Answers for "js string starts wth"

js startswith

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

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;
        }
    });
}