选择选项时将文本插入文本区域 [英] insert text into textarea when option selected

问题描述

我需要你的帮助. 当URL包含数字"并且选择了一个值为"= option2"的选择框的选项时，我试图在textarea元素中插入一些文本.

如何检查何时选择了该选项? 选择其他选项时，不应显示要插入的文本. 所以这意味着我需要像onchange这样的事件处理程序.

你有个主意吗?

解决方案

jQuery .change()事件存在:

说明: 将事件处理程序绑定到更改" JavaScript事件，或在元素上触发该事件.

像这样的东西:

http://jsfiddle.net/J4Rkt/

I need your help. I'm trying to insert some text into a textarea-element when the url contains 'number' and an option with value='option2' of a selectbox is selected.

var contentToInsert = 'Text';
if (location.href.indexOf("/number")) {
  if (value of selectbox == 'option2') {
    $("textarea").append(contentToInsert);
  }
}

How do I check when the option is selected? The text to insert shouldn't be shown when another option is selected. So this would mean that I need on event-handler like onchange.

Have you got an idea?

解决方案

jQuery .change() event exists :

Description: Bind an event handler to the "change" JavaScript event, or trigger that event on an element.

Thy with something like that :

http://jsfiddle.net/J4Rkt/

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