JS string trim () using the example _javascript tips

Example one:

Example two:

Clear both sides of the space String.prototype.trim = function () {return this.replace (^\s*) | ( 
\s*$)/g, ""); 
}; 
  Merges multiple blanks into a blank String.prototype.ResetBlank = function () {var regEx =/\s+/g; 
Return This.replace (RegEx, '); 
 
}; 
  Keep number String.prototype.GetNum = function () {var regEx =/[^\d]/g; 
Return This.replace (RegEx, '); 
 
}; 
  Keep Chinese String.prototype.GetCN = function () {var regEx =/[^\u4e00-\u9fa5\uf900-\ufa2d]/g; 
Return This.replace (RegEx, '); 
 
}; String converted to Number String.prototype.ToInt = function () {return isNaN (the parseint (this))? This.tostring (): parseint (thi 
s); 
 
}; 
  Get byte length String.prototype.GetLen = function () {var regEx =/^[\u4e00-\u9fa5\uf900-\ufa2d]+$/; 
  if (Regex.test (this)) {return this.length * 2; 
    else {var omatches = This.match (/[\x00-\xff]/g); 
    var olength = this.length * 2-OMATCHES.LENGTH; 
  return olength; 
 
} 
}; Get file Full Name String.prototype.GetFileName = function () {var regEx =/^.*\/([^\/\?] *).*$/; 
Return This.replace (regEx, ' $ '); 
 
}; Gets the file name extension String.prototype.GetExtensionName = function () {var regEx =/^.*\/[^\/]* (\.[ ^\.\?] 
  *).*$/; 
Return This.replace (regEx, ' $ '); 
 
}; Replace All String.prototype.replaceAll = function (Reallydo, replacewith, ignoreCase) {if (!) RegExp.prototype.isPrototypeOf (Reallydo)) {return this.replace (new RegExp Reallydo, ignoreCase? 
  "GI": "G")), replacewith); 
  else {return This.replace (Reallydo, replacewith); 
} 
}; 
  format string add by Liu Jingning 2010-12-09 String.Format = function () {if (arguments.length = = 0) {return '; 
  } if (arguments.length = = 1) {return arguments[0]; var reg =/{(\d+)?} 
  /g; 
  var args = arguments; 
  var result = Arguments[0].replace (Reg, Function ($, $) {return Args[parseint ($) + 1]; 
  }); 
return result; 
 
}; 
  Digital complement 0 Number.prototype.LenWithZero = function (ocount) {var strText = this.tostring (); while (Strtext.length < Ocount) {StrteXT = ' 0 ' + strText; 
return strText; 
 
}; 
Unicode Restore Number.prototype.ChrW = function () {return string.fromcharcode (this); 
 
}; 
  Numeric arrays are sorted from small to large Array.prototype.Min2Max = function () {var ovalue; 
        for (var i = 0; i < this.length. i++) {for (var j = 0; J <= i; j +) {if (This[i] < this[j]) { 
        Ovalue = This[i]; 
        This[i] = This[j]; 
      THIS[J] = Ovalue; 
}} return this; 
 
}; 
  The numeric array is sorted from large to small Array.prototype.Max2Min = function () {var ovalue; 
        for (var i = 0; i < this.length. i++) {for (var j = 0; J <= i; j +) {if (This[i] > This[j]) { 
        Ovalue = This[i]; 
        This[i] = This[j]; 
      THIS[J] = Ovalue; 
}} return this; 
 
}; 
  Gets the maximum item Array.prototype.GetMax = function () {var ovalue = 0 in a numeric array; 
    for (var i = 0; i < this.length i++) {if (This[i] > Ovalue) {ovalue = this[i]; 
} return ovalue; 
 
}; Get the smallest in a numeric arrayItem Array.prototype.GetMin = function () {var ovalue = 0; 
    for (var i = 0; i < this.length i++) {if (This[i] < Ovalue) {ovalue = this[i]; 
} return ovalue; 
 
