JavaScript | Split a string with multiple separators

Last Updated : 26 Jul, 2021

Given a statement which contains the string and separators, the task is to split the string into substring.
String split() Method: The str.split() function is used to split the given string into array of strings by separating it into substrings using a specified separator provided in the argument.

Syntax:

str.split(separator, limit)

Parameters: This function accepts three parameters as mentioned above and described below:

str: This parameter holds the string to be split.
separator: It is optional parameter. It defines the character or the regular expression to use for breaking the string. If not used, the same string is returned (single item array).
limit: It is optional parameter. It is an integer which specifies the number of splits. All the items after limit are discarded.

Array join() function: The Array.join() function is used to join the elements of the array together into a string. This method adds the elements of an array into a string and returns the newly created string. The elements separates by a specific separator. Default separator used is comma (, ).

Syntax:

array.join(separator)

Parameters: This function accepts two parameters as mentioned above and described below:

array: The array to be joined.
separator: It is optional parameter. It specifies the separator to be used. If not passes, the default separator comma is used.

Example 1: This example splits a string by 2 separators Comma(, ) and space(‘ ‘) using .split() function.

html

<!DOCTYPE html> 
<html> 
    <head> 
        <title> 
            JavaScript | Split a string with
            multiple separators. 
        </title>
    </head> 
     
    <body style = "text-align:center;" id = "body"> 
         
        <h1 style = "color:green;" > 
            GeeksForGeeks 
        </h1> 
         
        <p id="GFG_UP" style="font-size:18px; font-weight:bold;"></p>
 
         
        <button onclick = "gfg_Run()"> 
            split
        </button>
         
        <p id="GFG_DOWN" style="font-size:25px; font-weight:bold;"></p>
 
         
        <script>
            var el_up = document.getElementById("GFG_UP");
            var el_down = document.getElementById("GFG_DOWN");
            var str = "A, computer science, portal!";
            el_up.innerHTML = str;
             
            function gfg_Run() {  
                var arr = str.split(/[\s, ]+/)
                el_down.innerHTML = arr;     
            }
        </script> 
    </body> 
</html>                    

Output:

Before clicking on the button:

After clicking on the button:

Example 2: This example split the string by number of separators like Comma(, ), equal(=) and colon(:) using multiple .join() and .split() method.

html

<!DOCTYPE html> 
<html> 
    <head> 
        <title> 
            JavaScript | Split a string with
            multiple separators. 
        </title>
    </head>
     
    <body style = "text-align:center;" id = "body"> 
         
        <h1 style = "color:green;" > 
            GeeksForGeeks 
        </h1> 
         
        <p id = "GFG_UP" style = "font-size: 18px; font-weight: bold;">
        </p>
 
         
        <button onclick = "gfg_Run()"> 
            split
        </button>
         
        <p id = "GFG_DOWN" style = "font-size: 25px; font-weight: bold;">
        </p>
 
         
        <script>
            var el_up = document.getElementById("GFG_UP");
            var el_down = document.getElementById("GFG_DOWN");
            var str = "A, computer=science:portal!";
            el_up.innerHTML = str;
             
            function gfg_Run(){ 
                var arr =
                str.split('=').join(', ').split(':').join(', ').split(', ');
                el_down.innerHTML = arr;     
            }
             
        </script> 
    </body> 
</html>                    