jQuery/JS监听input输入框值变化实例

input事件：

onchange：

1、要在 input 失去焦点的时候才会触发；

2、在输入框内容变化的时候不会触发change，当鼠标在其他地方点一下才会触发；

3、onchange event 所有主要浏览器都支持；

4、onchange 属性可以使用于：, 。</p> <pre class="brush:js;"> </head> <body> 输入你的密码: <input type="text" id="password" onchange="change()"> </body></pre> <p><strong>oninput:</strong></p> <p>1、在用户输入时触发，它是在元素值发生变化时立即触发；</p> <p>2、该事件在 <input> 或 <textarea> 元素的值发生改变时触发。</p> <p>3、缺陷：从脚本中修改值不会触发事件。从浏览器下拉提示框里选取值时不会触发。IE9 以下不支持，所以IE9以下可用onpropertychange 事件代替。</p> <pre class="brush:js;"> JS: <input type="text" id="password" oninput="change()"></pre> <pre class="brush:js;"> jQuery： $("#password").on('input propertychange', change);</pre> <p><strong>onpropertychange:</strong></p> <p>1、会实时触发，会在元素的属性改变时就触发事件。当元素disable=true时不会触发</p> <p>2、缺陷：只在IE 下支持，其他浏览器不支持，用oninput来解决。</p> <pre class="brush:js;"> <input type="text" id="password" oninput="onpropertychange()"></pre> <p><strong>jQuery:</strong></p> <pre class="brush:js;"> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>RunJS</title> </head> <body> <input type="text" id="password" autoComplete='off'> 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