Jquery preselect dropdown menu option in a plugin - javascript

I asked here a couple of days ago how can i make a dropdown section in a form pre select an option.
I have got an answer and tried it and some other suggestions i have found online, all of which had failed.
I attached two pictures showing what I did, so hopefully you guys will be able to help me.
(bear in mind that i used a plugin which only allows me to add code not edit the given one)
Num1
thats how the plugin made the form, i cannot edit it
Num2
thats what i have tried and it did not work
EDIT
here is the code the pulgin made:
<label class="fitText" style="font-size: 16px;">Product</label>
<select name="Product" data-export-field="">
<option value=""> - Product - </option>
<option value="A" data-price="0">
A
</option>
<option value="B" data-price="14">
B
(+$14.00)
</option>
</select>
What I made:
<script>
$(window).load(function() {
$('#Product option[value=A]').attr('selected','selected');
});
</script>
Hope you guys will help me! :D
Thanks
Yarin

This should achieve what you want-
script -
$(document).ready(function() {
$('select[name=Product] > option[value=A]').attr('selected','selected');
});
The # selector is for ID's, not name. Use the same selector for name as value.
$(document).ready() (or $(function() {} )) should be a little bit quicker as it calls when the DOM is ready for manipulation rather than when everything is ready. I've also heard that $(window).load(function() {}) can be called at unintentional times, project depending.
Otherwise your code is solid.

Or you can try this one :
$(document).ready(function(){
$("#select_id").val('A');
});
On page load, set default value for the select tag. Might help you.

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I believe your HTML inside the Advanced context have something you miss.
In your HTML in onselect your typed :, but, for use onselect and call one function you have to use onselect="nameFnction()"
See one simple example inside MDN to use this tag:
<input type="text" onselect="myFunction()" value="Hello world!">
Now, see other example for works fine according the choice:
<select>
<option onclick="doSomethingA(this);">A</option>
<option onclick="doSomethingB(this);">B</option>
<option onclick="doSomethingC(this);">C</option>
</select>
And with jQuery (Your id is select and not selected):
$('#select option:selected').val()

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This is the div you are taking about in that page
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To modify the DOM using Javascript.
http://woork.blogspot.in/2007/10/how-to-change-text-using-javascript.html
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Code used to attached the event to dojo.form.Select:
var findLayerListOnChangeEvent = dojo.connect(findLayerListSelect, "onChange", function(newValue) {
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<select id="findLayerList" data-dojo-type="dijit.form.Select" data-dojo-props="required:true, sortByLabel:false" name="findLayerList" disabled="disabled" maxHeight=-1 style="width:150px;">
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What is findLayerListSelect in your JS code.
In HTML code replace id with data-dojo-id.
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<div id="selModeBox" title="Mode selection Form">
<label for="mode">Select modes:</label>
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The Javascript to implement:
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Its possible that jQuery 1.8 is causing problems as its not tested yet, please see https://github.com/fnagel/jquery-ui/issues/261
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Why is'nt this JavaScript function not redirecting to selected option value?

I have a JavaScript function:
function redirect(location) {
window.location.href=location;
}
Which I'm using like so:
<select onChange="redirect(this.options[this.selectedIndex].value)">
<option value="http://mysite.com/videos">One</option>
<option value="http://mysite.com/music">Two</option>
</select>
I'm expecting for it to redirect to the selected option value, but does'nt seem to do anything? - bare in mind im new to JavaScript.
Hope someone can help! :)
Try this:
<select onChange="redirect(this.value)">
try this
<script>
function redirect() {
var location=document.getElementById("i").value;
window.location.href=location;
}
</script>
<select onChange="redirect()" id="i">
<option value="http://mysite.com/videos">One</option>
<option value="http://mysite.com/music">Two</option>
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Your code itself is functional (i tried).
Where have you placed the function definition?
Is there any other javascript code on the page?
In which browser are you testing this?
If you're running it in Firefox check the error console (Tools->error console).
I also noticed that Internet Explorer 8 blocks this javascript, I haD to check allow blocked content for this to work.
can be because location is a short way to call window.location, so just rename your input parameter - _location, newLocation, loc, whatever else.
UPDATE
Nope, this should work. Having only
<select onChange="redirect(this.options[this.selectedIndex].value)">
<option value="http://mysite.com/videos">One</option>
<option value="http://mysite.com/music">Two</option>
</select>
<script type="text/javascript">
function redirect(location) {
window.location.href=location;
}
</script>
on the page gave me the desired result, so the error may be somewhere around - just give us more code!

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