javascript jQuery Uncaught TypeError in $(selector).on()
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jQuery Uncaught TypeError in $(selector).on()
提问by David Gomes
I am getting the following error:
我收到以下错误：
Uncaught TypeError: ((jQuery.event.special[handleObj.origType] || (intermediate value)).handle || handleObj.handler).apply is not a function
This is my code and it's somewhere in between the beforeSendand the successcalls that the error is happening:
这是我的代码，它位于发生错误beforeSend的success调用和调用之间：
$('#main-container').on('click', '#sign-in-btn', function (event) {
var username = $('#username-textbox').val();
var password = $('#password-textbox').val();
$.ajax({
url: '/login',
method: 'POST',
beforeSend: function (xhr) {
xhr.setRequestHeader('Authorization', 'Basic ' + btoa(username + ":" + password));
},
success: function (data) {
}
});
event.preventDefault();
});
I also tried to put inside a $(document).ready(function () { ... }call and I get the exact same error.
我还尝试$(document).ready(function () { ... }拨打电话，但得到了完全相同的错误。
回答by David Gomes
Having the event function return falsefixed it because the error was somewhere during the propagation of the event and if an event returns falsethen event.stopPropagation()is "called".
具有事件函数返回false固定的，因为错误的事件的传播过程中，如果一个事件的回报是什么地方false，然后event.stopPropagation()被“叫”。
