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POStuck on how to add a "select all" function with discount
 

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  1. POStuck on how to add a "select all" function with discount
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    <p>I basically have a form that calculates totals in a list by selecting check boxes. However, I'd like to modify it so that people can select "check all" so it selects all the check boxes, and makes the total $999 rather than what it would be if they just added all the items one by one. So it's basically a discount if they select all of the check boxes. Has anyone done something like this before? Any help would be greatly appreciated.</p> <p>Here is the code I have right now, and I'm just stuck on this...</p> <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt; &lt;link rel="shortcut icon" type="image/x-icon" href="../favicon.ico" /&gt; &lt;link rel="icon" type="image/x-con" href="../favicon.ico" /&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8" /&gt; &lt;!-- Begin JavaScript --&gt; &lt;!--- ADDING THE CHECK BOXES ---&gt; &lt;script language="javascript" type="text/javascript"&gt; //Define global form total: var form_amount=0; //Define function to manipulate the form total per item selected/deselected: function CheckChoice(whichbox) { //If box was checked, accumulate the checkbox value as the form total, //Otherwise, reduce the form total by the checkbox value: if (whichbox.checked == false) { form_amount -= eval(whichbox.value); } else { form_amount += eval(whichbox.value); } //Re-set displayed total on form: document.MyAddingForm.amount.value = eval(form_amount); } //Define function to init the form on reload: function InitForm() { //Reset the displayed total on form: document.MyAddingForm.amount.value='0'; //Set all checkboxes on form to unchecked: for (xx=0; xx &lt; document.MyAddingForm.elements.length; xx++) { if (document.MyAddingForm.elements[xx].type == 'checkbox') { document.MyAddingForm.elements[xx].checked = false; } } } &lt;/script&gt; &lt;title&gt;Add Boxes&lt;/title&gt; &lt;/head&gt; &lt;body&gt; &lt;form action="BLANKPAGE_TEST_2.cfm" method="post" id="addCommentForm" name="MyAddingForm" onsubmit="return submit_form()"&gt; &lt;table id="commentTable"&gt; &lt;tr&gt; &lt;th&gt;&lt;label&gt;Item One&lt;/label&gt;&lt;/th&gt; &lt;td&gt; &lt;label&gt;&lt;input type="checkbox" name="ItemOne" value="119.00" onclick="CheckChoice(this);" onfocus="startCalc();" onblur="stopCalc();" class="checkbox" /&gt; $119&lt;/label&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;th&gt;&lt;label&gt;Item Two&lt;/label&gt;&lt;/th&gt; &lt;td&gt; &lt;label&gt;&lt;input type="checkbox" name="ItemTwo" value="119.00" onclick="CheckChoice(this);" onfocus="startCalc();" onblur="stopCalc();" class="checkbox" /&gt; $119&lt;/label&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;th&gt;&lt;label&gt;Item Three&lt;/label&gt;&lt;/th&gt; &lt;td&gt; &lt;label&gt;&lt;input type="checkbox" name="ItemThree" value="119.00" onclick="CheckChoice(this);" onfocus="startCalc();" onblur="stopCalc();" class="checkbox" /&gt; $119&lt;/label&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;th&gt;&lt;label&gt;Item Four&lt;/label&gt;&lt;/th&gt; &lt;td&gt; &lt;label&gt;&lt;input type="checkbox" name="ItemFour" value="119.00" onclick="CheckChoice(this);" onfocus="startCalc();" onblur="stopCalc();" class="checkbox" /&gt; $119&lt;/label&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;th&gt;&lt;label&gt;Item Five&lt;/label&gt;&lt;/th&gt; &lt;td&gt; &lt;label&gt;&lt;input type="checkbox" name="ItemFive" value="119.00" onclick="CheckChoice(this);" onfocus="startCalc();" onblur="stopCalc();" class="checkbox" /&gt; $119&lt;/label&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;th class="altTH"&gt;&lt;label&gt;Total $:&lt;/label&gt;&lt;/th&gt; &lt;td class="altTD"&gt;&lt;input type="text" name="amount" readonly="readonly" class="inputSmall" /&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; &lt;/form&gt; &lt;/body&gt; &lt;/html&gt; </code></pre>
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