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文字

返回值:jQuerychange([[data],fn])

概述

当元素的值发生改变时,会发生 change 事件。

该事件仅适用于文本域(text field),以及 textarea 和 select 元素。当用于 select 元素时,change 事件会在选择某个选项时发生。当用于 text field 或 text area 时,该事件会在元素失去焦点时发生。

参数

fnFunctionV1.0

在每一个匹配元素的change事件中绑定的处理函数。

[data],fnString,FunctionV1.4.3

data:change([Data], fn) 可传入data供函数fn处理。

fn:在每一个匹配元素的change事件中绑定的处理函数。

示例

描述:

触发被选元素的 change 事件。

jQuery 代码:
$(selector).change();

描述:

给所有的文本框增加输入验证

jQuery 代码:
$("input[type='text']").change( function() {
  // 这里可以写些验证代码
});
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