Available on: InDom

Checks if the underlying element has an attribute.

Parameters:

Returns: {boolean} - true if the attribute exists, false otherwise.

Throws:

Examples:

const img = $n('<img src="example-star.png" width="50" height="50">');

// helper: return attr value if the attribute exists or 'no alt' if doesn't
const getImgAlt = () => img.hasAttr('alt') ? img.getAttr('alt') : 'no alt';

console.log(`img alt:${getImgAlt()}`); // no alt 

img.setAttr('alt','example image'); 
console.log(`img alt:${getImgAlt()}`); // example image

img.removeAttr('alt');
console.log(`img alt:${getImgAlt()}`); // no alt