jQuery警报不适用于onkeyup事件

Question

I want to get an alert after three characters. What's wrong with my code.

Html

<input type="text" id="name"/>

javascript

$('#name').onkeyup(function(){
    var info = $('#name').val();
    if(info.length >3){alert('thank you');}
});

Answer 1

Use keyup event, there is no onkeyup event

$('#name').keyup(function(){
    var info = $('#name').val();
    if(info.length >3){alert('thank you');}
});