}; 
  Gets the Chinese form of the current time Date.prototype.GetCNDate = function () {var odatetext = '; Odatetext + = This.getfullyear (). Lenwithzero (4) + new number (24180). 
  ChrW (); Odatetext + = This.getmonth (). Lenwithzero (2) + new number (26376). 
  ChrW (); Odatetext + = This.getdate (). Lenwithzero (2) + new number (26085). 
  ChrW (); Odatetext + = This.gethours (). Lenwithzero (2) + new number (26102). 
  ChrW (); Odatetext + = This.getminutes (). Lenwithzero (2) + new number (20998). 
  ChrW (); Odatetext + = This.getseconds (). Lenwithzero (2) + new number (31186). 
  ChrW (); Odatetext + = new Number (32). ChrW () + new number (32). ChrW () + new number (26143). ChrW () + new number (26399). ChrW () + new String (' 26085199682010819977222352011620845 '). substr (This.getday () * 5, 5). ToInt (). 
  ChrW (); 
return odatetext; 
}; Extended Date Format Date.prototypE.format = function (Format) {var o = {"m+": This.getmonth () + 1,//month "d+": this.getdate (),//day "h+": this.gethours ()% 12 = 0? 12:this.gethours ()% 12,//h "h+": this.gethours (),//Hour "m+": this.getminutes (),//min "s+" ": This.getseconds (),//sec" q+ ": Math.floor (This.getmonth () + 3)/3),//Quarter" S ": This.getmilliseconds ( 
  )//MS};  var week = {"0": "\u65e5", "1": "\u4e00", "2": "\u4e8c", "3": "\u4e09", "4": "\u56db", "5": 
  "\u4e94", "6": "\U516D"}; if (/(y+)/.test (format)) {format = Format.replace (regexp.$1, (this.getfullyear () + ""). substr (4-regexp.$1.length)) 
  ; } if (/(e+)/.test (format)) {format = Format.replace (regexp.$1, (Regexp.$1.length > 1)? (Regexp.$1.length > 2?) 
  "\u661f\u671f": "\u5468"): "") + week[this.getday () + ""]); For (var k in O) {if (New RegExp ("+ K +")). Test (format) {format = forMat.replace (regexp.$1, (regexp.$1.length = 1)? 
    (O[k]): (("+ o[k]"). substr (("" + o[k). length)); 
} return format; } Date.prototype.Diff = function (interval, objdate) {//if parameter is insufficient or objdate is not a date type return undefined if (arguments.length ; 2 | | 
  Objdate.constructor!= Date) {return undefined;} 
      Switch (interval) {//seconds difference case ' s ': Return parseint ((objdate-this)/1000); 
      Calculate the difference case ' n ': Return parseint ((objdate-this)/60000); 
      Calculate time difference case ' h ': Return parseint ((objdate-this)/3600000); 
      Calculate the day difference case ' d ': Return parseint ((objdate-this)/86400000); 
      Calculates the week difference case ' W ': Return parseint ((objdate-this)/(86400000 * 7)); Calculate month difference case ' m ': Return (Objdate.getmonth () + 1) + ((Objdate.getfullyear ()-this.getfullyear ())-(This.getmon 
      Th () + 1); 
      Calculate the year difference case ' y ': return objdate.getfullyear ()-this.getfullyear (); Input error Default:return undefined; 
 
} 
}; 
  Detection is null Object.prototype.IsNullOrEmpty = function () {var obj = this; 
  var flag = false; 
  if (obj = null | | | obj = undefined | | typeof (obj) = = ' undefined ' | | | obj = = ') {flag = true; 
    else if (typeof (obj) = = ' string ') {obj = Obj.trim (); 
    if (obj = =) {//is empty flag = true; 
      else {//is not null obj = Obj.touppercase (); 
      if (obj = = ' NULL ' | | | obj = ' UNDEFINED ' | | | obj = = ' {} ') {flag = true; 
  }} else {flag = false;
 return flag;

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