In this snippet we will see how to call javascipt function from codebehind.
Example:
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Designer
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<head runat="server">
<script type="text/javascript">
function
showMessage() {
alert('invoked
JS funciton showMessage');
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<input type="button"
value="Call
JS function from Designer"
onclick="showMessage()"
/>
</div>
</form>
</body>
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Code Behind:
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protected void
Page_Load(object sender, EventArgs e)
{
Page.ClientScript.RegisterStartupScript(GetType(), "Key", "showMessage();",
true);
}
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Output: 'invoked
JS funciton showMessage' will be invoked after loading the page or onclick of button.
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