title: Javascript check all button for items that are in a loop
body: <p>I am having trouble making a button that will check all the boxes (and possibly another button that unchecks them all. </p>
  
  <p>So what i need is: A function that will check all the boxes and a line of code to put into html to call that function.</p>
  
  <p>My items are NOT in a form.</p>
  
  <p>This is the code inside my .js file (array)</p>
  
  <pre><code>var computer = new Array();
  {
  computer[0] = "10001, Nvidia Geforce GTX 690, $1200"
  
  computer[1] = "10002, Raedon HD 7950, $450"   
  
  computer[2] = "20001, Ivy Bridge i7 3770, $400"
  
  computer[3] = "20002, Ivy Bridge i7 3770k, $420"
  
  computer[4] = "20003, Sandy Bridge i7 2700k, $340"
  
  computer[5] = "20004, Bulldozer FX-8150, $270"
  
  computer[6] = "30001, Antec eleven-hundred, $120"
  
  computer[7] = "30002, Coolermaster HAF-X, $170"
  
  computer[8] = "30003, Antec three-hundred, $50"
  
  computer[9] = "30004, Corsair 550D, $160"
  
  computer[10] = "40001, INTEL-ASrock fatal1ty Z77 Professional Motherboard, $250"
  
  computer[11] = "40002, INTEL-ASrock Z77 extreme9 Motherboard, $350"
  
  computer[12] = "40003, AMD-ASrock fatal1ty 990FX Professional Motherboard, $240"
  
  computer[13] = "40004, AMD-ASUS Sabertooth 990FX Motherboard, $260"
  
  }
  </code></pre>
  
  <p>This is the code inside my HTML.</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
  
  for(x=0; x&lt;=computer.length-1; x++) {
  
    document.write("&lt;tr id='"+x+"'&gt;&lt;td&gt;&lt;label&gt;&lt;input type='checkbox' id='labeltest' name='item' value='"+x+"'/&gt; "+computer[x].split(",")[0]+"&lt;/label&gt;&lt;/td&gt;&lt;td&gt;"+computer[x].split(",")[1]+"&lt;/td&gt;&lt;td&gt; &lt;input name='qty' id='qty' type='textbox' value='0' onchange='qtychange(document.myform.qty);'/&gt; &lt;/td&gt;&lt;td&gt;"+computer[x].split(",")[2]+"&lt;/td&gt;&lt;/tr&gt;");
  
  }
  </code></pre>
  
  <p></p>
  
  <p>Thanks in advance :)</p>