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    <p>Alright so I'm going to try to address all the parts of your question in my answer.</p> <p>As Ian had mentioned, there is a syntax error in your <code>for</code> statement.</p> <p>On second thought I'll give the code then do the explanation. I have included the entire HTML document for purposes of clarity:</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html lang=en-CA&gt; &lt;meta charset=utf-8&gt; &lt;title&gt;JavaScript in multi-select&lt;/title&gt; &lt;script&gt; function selectItems(stringFromDB) { 'use strict'; var select = document.getElementById("multiselectid"), stringArray = stringFromDB.split(","), count = 0, i; for(count = 0; count &lt; stringArray.length; count += 1) { for(i = 0; i &lt; select.options.length; i += 1) { if(select.options[i].value === stringArray[count]) { select.options[i].selected = true; } } } } window.addEventListener('load', function() { 'use strict'; // The "string from DB" would be the parameter here selectItems( 'hockey,volleyball,football'); }, false); &lt;/script&gt; &lt;body&gt; &lt;div&gt; &lt;select id='multiselectid' multiple&gt; &lt;option value="hockey"&gt;Hockey&lt;/option&gt; &lt;option value="golf"&gt;Golf&lt;/option&gt; &lt;option value="volleyball"&gt;Volleyball&lt;/option&gt; &lt;option value="football"&gt;Football&lt;/option&gt; &lt;/select&gt; &lt;/div&gt; </code></pre> <p>Now for the explanation.</p> <ol> <li><p>Instead of using the traditional <code>onload</code> event attribute on the body element to run the script on page load (as you had wanted), I attached an event handler with the event <code>load</code> to the <code>window</code> DOM element. Event handlers are more useful as they help separate the JavaScript from the HTML (and many other reasons). You can read more about event handlers here: <a href="https://developer.mozilla.org/en-US/docs/DOM/element.addEventListener" rel="nofollow">https://developer.mozilla.org/en-US/docs/DOM/element.addEventListener</a></p></li> <li><p>In the function <code>selectItems()</code>, I have put all of the variables onto one declaration to keep the code clean.</p> <p><strike>3. To avoid potential issues with arrays, I have called the variable <code>stringArray</code> instead. <code>array</code> is a reserved word in JavaScript and could cause issues with some browsers, although I'm not completely sure which ones (if any).</strike></p></li> <li><p>ALWAYS, ALWAYS, ALWAYS use <code>===</code> instead of <code>==</code>. That way you are sure the comparison is strict and correct (i.e. both things being compared are of the same type, in this case: strings).</p></li> <li><p>It is a good idea to force the handling of your JavaScript functions in strict mode by using <code>'use strict;'</code>. This way the browser will stop (and throw exceptions) if it detects something that is not allowed, and thus allowing you to write better JavaScript code.</p></li> </ol> <p>Hope this helped, feel free to ask more questions if you're still confused!</p>
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    1. POHow to set the selected options in multiselect with javascript
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    1. CO`1.` I'm not sure how using `addEventListener` helps separate Javascript from the HTML more than something like `.onclick`. `2.` One declaration isn't necessarily cleaner, especially when you make it one large line. `3.` "array" is not a reserved word..."Array" is...Javascript is case-sensitive. `4.` `===` is not always the correct choice - this is the perfect example because some people may not be sure what `.value` returns (which is always a string) or `.split`, but if you're comparing them, there's no reason not to use `==`.
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    2. CO`1.` Initially the OP wanted to "do it in java-script[_sic_]" so in that case `addEventListener` would be the alternative to `onload`. But with jQuery then `$(document).ready( function() { ... });` already separates the JavaScript from the HTML. `2.` You can put it on multiple lines, but IMO one declaration is cleaner. `3.` I stand corrected. `4.` `===` is the correct choice. Since `.val()` and `.value` returns strings, you should be comparing a string with it.
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    3. CO@rink.attendant.6 - Thanks for the post - the variable declaration piece is definitely cleaner and making the string the parameters of the function and doing the split inside makes a lot of sense. The reason I asked for JS was because it's easier for me to understand...the Jquery is just so foreign. Although I will say, did end up using Ian's $(document).ready idea because I was already using it (I didn't even realize it). Again....I'm pretty new. Really appreciate the help though.
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