Example 1: Replace All Occurrence of String Using RegEx
Output
Mr blue has a blue house and a blue car
In the above program, a regex expression is used as the first parameter inside the replace() method.
/g refers to global (that replacement is done across the whole string) and /i refers to case-insensitive.
The replace() method takes the string that you want to replace as the first parameter and the string you want to replace with as the second parameter.
Example 2: Replace All Occurrence of String Using built-in Method
Output
Mr blue has a blue house and a blue car
In the above program, the built-in split() and join() method is used to replace all the occurrences of the string.
- The string is split into individual array elements using the
split()method.
Here,string.split('red')gives ["Mr ", " has a ", " house and a ", " car"] by splitting the string. - The array elements are joined into a single string using the
join()method.
Here,reverseArray.join('blue')gives Mr blue has a blue house and a blue car by joining the array elements.