showtip.js

无刷新技术AJAX,就是在不刷新网页的情况下更新网站内容

//Code by Jarry.Li ,CopyRight @ Jiarry.126.com,All right reserved !
//homepage : http://Jiarry.blogchina.com  
//E-mail:[e-mail]
//使用方法:
/***************/
String.prototype.trim = function()
{ return this.replace(/(^\s*)|(\s*$)/g, "");}
function $(id){
	var o=document.getElementById(id);
	if((o==null || typeof(o)=="undefined") && document.all)o=document.all.id;
	return o;
}


function reshow(obj){
	obj=$(obj);
	obj.src=(obj.src+"?d="+new Date().getTime());	
}

function showtip(msg){  var t=$("tip"); t.innerHTML=msg;t.className="tip";document.form1.tj.disabled=false;}   
//clear tips;
var tm=0;var start;
function closeTip(){
		 tm++;//超时关闭提示;
		 start = setTimeout(closeTip,200);
		  if(tm >= 5){
				clearTimeout(start);
		  	showtip(" ");tm = 0;
		    $("tip").className="";
		}
}

function cleanBR() {
	var area = document.getElementsByTagName('TEXTAREA');
	for (var i=0; i<area.length; i++) {
		area[i].value = area[i].value.replace(/<br \/>/ig, '');
		area[i].value = area[i].value.replace(/(\xA0\x20){4}/ig, '\t');
		area[i].value = area[i].value.replace(/\xA0\x20\xA0/ig, '   ');
		area[i].value = area[i].value.replace(/\xA0\xA0/ig, '  ');
	}
}

function countLength(maxLen,obj)
{
 var dLen = 0,sLen = 0, msg = "";
 for(i=0; i< obj.length; i++ ){
   if(obj.charCodeAt(i) > "0" && obj.charCodeAt(i) < "128"){
     sLen+=1;
     }else{
      dLen+=2;
   }
 }
 totalLen = sLen+dLen;
 overLen = totalLen-maxLen;
 if( totalLen > maxLen){
     msg = ("最多" + maxLen + "字符( "+ (maxLen/2) +"个汉字)，您超出了" + overLen + "个字符，请修改。");
  }
  return msg;
}

//将ip最后一位变成*号返回
function setIP(ipAddr){
   var newip = "";
   var dotcount = 0;
   var len = ipAddr.length;
   for (i =0 ;i < len ;i++){
       if(ipAddr.charAt(i) == ".")
		   dotcount +=1;
   }

   if( dotcount < 3 ){
      alert("请输入正确ip地址。");
	  return newip;
   }
   var last = ipAddr.lastIndexOf(".");
   newip = ipAddr.substring( 0 ,last ) + ".*";
   //alert( newip );
   return newip;
}