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On my dropdownlist, I set it up so the onchange should call checkval and pass in the id of element. I just started off with really basic login, but cant even get the alert to display. What am I doing wrong?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
<script>
function checkval(id){
if($('#' + id).val == "Other")
{
alert("You Selected Other");
//other logic will go here
}
}
</script>
</head>
<body>
<select name="items1[]" id="items1[]" onchange="checkval(id);">
<option selected value="">Select One</option>
<option value="one">One</option>
<option value="Other">Other</option>
</select>
<select name="items2[]" id="items2[]" onchange="checkval(id);">
<option selected value="">Select One</option>
<option value="one">One</option>
<option value="Other">Other</option>
</select>
</body>
</html>
258
onchange is not fired when the value of an input is changed. It is only changed when the input's value is changed and then the input is blurred. What you'll need to do is capture the keypress event when fired in the given input. Then you'll test the value of the input against the value before it was keypressed.
The onchange event occurs when the value of an element has been changed. For radiobuttons and checkboxes, the onchange event occurs when the checked state has been changed.
Insert(int index, “ItemName”): if we want the item to be added at a specific position, this property helps to add a new item at a specific position in the drop-down list control. DropDownList1.
Edit: Seems like it fails for id items1[].. So changed your markup bit.. Fixed jsFiddle here.
See link for What characters are allowed in DOM IDs?
Change your markup as onchange="checkval(this.id);".
and the script as
function checkval(id){
if($('#' + id).val() == "Other")
{
alert("You Selected Other");
//other logic will go here
}
}
Try this:
<select name="items1[]" id="items1[]" onchange="checkval(this.id);">
Or even better, wire up your handler unobtrusively,
$(document).ready(function(){
$(".items").change(function(){
checkval(this.id);
});
});
and remove the onchange attributes and add a class:
<select name="items1" id="items1" class="items">
<option selected value="">Select One</option>
<option value="one">One</option>
<option value="Other">Other</option>
</select>
<select name="items2" id="items2" class="items">
<option selected value="">Select One</option>
<option value="one">One</option>
<option value="Other">Other</option>
</select>
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