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POAdding an EventListener to a form, running a function on submit on whatever child <input> in the form actually called the submit
 

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    <p><a href="http://jsfiddle.net/twG6R/8/" rel="nofollow noreferrer">http://jsfiddle.net/twG6R/8/</a></p> <p>Ignore the fact that this is a completely toy application. If there is NO time in which this is the right way to do things however, let me know.</p> <p>So, I have a <code>&lt;form&gt;</code> with two <code>&lt;input&gt;</code> fields in it. I have an eventListener stuck to the <code>&lt;form&gt;</code> listening for a "submit" event. I then want to run a function which does some stuff to the number the user put in either input1 or input2. User types a number in say, input2, hits enter, and the function calls on this.id, but returns the id of the form, not the actual input box that is a child of the form.</p> <p>What can I do?</p> <p>EDIT: Should I look at all the child elements of <code>form</code> somehow and test each child to see if there's something in it, and then call <code>alertGrade</code> with the non-empty children as a parameter?</p> <p>HTML:</p> <pre><code>&lt;form id="form"&gt; &lt;input type="number" id="score1" value="" min="0" max="100"&gt; &lt;input type="number" id="score2" value="" min="0" max="100"&gt; &lt;input type="submit" value="Grade"&gt; &lt;/form&gt; </code></pre> <p>JavaScript:</p> <pre><code>function alertGrade(elementID) { var score = document.getElementById(elementID).value; var grade = calculateGrade(score); alert("Score of " + score + ": " + grade); } function loaded() { document.getElementById("form").addEventListener("submit", function(event) { event.preventDefault(); // this.id will show "form" alert(this.id); alertGrade(this.id);}, false); } window.addEventListener("load", loaded, false); </code></pre>
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