startswith in javascript code example

Example 1: js start with

const str = 'Linux is great';
console.log(str.startsWith('Linux is'));// true
console.log(str.startsWith('Windows is'));// false
console.log(str.startsWith('ux is', 3));// true

Example 2: js startswith

var str = "Hello world, welcome to the universe.";
var n = str.startsWith("Hello");

Example 3: javascript word start with

const str = "Saturday night plans";
const res = str.startsWith("Sat");
console.log(res); //> true

Example 4: js startswith

const str1 = 'Saturday night plans';

console.log(str1.startsWith('Sat'));
// expected output: true

console.log(str1.startsWith('Sat', 3));
// expected output: false

Example 5: javascript string starts with

//checks if a string starts with a word
function startsWith(str, word) {
    return str.lastIndexOf(word, 0) === 0;
}
startsWith("Welcome to earth.","Welcome"); //true

Example 6: startswith in javascript

if (!String.prototype.startsWith) {
    Object.defineProperty(String.prototype, 'startsWith', {
        value: function(search, rawPos) {
            var pos = rawPos > 0 ? rawPos|0 : 0;
            return this.substring(pos, pos + search.length) === search;
        }
    });
}