js中怎样将gb2312的字符转换成utf-8?? 是不是有类似php的iconv函数?? 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 http://www.waptopc.com/news_display.asp?keyno=85 http://www.zzsky.cn/build/content/407.htm var st = escape("测试");alert(st); * * GB2312转UTF8 * 例: * var xx=new GB2312UTF8(); * var Utf8=xx.Gb2312ToUtf8("你aaa好aaaaa"); * var Gb2312=xx.Utf8ToGb2312(Utf8); * alert(Gb2312); */function GB2312UTF8(){ this.Dig2Dec=function(s){ var retV = 0; if(s.length == 4){ for(var i = 0; i < 4; i ++){ retV += eval(s.charAt(i)) * Math.pow(2, 3 - i); } return retV; } return -1; } this.Hex2Utf8=function(s){ var retS = ""; var tempS = ""; var ss = ""; if(s.length == 16){ tempS = "1110" + s.substring(0, 4); tempS += "10" + s.substring(4, 10); tempS += "10" + s.substring(10,16); var sss = "0123456789ABCDEF"; for(var i = 0; i < 3; i ++){ retS += "%"; ss = tempS.substring(i * 8, (eval(i)+1)*8); retS += sss.charAt(this.Dig2Dec(ss.substring(0,4))); retS += sss.charAt(this.Dig2Dec(ss.substring(4,8))); } return retS; } return ""; } this.Dec2Dig=function(n1){ var s = ""; var n2 = 0; for(var i = 0; i < 4; i++){ n2 = Math.pow(2,3 - i); if(n1 >= n2){ s += '1'; n1 = n1 - n2; } else s += '0'; } return s; } this.Str2Hex=function(s){ var c = ""; var n; var ss = "0123456789ABCDEF"; var digS = ""; for(var i = 0; i < s.length; i ++){ c = s.charAt(i); n = ss.indexOf(c); digS += this.Dec2Dig(eval(n)); } return digS; } this.Gb2312ToUtf8=function(s1){ var s = escape(s1); var sa = s.split("%"); var retV =""; if(sa[0] != ""){ retV = sa[0]; } for(var i = 1; i < sa.length; i ++){ if(sa[i].substring(0,1) == "u"){ retV += this.Hex2Utf8(this.Str2Hex(sa[i].substring(1,5))); if(sa[i].length){ retV += sa[i].substring(5); } } else{ retV += unescape("%" + sa[i]); if(sa[i].length){ retV += sa[i].substring(5); } } } return retV; } this.Utf8ToGb2312=function(str1){ var substr = ""; var a = ""; var b = ""; var c = ""; var i = -1; i = str1.indexOf("%"); if(i==-1){ return str1; } while(i!= -1){ if(i<3){ substr = substr + str1.substr(0,i-1); str1 = str1.substr(i+1,str1.length-i); a = str1.substr(0,2); str1 = str1.substr(2,str1.length - 2); if(parseInt("0x" + a) & 0x80 == 0){ substr = substr + String.fromCharCode(parseInt("0x" + a)); } else if(parseInt("0x" + a) & 0xE0 == 0xC0){ //two byte b = str1.substr(1,2); str1 = str1.substr(3,str1.length - 3); var widechar = (parseInt("0x" + a) & 0x1F) << 6; widechar = widechar | (parseInt("0x" + b) & 0x3F); substr = substr + String.fromCharCode(widechar); } else{ b = str1.substr(1,2); str1 = str1.substr(3,str1.length - 3); c = str1.substr(1,2); str1 = str1.substr(3,str1.length - 3); var widechar = (parseInt("0x" + a) & 0x0F) << 12; widechar = widechar | ((parseInt("0x" + b) & 0x3F) << 6); widechar = widechar | (parseInt("0x" + c) & 0x3F); substr = substr + String.fromCharCode(widechar); } } else { substr = substr + str1.substring(0,i); str1= str1.substring(i); } i = str1.indexOf("%"); } return substr+str1; }} JS实现弹出层全屏特效,类似F11 js正则表达式小问题 求一精简的 div拖拽 cookie保存位置 有办法让提交之前先执行onclick事件嘛? cookie的作用域范围是如何界定的,即如何确定哪些页面可以共享cookie js动态绘制表格 菜鸟问题 document.body.scrollTop 与 document.body.offsetHeight 分别得到什么数值? 如何使用javascript在网页中加入音乐? 急寻大数据表格树控件 关于定义几个加粗、斜体、下划线和居中功能的按钮 document.getEelementsByName()
