简单的限制输入数字的JSinput namefrequency onkeypressevent.returnValuecheckCode()/ functio
简单的限制输入数字的JS
<input name='frequency' onkeypress="event.returnValue=checkCode();"/> function checkCode(){return ((event.keyCode>=48)&&(event.keyCode<=57));} 简单的限制输入数字的JS
<input name='frequency' onkeypress="event.returnValue=checkCode();"/> function checkCode(){return ((event.keyCode>=48)&&(event.keyCode<=57));}