how to call this javascript function from asp.net codebehind pageload..
<script type="text/javascript">
function abc() {
alert("Hello! I am an alert box!");
}
</script>
Is it possible to pass an integer array in to javascript function from asp.net codebehind pageload?
Try below code :
protected void Page_Load(object sender, EventArgs e)
{
System.Web.UI.ScriptManager.RegisterStartupScript(this, this.GetType(), "abc", "abc();", true);
}
1. Update > Passing string parameter :
protected void Page_Load(object sender, EventArgs e)
{
var message = "hi";
System.Web.UI.ScriptManager.RegisterStartupScript(this, this.GetType(), "abc", "abc('" + message + "');", true);
}
JavaScript Method with string parameter :
function abc(message) {
alert(message + ", I am an alert box!");
}
2. Update > Passing string parameter and numeric array to JS method:
protected void Page_Load(object sender, EventArgs e)
{
int[] numbers = { 10, 20, 30 };
string serializedNumbers = (new JavaScriptSerializer()).Serialize(numbers);
var message = "hi";
System.Web.UI.ScriptManager.RegisterStartupScript(this, this.GetType(), "abc", "abc('" + message + "', " + serializedNumbers + ");", true);
}
JavaScript Method with string and numeric array parameters:
function abc(message, numbers) {
alert(message + ", I am an alert box!");
for (var i = 0; i < numbers.length; i++) {
alert(numbers[i]);
}
}
protected void Page_Load(object sender, EventArgs e)
{
ClientScript.RegisterStartupScript(GetType(), "abc" + UniqueID, "abc();", true);
}
You need to use ScriptManager if you use ajax.
protected void Page_Load(object sender, EventArgs e)
{
ScriptManager.RegisterStartupScript(this, GetType(),
"abc" + UniqueID, "abc();", true);
}
Try
Dim script As String = String.Format("abc()", "")
ScriptManager.RegisterClientScriptBlock(Me, GetType(Page), UniqueID, script, True)
Or simply
ClientScript.RegisterStartupScript(GetType(), "abc", "alert('Hello! I am an alert box!')", true);
abc() to abcYou can't call a JavaScript function from the codebehind, but you can return a response that includes JavaScript that invokes the function when the page loads in the browser. Just make sure that your page includes
<script type="text/javascript">
function abc() {
alert("Hello! I am an alert box!");
}
abc();
</script>
That could be either as part of the ASPX page or you could register it as a script block in the codebehind.
