Element.hasAttribute()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
El método Elemento.hasAttribute()
devuelve un valor Booleano indicando si el elemento tiene el atributo especificado o no.
Sintaxis
Ejemplo
js
var foo = document.getElementById("foo");
if (foo.hasAttribute("bar")) {
// hacer algo
}
Polyfill
js
(function (prototype) {
prototype.hasAttribute =
prototype.hasAttribute ||
function (name) {
return !!(this.attributes[name] && this.attributes[name].specified);
};
})(Element.prototype);
Especificaciones
Specification |
---|
DOM Standard # ref-for-dom-element-hasattribute① |
Compatibilidad con navegadores
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