JS金额输入的处理
我在text里要输入金额,格式是xx.xx,小数点后必须有两位,如果用户输入的不是数字,便不能显示,如果用户输入的是xx,则自动变成xx.00,如果用户输入的是xx.x则自动变马xx.x0
请指点下,谢谢了
[解决办法]
<INPUT TYPE="text" style="ime-mode:disabled" onkeydown="if(event.repeat)event.returnValue=false;//屏蔽连按" onkeypress="initPrice(this)" onblur="checkinp(this)"> <SCRIPT LANGUAGE="JavaScript"> <!-- function initPrice(oInput){ var num = oInput.value; /* 取光标位置 */ var s = document.selection.createRange(); var r = oInput.createTextRange(); s.setEndPoint( "StartToStart",r); var curP = s.text.length; num = num.substring(0,curP) + String.fromCharCode(event.keyCode) + num.substring(curP); var reg = /^\-?([\d\,]*\.?\d{0,3}?)?$/; // 0~9:48~57; \,:44; \-:45; \.:46; if ( event.keyCode<44 || event.keyCode>57 || event.keyCode==47 || !reg.test(num) ) { if (event.keyCode==46) curP = num.indexOf(".")+1; event.returnValue = false; } else { curP += 1; if (num=="-") return; if (/\.\d{3}$/.test(num)) num = num.substring(0,num.length-1); event.returnValue = false; num = num.replace(/,/g,""); num = parseFloat(num).toFixed(2); var re = /(-?\d+)(\d{3})/; while(re.test(num)){ num = num.replace(re,"$1,$2") } oInput.value=num; if(num.indexOf(".")>0 && curP <= num.indexOf(".") ) curP = num.indexOf("."); } //恢复光标位置 r.moveStart( 'character',curP); r.collapse(true); r.select(); } function checkinp(obj){ var num = obj.value.replace(/,/g,""); num = parseFloat(num).toFixed(2); var re = /(-?\d+)(\d{3})/; while(re.test(num)){ num = num.replace(re,"$1,$2") } obj.value=num; } //--> </SCRIPT>