alert(st);
* GB2312转UTF8
* 例:
* var xx=new GB2312UTF8();
* var Utf8=xx.Gb2312ToUtf8("你aaa好aaaaa");
* var Gb2312=xx.Utf8ToGb2312(Utf8);
* alert(Gb2312);
*/function GB2312UTF8(){
this.Dig2Dec=function(s){
var retV = 0;
if(s.length == 4){
for(var i = 0; i < 4; i ++){
retV += eval(s.charAt(i)) * Math.pow(2, 3 - i);
}
return retV;
}
return -1;
}
this.Hex2Utf8=function(s){
var retS = "";
var tempS = "";
var ss = "";
if(s.length == 16){
tempS = "1110" + s.substring(0, 4);
tempS += "10" + s.substring(4, 10);
tempS += "10" + s.substring(10,16);
var sss = "0123456789ABCDEF";
for(var i = 0; i < 3; i ++){
retS += "%";
ss = tempS.substring(i * 8, (eval(i)+1)*8);
retS += sss.charAt(this.Dig2Dec(ss.substring(0,4)));
retS += sss.charAt(this.Dig2Dec(ss.substring(4,8)));
}
return retS;
}
return "";
}
this.Dec2Dig=function(n1){
var s = "";
var n2 = 0;
for(var i = 0; i < 4; i++){
n2 = Math.pow(2,3 - i);
if(n1 >= n2){
s += '1';
n1 = n1 - n2;
}
else
s += '0';
}
return s;
} this.Str2Hex=function(s){
var c = "";
var n;
var ss = "0123456789ABCDEF";
var digS = "";
for(var i = 0; i < s.length; i ++){
c = s.charAt(i);
n = ss.indexOf(c);
digS += this.Dec2Dig(eval(n));
}
return digS;
}
this.Gb2312ToUtf8=function(s1){
var s = escape(s1);
var sa = s.split("%");
var retV ="";
if(sa[0] != ""){
retV = sa[0];
}
for(var i = 1; i < sa.length; i ++){
if(sa[i].substring(0,1) == "u"){
retV += this.Hex2Utf8(this.Str2Hex(sa[i].substring(1,5)));
if(sa[i].length){
retV += sa[i].substring(5);
}
}
else{
retV += unescape("%" + sa[i]);
if(sa[i].length){
retV += sa[i].substring(5);
}
}
}
return retV;
}
this.Utf8ToGb2312=function(str1){
var substr = "";
var a = "";
var b = "";
var c = "";
var i = -1;
i = str1.indexOf("%");
if(i==-1){
return str1;
}
while(i!= -1){
if(i<3){
substr = substr + str1.substr(0,i-1);
str1 = str1.substr(i+1,str1.length-i);
a = str1.substr(0,2);
str1 = str1.substr(2,str1.length - 2);
if(parseInt("0x" + a) & 0x80 == 0){
substr = substr + String.fromCharCode(parseInt("0x" + a));
}
else if(parseInt("0x" + a) & 0xE0 == 0xC0){ //two byte
b = str1.substr(1,2);
str1 = str1.substr(3,str1.length - 3);
var widechar = (parseInt("0x" + a) & 0x1F) << 6;
widechar = widechar | (parseInt("0x" + b) & 0x3F);
substr = substr + String.fromCharCode(widechar);
}
else{
b = str1.substr(1,2);
str1 = str1.substr(3,str1.length - 3);
c = str1.substr(1,2);
str1 = str1.substr(3,str1.length - 3);
var widechar = (parseInt("0x" + a) & 0x0F) << 12;
widechar = widechar | ((parseInt("0x" + b) & 0x3F) << 6);
widechar = widechar | (parseInt("0x" + c) & 0x3F);
substr = substr + String.fromCharCode(widechar);
}
}
else {
substr = substr + str1.substring(0,i);
str1= str1.substring(i);
}
i = str1.indexOf("%");
} return substr+str1;
}
}