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Struts 1 - JSP - html:optionsCollection inside function of javascript didn't work

 
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Hi Ranchers,
I have a problem using <html: optionsCollection ..> element inside function of javascript.
I want to display a <div class="row"> which consist of list of Material name in dropdown button and the input text for Percentage(%) of the material choosen.
We can add more of that div-row by clicking 'add' button. So I make a javascript function that can create another div-row after click the button.

The function of javascript is below:



The problem is the <html: optionsCollection ..> element always make the javascript can't be executed.
If I click the 'add' button, nothing happened.
If I delete those part, the dropdown is displayed but there's no value of material name appears. I need that part for displaying the material name, but it didn't work inside js.

Any idea why it's happened? Need your help please..
 
Don't get me started about those stupid light bulbs.
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