How to useRegular Expressions in Javascript

Regular expressions provide a powerful way to search for patterns within strings. We can use a regular expression to match the portion of the string after the last slash.

Example:

JavaScript
let str = "folder_1/folder_2/file.html";

function getStringAfterLastSlash(str) {
    // Match any characters after the last slash
    const regex = /[^/]+$/;
    // Extract the matched portion using regex
    const match = str.match(regex);
    // Return the matched portion
    return match ? match[0] : "";
}

console.log(getStringAfterLastSlash(str));

Output
file.html




How to get value of a string after last slash in JavaScript?

The task is to get the string after a specific character(‘/’). Here are a few of the most used techniques discussed. We are going to use JavaScript. 

Below are the approaches used to get the value of a string after the last slash in JavaScript:

Table of Content

  • Approach 1: Using .split() method and .length property
  • Approach 2: Using .lastIndexOf(str) method and .substring() method
  • Approach 3: Using .split() method and pop() method
  • Approach 4: Using Regular Expressions

Similar Reads

Approach 1: Using .split() method and .length property

Split the string by .split() method and put it in a variable(array).Use the .length property to get the length of the array.From the array return the element at index = length-1....

Approach 2: Using .lastIndexOf(str) method and .substring() method

First, find the last index of (‘/’) using .lastIndexOf(str) method.Use the .substring() method to get access the string after the last slash....

Approach 3: Using .split() method and pop() method

Split the string by .split() method pop the variable by using pop() method...

Approach 4: Using Regular Expressions

Regular expressions provide a powerful way to search for patterns within strings. We can use a regular expression to match the portion of the string after the last slash....

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