Saturday 25 January 2014

waj to find the element and remove from array

<! searching an array-->
<html>
 <head>
  <title>searching a element</title>
 </head>
 <body>
  <script language="JavaScript">
  var a=["Ram","kiran",34,36.54,"sita"];
//  a=["Ram","kiran",34,36.54,'sita',"sita"];//valid
  //display the array
  document.writeln("<p>");
  var n=a.length;
  for(var i=0;i<n;i++)
  {
   document.write(a[i]+ " ,");

  }
  document.writeln("</p>");
  //ask the user to remove item
  var r=prompt("Please type what you want to remove"," ");
  var temp=new Array(a.length-1);//we have to remove one element so -1 is must else we get "undefined"
  var m=0;
    function searchItem()
  {
  //for loop searches, and removes
  for(var i=0;i<n;i++)
  {
   if(a[i]==r)
   {
    //does nothing
    ;
   }
   else
   {
    temp[m]=a[i];
    m++;
   }
  }//end of for loop
  //copying from array temp to array a
  a=temp;
 }//end of function
 searchItem();
  //display the new array
  document.write("<p>");
  n=a.length;
  for(var i=0;i<n;i++)
  {
   document.write(a[i]+" ,");
  }
  document.writeln("</p>");
//  document.close();
 </script>
 </body>
</html>

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