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Jun 28th, 2017
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  1. <!DOCTYPE HTML>
  2. <html>
  3.     <head>
  4.         <title>Addition</title>
  5.         <script type = "text/javascript">
  6.         colorStr = new Array("red", "black", "blue", "yellow", "green", "grey", "cyan", "orange");
  7.         function colorCheck(color)
  8.         {
  9.             for (i =0; i < colorStr.length; i++)
  10.             {
  11.                 if (colorStr[i] == color)
  12.                 {
  13.                     return true;
  14.                 }
  15.             }
  16.         }
  17.         function adder()
  18.         {
  19.             unorderedList = document.getElementById("grab")
  20.             el = document.getElementById("info")
  21.             if (colorCheck(el.value)){
  22.                 listElement = document.createElement("li");
  23.                 listElement.innerHTML = el.value;
  24.                
  25.                 unorderedList.appendChild(listElement).style.color = el.value;
  26.             }
  27.             else
  28.                 alert("not a color");
  29.    
  30.         }
  31.         function remover()
  32.         {
  33.             ulCheck = document.getElementById("grab").innerHTML;
  34.             if(ulCheck == ""){
  35.                 alert ("nothing to remove");
  36.                 return;}
  37.             else {
  38.             unorderedList = document.getElementById("grab")
  39.             el = document.getElementById("info")
  40.             unorderedList.removeChild(unorderedList.lastChild);
  41.             }
  42.         }
  43.         </script>
  44.     </head>
  45.     <body>
  46.         <div> Enter one of the following colors: red, black, blue, yellow, green, grey, cyan, orange </div>
  47.         <input type="textbox" value="type here" onclick = "value=''" id = "info" />
  48.         <input type="button" value = "Add" onclick = "adder();" />
  49.         <input type="button" value = "Remove" onclick = "remover();" />
  50.         <ul id = "grab">
  51.         </ul>
  52.     </body>
  53. </html>
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