๐พelem.isInside()
Element.prototype.isInside = function(selector){
    return this.closest(selector) !== null
};๐็ฏไพ๏ผ
function $(selector) {
    return document.querySelector(selector)
}
document.body.isInside('html')    // true
document.body.isInside('head')    // false
$('body').isInside('html')        // true
$('#p1').isInside('body')         // trueLast updated
Was this helpful?