fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"> </script> <script> $(document).ready(function(){ $("input").keydown(function(){ $("input").css("background-color","lightblue"); }); $("input").keyup(function(){ $("input").css("background-color","lavender"); }); $("#btn1").click(function(){ $("input").keydown(); }); $("#btn2").click(function(){ $("input").keyup(); }); }); </script> </head> <body> <input type="text"> <p><button id="btn1">Trigger keydown event for input field</button></p> <p><button id="btn2">Trigger keyup event for input field</button></p> </body> </html>
运行结果