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POUse UP/DOWN arrow keys to call a function (and passing parameter)
 

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    <p>I have a survey in which there are numerous text inputs taking numerical value each of which has a pair of increment/decrement buttons. I have a working function as follows:</p> <p>HTML:</p> <pre><code>&lt;div class="text-input-wrapper"&gt; &lt;input type="text" /&gt; &lt;div class="buttons inc-dec"&gt; &lt;button class="increment"&gt;Increment&lt;/button&gt; &lt;button class="decrement"&gt;Decrement&lt;/button&gt; &lt;/div&gt; &lt;/div&gt; function incDec(btnClass) { var input = $(this).closest('.text-input-wrapper').find('input'); var inputVal = $(this).closest('.text-input-wrapper').find('input').val(); if ($(this).hasClass('increment')) { if (inputVal.length == 0) { ($(input).val('1')); } else { inputVal++; $(input).val(inputVal); } } // increment else if ($(this).hasClass('decrement')) { if (inputVal.length == 0) { ($(input).val('0')); } else { inputVal--; $(input).val(inputVal); } } // decrement return false; } // function incDec </code></pre> <p>Now I need to enable incrementing and decrementing value using the UP &amp; DOWN keys; I took a stab with the following but with no joy:</p> <pre><code>$(document).keydown( function(eventObject) { // UP arrow if(eventObject.which==38) { var btnClass = "increment"; } else // DOWN arrow if(eventObject.which==40) { var btnClass = "decrement"; } incDec(btnClass); </code></pre> <p>I’d greatly appreciate some clarification as to how to go about firing the increment/decrement using the up/down keys,</p> <p>Many thanks in advance, </p> <p>svs</p>
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    1. COThanks gents. I've edited my question, as in fact I did have the incDec function taking the btnClass parameter. Still no joy; I'm especially newb re: passing arguments/parameters, etc.
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