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POUse Javascript / JQuery to dynamically create multiple HTML buttons with different click event handlers
 

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  1. POUse Javascript / JQuery to dynamically create multiple HTML buttons with different click event handlers
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    <p>I am trying to use Javascript / JQuery to dynamically create several HTML buttons, each of which does something different when it is clicked.</p> <p>My first attempt looked like this:</p> <pre><code>function myFunc( target_div, num_buttons ) { var buttons=""; for ( var i=0; i&lt;num_buttons; i++ ) { buttons += '&lt;input type="button" id="button_'+i+'" value="button_'+i+'"&gt;&lt;/input&gt;'; } target_div.html( buttons ); var doButtonPress = function( i ) { alert( i ); // I actually do something more complicated here, but it's not important now } for ( var i=0; i&lt;num_buttons; i++ ) { $('#button_'+i).click( function() { doButtonPress(i); } ); } } </code></pre> <p>Unfortunately this doesn't work because (I think) when the click event happens, doButtonPress is always passed the current value of i in myFunc's scope, not - as I intended - the value i had when the click event was defined. Thus the value passed to doButtonPress is always equal to num_buttons regardless of which button is pressed. So I then tried this instead:</p> <pre><code>$('#button_'+i).click( new Function( "doButtonPress("+i+");" ) ); </code></pre> <p>Unfortunately this doesn't work either - I get a message "ReferenceError: Can't find variable: returnResult". I assume that's because the Function constructor's arg value isn't parsed until the click event happens, and at that time I'm already outside of myFunc's scope so doButtonPress is undefined? Am I getting this right so far?</p> <p>So ... what do I do? :-)</p>
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