util.js

一个javascript写的自动生成代码的东东

function centerWindow(w,h){
	window.moveTo((screen.width-w)/2,(screen.height-h)/2);
}/*

==================================================================

数组类型定义

==================================================================

*/

function array(size){
	this.isArray=true;
	this.length=size;
	for(i=0;i<size;i++){
		this[i]=0;
	}
}
array.prototype.add=function(number){
	this.length+=1;
	this[this.length-1]=number;
}
array.prototype.clear=function(){
	this.length=0;
}
array.prototype.toString=function(){
	var ret="[";
	for(i=0;i<this.length;i++){
		if(i==0){
			ret+=this[i];
		}else{
			ret+=","+this[i];
		}
	}
	ret+="]";
	return ret;
}


/*

==================================================================

LTrim(string):去除左边的空格

==================================================================

*/


function LTrim(str)

{

    var whitespace = new String(" \t\n\r");

    var s = new String(str);

    

    if (whitespace.indexOf(s.charAt(0)) != -1)

    {

        var j=0, i = s.length;

        while (j < i && whitespace.indexOf(s.charAt(j)) != -1)

        {

            j++;

        }

        s = s.substring(j, i);

    }

    return s;

}

 

/*

==================================================================

RTrim(string):去除右边的空格

==================================================================

*/

function RTrim(str)

{

    var whitespace = new String(" \t\n\r");

    var s = new String(str);

 

    if (whitespace.indexOf(s.charAt(s.length-1)) != -1)

    {

        var i = s.length - 1;

        while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)

        {

            i--;

        }

        s = s.substring(0, i+1);

    }

    return s;

}

 

/*

==================================================================

Trim(string):去除前后空格

==================================================================

*/

function Trim(str)

{

    return RTrim(LTrim(str));

}


function getElement(name){
	var objs=getElements(name);
	if(objs.length>0){
		return objs[0];
	}else{
		return null;
	}
}

function getElements(name){
	return document.getElementsByName(name);
}




 function getCookieVal (offset)
  {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
    endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
  }
  function GetCookie (name) 

 {
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
      return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break; 
  }
  return null;
  }
  function SetCookie (name, value)
  {
  var argv = SetCookie.arguments;
  var argc = SetCookie.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  document.cookie = name + "=" + escape (value) +
    ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
    ((path == null) ? "" : ("; path=" + path)) +
    ((domain == null) ? "" : ("; domain=" + domain)) +
    ((secure == true) ? "; secure" : "");
  }
  function setLastlastVisitCookie ()
  {
  var rightNow = new Date();
  var expdate = new Date();
  expdate.setTime (expdate.getTime() + 1 * (24 * 60 * 60 * 1000)); //+1 day
  SetCookie ("lastVisit", rightNow.getTime(), expdate, "/");
  }
  function ResetCookie()
  {
    SetCookie("lastVisit", 0, null, "/");
  }