Index.js:1136 Uncaught TypeError: test[0].is is not a function

1

index.js:1136 Uncaught TypeError: test[0].is is not a function

Why not can call an var include id with [0] index?

var test = $('#id');

test[0].is(':hover');

Thanks!

3

You have to call the jQuery method on the jQuery object, it’s not on the element.

$('#id').is(':hover')
1 Like
4

Can you tell me or explain please where to use [0] index? Like i saw for form $('#id')[0].reset(); is have set after the id? But why? Why need for reset an 0 index? And others way to use?

Like I know is index in an array or something but why use in a id as have only one id so there no more? So not valid to use two id with same name then why use index?

Thanks!

5

If you want to get to the actual element or one of the native properties or methods.

console.log($('#test')[0].id)
// the element id attribute value

You can try logging it out to the console to better understand what $(‘selector’) give you back.

console.log($('#test'))

k.fn.init [div#test]
0: div#test // element, twirl it open to see native properties and methods
length: 1
__proto__: Object(0) // jQuery methods, twirl it open to see them