Union of Two Arrays in Javascript

Union of Two Arrays in Javascript is the today topic of discussion in this tutorial.

**Figure:** Union of Two Arrays Javascript

Algorithm of Union of Two Arrays in Javascript

Initialize Two Array: ( Array1 and Array2 with values)
Initialize result [ ] as empty.
Initialize and obj { } as empty.
Copy all elements of Array1 to obj.
Copy all elements of Array2 to obj.
x is present in obj, then copy x into result.
Return result.
Display result

Union of Two Arrays in Javascript

<!DOCTYPE html>
<html>
<head>                                                                       // head start
<title > Programs In Java Script </title>                    //title of the Program
</head>                                                                     //head close 
<body>                                                                     //body start

<h2>                                                                           //heading start
 <b> Union Of Two Array</b>                                 //heading text
</h2>                                                                            //heading close
<br>                                                                                // next line

<p id="demo"></p>                                              //paragrapgh
<br>                                                                                 // next line

<script>                                                                 //java Script Start
function union()                                                       //function of union
{      
var array1=[1, 2, 3,4];                                           //array 1
var array2=[100, 2, 1, 10];                               ///array 2
	var result = [];                                             ///variable result
	var obj = {};                                                /// variable obj
	for (var i = 0; i < array1.length; i++)        //foor loop
    {
		obj[array1[i]] = true;                    
	}
	for (var j = 0; j < array2.length; j++)                  //foor loop            
    {
		
obj[array2[j]] = true;
}
	
for(const x in obj)
    {
		
result.push(x);
	}
	
return result;                                    //return result
    }
document.write(union());                            //display result

</script>

</body>

</html>

<!DOCTYPE html>

<html>

<head> // head start

<title > Programs In Java Script </title> //title of the Program

</head> //head close

<body> //body start

<h2> //heading start

<b> Union Of Two Array</b> //heading text

</h2> //heading close

<br> // next line

<p id="demo"></p> //paragrapgh

<br> // next line

function union() //function of union

{

var array1=[1, 2, 3,4]; //array 1

var array2=[100, 2, 1, 10]; ///array 2

var result = []; ///variable result

var obj = {}; /// variable obj

for (var i = 0; i < array1.length; i++) //foor loop

{

obj[array1[i]] = true;

}

for (var j = 0; j < array2.length; j++) //foor loop

{

obj[array2[j]] = true;

}

for(const x in obj)

{

result.push(x);

}

return result; //return result

}

document.write(union()); //display result

</script>

</body>

</html>

Output

Union of two array

1, 2, 3, 4, 10, 100