Check if URL starts with “http”

Given a URL as a string, check if the URL starts with the prefix string http using JavaScript.

Solution

To check if a string starts with a specific prefix string using JavaScript, we can use String.startsWith() method. Call startsWith() method on the string, and pass the prefix string 'http' as argument.

startsWith() returns true if the string starts with the given prefix string 'http', or false otherwise.

Program

1. Given string is str and prefix string is 'http'. Check if string str starts with the prefix string.

url = "hello world";
prefix = "http";

if ( url.startsWith(prefix) ) {
    console.log('url starts with http');
} else {
    console.log('url does not start with http');
}