has attribute in jquery code example

Example 1: jquery check if attribute exists

var attr = $(this).attr('name');

// For some browsers, `attr` is undefined; for others,
// `attr` is false.  Check for both.
if (typeof attr !== typeof undefined && attr !== false) {
    // ...
}

Example 2: how to check element has an attribute js

let result = element.hasAttribute(name);