HTML控制文字框只能輸入數字和小數點,並且只能保留小數點後兩位
阿新 • • 發佈:2019-02-05
1.給文字框新增一個onkeyup='clearNoNum(this)'點選事件
2.建立clearNoNum方法
function clearNoNum(obj) { obj.value = obj.value.replace(/[^\d.]/g,""); //清除"數字"和"."以外的字元 obj.value = obj.value.replace(/^\./g,""); //驗證第一個字元是數字而不是 obj.value = obj.value.replace(/\.{2,}/g,"."); //只保留第一個. 清除多餘的 obj.value = obj.value.replace(".","$#$").replace(/\./g,"").replace("$#$","."); obj.value = obj.value.replace(/^(\-)*(\d+)\.(\d\d).*$/,'$1$2.$3'); //只能輸入兩個小數 }
3將金額小寫轉換成大寫
function onlyNumber1(input, n) { var ret = ""; var number =input.value; if (number != ""&& number!=null&&number!="0") { var unit = "仟佰拾億仟佰拾萬仟佰拾元角分", str = ""; number += "00"; var point = number.indexOf('.'); if (point >= 0) { number = number.substring(0, point) + number.substr(point + 1, 2); } unit = unit.substr(unit.length - number.length); for (var i = 0; i < number.length; i++) { str += '零壹貳叄肆伍陸柒捌玖'.charAt(number.charAt(i)) + unit.charAt(i); } ret = str.replace(/零(仟|佰|拾|角)/g, "零").replace(/(零)+/g, "零").replace(/零(萬|億|元)/g, "$1").replace(/(億)萬|(拾)/g, "$1$2").replace(/^元零?|零分/g, "").replace(/元$/g, "元") + "整"; } var a = document.getElementsByName("MoneyCapital")[0].id; document.getElementById(a).value=ret; }