start : This is required. This is the numeric index used to start point of the sub string. end : This is optional parameter. This is numeric index used to stop the extract of characters. Character on ...

The modern way to replace all instances of a substring in JavaScript is to use the built-in replaceAll function on the string. It returns a new string, leaving the original string unchanged.

substring () In JavaScript, the substring () function is similar to the slice () function in that it is used to extract a section of a string and return it as a new string. The substring () function ...