js常見input校正

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//校正輸入價格等，保留2位小數function clearNoNum(obj){    obj.onkeyup = function(event){      var e = event || window.event;      if (e.keyCode == 37 || e.keyCode == 39) {//允許輸入左右方向鍵        return;      }      if(((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105))) {          return;      }      obj.value = obj.value.replace(/[^\d.]/g,"");  //清除“數字”和“.”以外的字元         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.$3‘);//只能輸入兩個小數         if(obj.value.indexOf(".")< 0 && obj.value !=""){//以上已經過濾，此處控制的是如果沒有小數點，首位不能為類似於 01、02的金額         obj.value= parseFloat(obj.value);        }              };}//校正輸入整數不包括負整數function clearNoInteger(obj){    obj.onkeyup = function(event){          var e = event || window.event;          if (e.keyCode == 37 || e.keyCode == 39) {//允許輸入左右方向鍵            return;          }          if(!((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105))) {              obj.value = obj.value.replace(/[^\d]/g,"");//清除“數字”和“.”以外的字元               var numarr = obj.value.split(‘‘);              if (numarr[0] == 0) {                  var j = 0;                  for (var i=0;i <numarr.length; i++) {                      if (numarr[i] != 0) {                          j = i;                          break;                      }                                        }                  obj.value = obj.value.substring(j,obj.value.length)              }                        }                    if (((event.keyCode>=48&&event.keyCode<=57)||(event.keyCode>=96&&event.keyCode<=105))) {              var numarr = obj.value.split(‘‘);              if (numarr[0] == 0) {                  var j = 0;                  for (var i=0;i <numarr.length; i++) {                      if (numarr[i] != 0) {                          j = i;                          break;                      }                                        }                  obj.value = obj.value.substring(j,obj.value.length)              }              }   };}function isPositiveNum(s){//是否為正整數      var re = /^[0-9]*[1-9][0-9]*$/ ;      return re.test(s)  }function validate(num){//是否為正數  var reg = /^\d+(?=\.{0,1}\d+$|$)/  if(reg.test(num)) return true;  return false ;  }function stripscript(s) {//過濾特殊字元    var pattern = new RegExp("[`[email protected]#$^&*()=|{}‘:;‘,\\[\\].<>/?~！@#￥……&*（）——|{}【】‘；：”“‘。，、？]")    var rs = "";    for (var i = 0; i < s.length; i++) {        rs = rs + s.substr(i, 1).replace(pattern, ‘‘);    }    return rs;}function containSpecial(s) { //判斷是否包含非法字元          var containSpecial = RegExp(/[(\ )(\~)(\!)(\@)(\￥)(\#)(\$)(\%)(\^)(\&)(\*)(\()(\))(\-)(\_)(\+)(\=)(\[)(\])(\{)(\})(\|)(\\)(\;)(\:)(\‘)(\")(\,)(\.)(\/)(\<)(\>)(\?)(\)]+/);          return (containSpecial.test(s));      }function getByteLen(val) {//計算字元長度(中文算2個字元，英文算1個字元）    var len = 0;    for (var i = 0; i < val.length; i++) {         var a = val.charAt(i);         if (a.match(/[^\x00-\xff]/ig) != null)         {            len += 2;        }        else        {            len += 1;        }    }    return len;}//產生對應隨機數function GetRandomNum(Min,Max,type){       var Range = Max - Min;    var Rand = Math.random();    var num = (Min + Math.round(Rand * Range));    if(type = 2){        num = parseFloat(Math.random().toFixed(1)) + parseFloat(num);    }else if(type == 3){        num = parseFloat(Math.random().toFixed(2)) + parseFloat(num);    }    return num;   }//去除前後空格function trim(s){    return s.replace(/(^\s*)|(\s*$)/g, "");}//擷取隨機數function getRandom() {   return (((1+Math.random())*0x10000)|0).toString(16).substring(1);}//產生隨機數idfunction getId() {   return (getRandom()+getRandom()+"-"+getRandom()+"-"+getRandom()+"-"+getRandom()+"-"+getRandom()+getRandom()+getRandom());}//對Date的擴充，將 Date 轉化為指定格式的String//月(M)、日(d)、小時(h)、分(m)、秒(s)、季度(q) 可以用 1-2 個預留位置， //年(y)可以用 1-4 個預留位置，毫秒(S)只能用 1 個預留位置(是 1-3 位的數字) //例子： //(new Date()).Format("yyyy-MM-dd hh:mm:ss.S") ==> 2006-07-02 08:09:04.423 //(new Date()).Format("yyyy-M-d h:m:s.S")      ==> 2006-7-2 8:9:4.18 Date.prototype.Format = function (fmt) { //author: meizz  var o = {     "M+": this.getMonth() + 1, //月份      "d+": this.getDate(), //日      "h+": this.getHours(), //小時      "m+": this.getMinutes(), //分      "s+": this.getSeconds(), //秒      "q+": Math.floor((this.getMonth() + 3) / 3), //季度      "S": this.getMilliseconds() //毫秒  }; if (/(y+)/.test(fmt)) fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length)); for (var k in o) if (new RegExp("(" + k + ")").test(fmt)) fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length))); return fmt;}

 

js常見input校正