Question from the Javascript test

var reversedText = text.split('').reverse().join('');

for(var i=0, temp, text=text.split(''); i < Math.ceil(text.length/ 2); i++) {
    temp = text[i];
    text[i] = text[text.length - i - 1];
    text[text.length - i - 1] = temp;
}
var reversedText= text.join('');

var reversedText= text.split().reverse().join();

for(var i = 0, temp, text = text.split(''); i < text.length; i++) {
    temp = text[text.length - i - 1];
    text[text.length - i - 1] = text[i];
    text[i] = temp;
}
var reversedText = text.join('');