javascript string starts with

var str = "Hello world, welcome to the universe.";
var n = str.startsWith("Hello");const str = "Saturday night plans";
const res = str.startsWith("Sat");
console.log(res); //> trueconst str1 = 'Saturday night plans';

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

console.log(str1.startsWith('Sat', 3));
// expected output: false
//checks if a string starts with a word
function startsWith(str, word) {
    return str.lastIndexOf(word, 0) === 0;
}
startsWith("Welcome to earth.","Welcome"); //true[[ $a == z* ]]   # True if $a starts with a "z" (wildcard matching).
[[ $a == "z*" ]] # True if $a is equal to z* (literal matching).

if [[ "$HOST" =~ ^user.* ]]; then
    echo "yes"
fi

if [[ "$HOST" =~ ^user.*|^host1 ]]; then
    echo "yes"
fi
const s = 'I am going to become a FULL STACK JS Dev with Coderslang';

console.log(s.startsWith('I am'));             // true
console.log(s.startsWith('You are'));          // false