jQuery-更改输入文本 [英] jQuery - on change input text

问题描述

我正在尝试创建一个将在text input field的值更改时执行的函数.单击表单元格(而不是在keyup上)或粘贴时，该字段的值将更改.我这样尝试过:

I am trying to make a function which will execute when the value of a text input field is changed. The value of the field changes when a table cell is clicked, not on keyup, nor paste. I tried it like this:

$("#kat").change(function(){ 
    alert("Hello");
});

我有文本字段:

<input type="text" id="kat" value="0"/>

但是它不起作用.有什么帮助吗?

but it isn't working. Any help?

推荐答案

这是来自jQuery文档页面上的评论:

This is from a comment on the jQuery documentation page:

在较旧的HTML5之前的浏览器中，键"绝对是您想要的.

In older, pre-HTML5 browsers, "keyup" is definitely what you're looking for.

在HTML5中，有一个新事件"input"，其行为与您似乎认为"change"应该发生的行为完全相同，因为一旦按下键以将信息输入表单，该事件就会触发.

In HTML5 there is a new event, "input", which behaves exactly like you seem to think "change" should have behaved - in that it fires as soon as a key is pressed to enter information into a form.

$('element').bind('input'，function);

$('element').bind('input',function);

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