设立文本框只允许输入数字

设置文本框只允许输入数字

function onlyNum(e){ // 只允许输入数字var isie = (document.all) ? true:false;var key;var ev;if(isie){// IEkeyCode = window.event.keyCode;ev = window.event;}else{ // 火狐keyCode = e.which;ev = e;}if(!(keyCode==46)&&!(keyCode==8)&&!(keyCode==37)&&!(keyCode==39)&&!(keyCode==36)&&!(keyCode==35)&&!(keyCode==9)){// 35 36 end home 46 delete 37 39 左右 8 退格 9 Tabif(!((keyCode>=48&&keyCode<=57)||(keyCode>=96&&keyCode<=105))){if(isie){ev.returnValue=false;}else{ev.preventDefault();}}}}