remove a substring from a string in javascript

To remove a substring from a string in javascript, you can use the replace() method with regular expressions. The regular expression pattern can be built using the substring you want to remove and the global flag to replace all occurrences of the substring.

Here's an example code snippet that replaces all occurrences of the substring "fox" with an empty string:

index.tsx
const originalString = "The quick brown fox jumps over the lazy dog";
const substringToRemove = "fox";

const pattern = new RegExp(substringToRemove, "g");
const newString = originalString.replace(pattern, "");

console.log(newString); // "The quick brown  jumps over the lazy dog"
282 chars
8 lines

In this example, the replace() method is called on the original string with two parameters: the regular expression pattern created using the substring to remove and the global flag, and an empty string as the replacement.

This effectively removes all occurrences of the substring from the original string and assigns the resulting string to the newString variable.

Note that the replace() method returns a new string and does not modify the original string.