSet.ClientID%>').value = retVal;
}
</script>
