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JavaScript String concat() Method

JavaScript string concat() Method with example, by string literal, by string object (using new keyword), javascript string methods, charAt(index) method, concat(str) method, indexOf(str) method, lastIndexOf(str) method, lowerCase() method, upperCase() method, slice(beginIndex, endIndex) method, trim() method, toLowerCase(), slice(), concat(), charCodeAt() method etc.

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JavaScript String concat() Method

The JavaScript string concat() method combines two or more strings and returns a new string. This method doesn't make any change in the original string.

Syntax

The concat() method is represented by the following syntax:

string.concat(str1,str2,...,strn)

Parameter

str1,str2,...,strn - It represent the strings to be combined.

Return

Combination of strings.

JavaScript String concat() Method Example

Let's see some simple examples of concat() method.

Example 1

Here, we will print the combination of two strings.

<script>
var x="TheDeveloperBlog";
var y=".com";
document.writeln(x.concat(y));
</script>
Test it Now

Output:

TheDeveloperBlog.com

Example 2

Here, we will print the combination of three strings.

<script>
var x="TheDeveloperBlog";
var y=".com";
var z=" Tutorials";
document.writeln(x.concat(y,z));
</script>
Test it Now

Output:

TheDeveloperBlog.com Tutorials

Example 3

In the last example, we provided the space between the strings while initializing it. Here, we will perform the similar task through the method. 

<script>
var x="TheDeveloperBlog";
var y=".com";
var z="Tutorials";
document.writeln(x.concat(y+" "+z));
</script>
Test it Now

Output:

TheDeveloperBlog.com Tutorials

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