๐พelem.isHeading
// check if an element is a heading (h1 ~ h6)
Object.defineProperty(Element.prototype, 'isHeading', {
get(){ return this.matches("h1,h2,h3,h4,h5,h6"); }
});
๐็ฏไพ๏ผ
function $(selector) {
return document.querySelector(selector)
}
$('h1').isHeading, // true
$('#p1').isHeading, // false
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