Javascript 使用 jQuery Trigger 事件将数据传递给 Change 事件处理程序？
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Pass data using jQuery Trigger event to a Change event handler?
提问by TaylorMac
Is there a way to pass data to a changeevent via jQuery's triggermethod?
有没有办法change通过 jQuery 的trigger方法将数据传递给事件？
The issue here is that a clickevent triggers the upload menu. Once the image is selected, the changeevent is fired, however. The data I passed into the trigger event's second parameter is passed to the click event, not to the change event. In the example below, datais undefined.
这里的问题是click事件触发了上传菜单。但是，一旦选择了图像，change就会触发该事件。我传递给触发器事件的第二个参数的数据是传递给点击事件，而不是更改事件。在下面的例子中，data是未定义的。
Trigger Image Change
触发图像更改
$('.change_main_image').live('click', function() {
$('input[name=photo].change_uploader').trigger('click', ["some string"]);
});
Event Handler
事件处理程序
$('input[name=photo].change_uploader').live('change', function (e, data) {
alert(data); // undefined
//canvas resize and upload script
});
回答by thecodeHyman
.live()is deprecated. Use .on()like this. And changeevent should be triggered, not click
.live()已弃用。.on()像这样使用。而change事件应该被触发，不click
$('.change_main_image').on('click', function() {
$('input[name=photo].change_uploader').trigger('change', [{somedata:true}]);
});
$('input[name=photo].change_uploader').on('change', function (e, data) {
alert(data.somedata);
//canvas resize and upload script
});
