JavaScript array union

In this Tutorial we want to show you an example from array union in Java Script.

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JavaScript array union

     

In this Tutorial we want to show you an example from array union in Java Script. The code contain a script that include a variable arr1 and arr2 instantiate an array object initialized with respectively specified element. The document. write print the respective element in an arr1 and arr2 object.

arr1.concat(arr2)  -  This method return you the combine element of arr1 and arr2 are assigned to var arr3.

array.array(unique) -  This method remove the duplicate element from combined array object elements.

The document. write print the list of array union element with no duplication in it.

JavaScript_Array_union.html

<html>
  <head>
  <title>JavaScript Array union</title>
  <h1>JavaScript Array union</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 arr1 = new Array(0,2,4,4,4,4,4,5,5,6,6,6,7,7,8,9,5,1,2,3,0);
  var arr2= new Array(3,5,8,1,2,32,1,2,1,2,4,7,8,9,1,2,1,2,3,4,5);
  document.write("<b>"+"First Array is :"+"</b>"+arr1+"<br>");
  document.write("<b>"+"Second Array is :"+"</b>"+arr2+"<br>");
  var arr3=arr1.concat(arr2);
  </script><hr></hr>
  <script>
  document.write("<b>"+"Array after union are:  "+"</b>"+unique(arr3));
  </script>
 </head>
  <body>
  </body>
</html>

Output of the program

Download source code

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JavaScript array union

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