如何在点击数据列表选项列表时触发事件? [英] How to fire an event on clicking data list option list?

问题描述

我有一个看起来像这样的数据列表:

I have a datalist that looks like :

<datalist id="foodlist">
	
		<option value="one" ></option
		<option value="two" ></option>
		<option value="three" ></option>
	
</datalist>

<input type="text" list="foodlist" autocomplete=true id="inputItem"/>

当用户使用JavaScript在列表中选择某个选项时，我希望触发一个事件.

I want an event to fire when user selects on of the option in the list using JavaScript.

如何实现?

onClick，onChange似乎不起作用.

onClick, onChange does not seem to work.

推荐答案

我知道这有点旧，但是我认为应该在某个地方进行记录.如果您试图从下拉选择中检测输入，而不是单击本身，则可以使用"input"事件并检查传递的事件对象的类型-剪切/粘贴/按键输入将传递"InputEvent"对象，而数据列表选择将传递通用的事件"对象.

I know this is kind of old, but I thought I should document it somewhere. If you're trying to detect input from a dropdown selection rather than a click per se, you can use the "input" event and check the type of the passed event object - cut/paste/keypress input will pass an "InputEvent" object, whereas a datalist selection will pass a generic "Event" object.

var textbox = document.getElementById("inputItem");
textbox.addEventListener("input", function(e){
    
    var isInputEvent = (Object.prototype.toString.call(e).indexOf("InputEvent") > -1);
    
    if(!isInputEvent)
        alert("Selected: " + e.target.value);
    }, false);

<datalist id="foodlist">
	
		<option value="one" ></option>
		<option value="two" ></option>
		<option value="three" ></option>
	
</datalist>

<input type="text" list="foodlist" autocomplete=true id="inputItem"/>

这篇关于如何在点击数据列表选项列表时触发事件?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！