Creating a boolean function in Javascript

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I trying to create a bool Function in javascript

but the bool is not working, it always gives me true

this code is loading the id of youtube videos and see if it exists in youtube by checking image availabality.

function CheckPic() {
    var TheVideoID = document.getElementsByClassName('VI');

    const Images = [];

    for (var i = 0; i < TheVideoID.length; i++) {
        getMeta('http://img.youtube.com/vi/' + TheVideoID[i] + '/mqdefault.jpg', (err, img) => {
            Images[i] = img.naturalWidth;
        });
    }

    alert(Images.length);

    for (var i = 0; i < Images.length; i++) {
        if (Images[i] == 120) {
            return false;
        }
    }
    return true;
}

using like this

if (CheckPic())
{

}