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w3big.com
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> <script src="http://cdn.static.w3big.com/libs/jquery/1.10.2/jquery.min.js"> </script> <script> $(document).ready(function(){ $("button").click(function(){ $("input").change(); }); }); </script> </head> <body> <p>点击按钮触发 change 事件 (即使元素没有改变)。</p> <button>输入框中触发 change 事件</button> <p>输入你的名字: <input value="w3big" onchange="alert(this.value)" type="text"></p> </body> </html>