JavaScript array unique

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

JavaScript array unique

JavaScript array unique

JavaScript array unique

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