javascript ensure string at beginning code example
Example 1: 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 2: 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