jquery uses $(element).is() to determine the obtained tagName_jquery

If you want to get the tagName and then make a judgment, you can use jquery $(element).is() to achieve it.

If you want to get the tagName and then make a judgment, it will be more convenient to use the following code directly:

$(element).is('input')

If you want to get the tag and use it elsewhere, you can use the code:

$(element)[0].tagName
或：
$(element).get(0).tagName