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JavaScript Array concat() Method

Array concat() method is used to creates a new array consisting of the elements in the object. By using this method, you can merge two or more arrays together. This method does not change the original arrays passed as arguments.

Syntax:

var new_array = old_array.concat(value1[, value2[, ...[, valueN]]])

Parameter Values

Parameter	Description
array2, array3, ..., arrayX	It Required the arrays to be joined

Browser Support

Method	Chrome	Edge	Firefox	Safari	Opera
concat()	1.0	5.5	1.0	Yes	Yes

Here is an example of JavaScript array concat() Method:

<html>
<body>
<button onclick="myconcate()">click me</button>
<p id="concat"></p>
<script>
function myconcate() {
  var x = ["red", "blue"];
  var y = ["yellow", "green", "orange"];
  var children = x.concat(y); 
  document.getElementById("concat").innerHTML = children;
}
</script>
</body>
</html>

Output:

Example 2:

<html>
<body>
<script> 
function concate()
{ 
  var alpha = ['a', 'b', 'c']; 
  document.write(alpha.concat(1, [2, 3])); 
} 
concate(); 
</script> 
</body>
</html>

Output:

JavaScript Array Reference

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