用户在下拉列表中进行选择时的 Jquery 事件
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Jquery event when user makes selection in dropdown
提问by Nate Pet
I have a drop down list. In Jquery what is the event I would use when the user makes a selection.
我有一个下拉列表。在 Jquery 中,当用户进行选择时我会使用什么事件。
The id of the dropdown is drp1
下拉列表的id是drp1
I tried the following but did not work:
我尝试了以下但没有奏效:
$("#ddrp1").SelectChanged(SelectionItem);
回答by James Hill
Use the change()
event:
使用change()
事件:
$("#ddrp1").change(function() {
// Pure JS
var selectedVal = this.value;
var selectedText = this.options[this.selectedIndex].text;
// jQuery
var selectedVal = $(this).find(':selected').val();
var selectedText = $(this).find(':selected').text();
});
In jQuery 1.7, you can use .on()
在 jQuery 1.7 中,您可以使用 .on()
$("#ddrp1").on("change", function() {
// Pure JS
var selectedVal = this.value;
var selectedText = this.options[this.selectedIndex].text;
// jQuery
var selectedVal = $(this).find(':selected').val();
var selectedText = $(this).find(':selected').text();
}????);?
Here's a working jsFiddleusing on()
回答by Selvakumar Arumugam
What you want is onchange
event which can be written as
你想要的是onchange
事件,它可以写成
$("#ddrp1").change (function () {
});
回答by ShankarSangoli
Use jQuery change
event handler.
使用 jQuerychange
事件处理程序。
$("#ddrp1").change(function(){
//selection changed
alert(this.value);//this will give the selected option's value
alert($(this).find(':selected').text());//this will give the selected option's text
});
Alternative way to bind change
event handler is.
绑定change
事件处理程序的替代方法是。
$("#ddrp1").bind('change', function(){
});
回答by Dulith De Costa
You need to use change()
.
您需要使用change()
.
jQuery change event occurs when the value of an element is changed.
jQuery change 事件发生在元素的值改变时。
This event is limited to input
elements, textarea
boxes and select
elements.
此事件仅限于input
元素、textarea
框和select
元素。
$("#ddrp1").change (function () {
var getText = $(this).find(':selected').text();
alert (getText); // show the text value of the selected element ...
});