我怎么知道用户是否在选择框中选择了相同的项目

Question

I have a select box that needs to act even if the user selects the currently selected item. I have used onChange (via JQuery) but it doesn't fire if the same item is selected because it hasn't changed.

Is this even possible?

Answer 1

I'm not sure i understand your question clearly cause of my English. You want to know when a checkbox is clicked if it is already checked you want to fire a function. If i'm right then you can do it in many ways. Eg If you have 2 classes for your checkbox checked or unchecked you can look if that checkbox got "checked" class with .hasClass or you can store index of a checkbox in an array when it is clicked, and every click on a checkbox you can search array if that array has index of that checkbox. If result is true, you fire your function.

Answer 2

You can try in each of your select box to include the onclick event and call your desired function when that happens. Or you can use the onblur event in your element and fire your function when that happens.