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JavaScript array unique

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In this Tutorial we want to describe a code that help you in understanding array unique.

JavaScript array unique

     

In this Tutorial we want to describe a code that help you in understanding array unique. The program uses JavaScript as  scripting language. The code try to explain you a HTML Page that include a script, inside the script the variable arr instantiate an array object. This variable is initialized with the array object element. The  document. write print the Array before removing duplicate element.

Array.Array.Unique - This function return you the unique element with no duplicate element.

Finally the document. write print the array after removing duplicate element.

Javascript_array_unique.html

<html>
  <head>
  <title>JavaScript Array unique</title>
  <h1>JavaScript Array unique</h1>
  <hr></hr>
  <script  type="text/javascript">
  function unique(arrayName)
  {
  var newArray=new Array();
  label:for(var i=0; i<arrayName.length;i++ )
  {  
  for(var j=0; j<newArray.length;j++ )
  {
  if(newArray[j]==arrayName[i]) 
  continue label;
  }
  newArray[newArray.length= arrayName[i];
  }
  return newArray;
  }
  </script>
  <script>
  var arr = new Array(0,2,4,2,6,4,8,6,10);
  document.write("Array before removing 
  duplicate element: "
+arr+"<br>");
  document.write("Array after removing 
  duplicate element: "
+unique(arr));
  </script>
  </head>
  <body>
  </body>
</html>

Output of the program

Download Source code

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Posted on: November 13, 2008

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