JavaScript | string.replace()
The string.replace() is an inbuilt function in JavaScript which is used to replace a part of the given string with some another string or a regular expression. The original string will remain unchanged.
Syntax:
str.replace(A, B)
Parameters: Here the parameter A is regular expression and B is a string which will replace the content of the given string.
Return Values: It returns a new string with replaced items.
Code #1:
Here the contents of the string GeeksForGeeks will be replaced with gfg.
<script> // Assigning a string var string = 'GeeksForGeeks is a CS portal'; // Calling replace() function var newstring = string.replace(/GeeksForGeeks/, 'gfg'); // Printing replaced string document.write(newstring); </script> |
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Output:
gfg is a CS portal
Code #2:
<script> // Taking a regular expression var re = /GeeksForGeeks/; // Taking a string as input var string = 'GeeksForGeeks is a CS portal'; // Calling replace() function to replace // GeeksForGeeks from string with gfg var newstring = string.replace(re, 'gfg'); // Printing new string with replaced items document.write(newstring); </script> |
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Output:
gfg is a CS portal
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