37. getElementsByClassName

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function

getElementsByClassName(name) {
    var

tags = document.getElementsByTagName('*')
|| document.all;
    var

els = [];
    for

(var

i = 0; i < tags.length; i++) {
        if

(tags.className) {
            var

cs = tags.className.split('
');
            for

(var

j = 0; j < cs.length; j++) {
                if

(name == cs[j]) {
                    els.push(tags);
                    break
                }
            }
        }
    }
    return

els
}

38. 获取页面高度

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function

getPageHeight(){
    var

g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"
                    ?
a
                    :
g.documentElement;
    return

Math.max(f.scrollHeight, a.scrollHeight, d.clientHeight);
}

39. 获取页面可视宽度

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function

getPageViewWidth(){
    var

d = document, a = d.compatMode == "BackCompat"
                    ?
d.body
                    :
d.documentElement;
    return

a.clientWidth;
}

40. 获取页面宽度

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function

getPageWidth(){
    var

g = document, a = g.body, f = g.documentElement, d = g.compatMode == "BackCompat"
                    ?
a
                    :
g.documentElement;
    return

Math.max(f.scrollWidth, a.scrollWidth, d.clientWidth);
}

41. 获取页面scrollTop

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function

getPageScrollTop(){
    var

a = document;
    return

a.documentElement.scrollTop || a.body.scrollTop;
}

42. 获取页面可视高度

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function

getPageViewHeight() {
    var

d = document, a = d.compatMode == "BackCompat"
                    ?
d.body
                    :
d.documentElement;
    return

a.clientHeight;
}

43. 去掉url前缀

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function

removeUrlPrefix(a){
    a=a.replace(/：/g,":").replace(/．/g,".").replace(/／/g,"/");
    while(trim(a).toLowerCase().indexOf("http://")==0){
        a=trim(a.replace(/http:\/\//i,""));
    }
    return

a;
}

44. 随机数时间戳

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function

uniqueId(){
    var

a=Math.random,b=parseInt;
    return

Number(new

Date()).toString()+b(10*a())+b(10*a())+b(10*a());
}

45. 全角半角转换

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//iCase:
0全到半，1半到全，其他不转化
function

chgCase(sStr,iCase){
    if(typeof

sStr != "string"

|| sStr.length <= 0 || !(iCase === 0 || iCase == 1)){
        return

sStr;
    }
    var

i,oRs=[],iCode;
    if(iCase){/*半->全*/
        for(i=0;
i<sStr.length;i+=1){
            iCode
= sStr.charCodeAt(i);
            if(iCode
== 32){
                iCode
= 12288;                             
            }else

if(iCode
< 127){
                iCode
+= 65248;
            }
                oRs.push(String.fromCharCode(iCode));
            }              
    }else{/*全->半*/
        for(i=0;
i<sStr.length;i+=1){
            iCode
= sStr.charCodeAt(i);
            if(iCode
== 12288){
                iCode
= 32;
            }else

if(iCode
> 65280 && iCode < 65375){
                iCode
-= 65248;                            
            }
                oRs.push(String.fromCharCode(iCode));
         }             
    }              
    return

oRs.join("");               
}

46. 确认是否键盘有效输入值

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function

checkKey(iKey){
    if(iKey
== 32 || iKey == 229){return

true;}/*空格和异常*/
    if(iKey>47
&& iKey < 58){return

true;}/*数字*/
    if(iKey>64
&& iKey < 91){return

true;}/*字母*/
    if(iKey>95
&& iKey < 108){return

true;}/*数字键盘1*/
    if(iKey>108
&& iKey < 112){return

true;}/*数字键盘2*/
    if(iKey>185
&& iKey < 193){return

true;}/*符号1*/
    if(iKey>218
&& iKey < 223){return

true;}/*符号2*/
    return

false;
}

47. 获取网页被卷去的位置

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function

getScrollXY() {
    return

document.body.scrollTop ? {
        x:
document.body.scrollLeft,
        y:
document.body.scrollTop
    }:
{
        x:
document.documentElement.scrollLeft,
        y:
document.documentElement.scrollTop
    }
}

48. 日期格式化函数+调用方法

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Date.prototype.format
= function(format){
    var

o = {
        "M+"

: this.getMonth()+1,
//month
        "d+"

: this.getDate(), 
//day
        "h+"

: this.getHours(),  
//hour
        "m+"

: this.getMinutes(),
//minute
        "s+"

: this.getSeconds(),
//second
        "q+"

: Math.floor((this.getMonth()+3)/3), 
//quarter
        "S"

: this.getMilliseconds()
//millisecond
    };
    if(/(y+)/.test(format))
format=format.replace(RegExp.$1,
(this.getFullYear()+"").substr(4
- RegExp.$1.length));
    for(var

k in

o){
        if(new

RegExp("("+
k +")").test(format))
            format
= format.replace(RegExp.$1,RegExp.$1.length==1 ? o[k] :("00"+
o[k]).substr((""+
o[k]).length));
    }
    return

format;
}
alert(new

Date().format("yyyy-MM-dd
hh:mm:ss"));

49. 时间个性化输出功能

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/*
1、<
60s, 显示为“刚刚”
2、>=
1min && < 60 min, 显示与当前时间差“XX分钟前”
3、>=
60min && < 1day, 显示与当前时间差“今天 XX:XX”
4、>=
1day && < 1year, 显示日期“XX月XX日 XX:XX”
5、>=
1year, 显示具体日期“XXXX年XX月XX日 XX:XX”
*/
function

timeFormat(time){
    var

date = new

Date(time),
        curDate
= new

Date(),
        year
= date.getFullYear(),
        month
= date.getMonth() + 10,
        day
= date.getDate(),
        hour
= date.getHours(),
        minute
= date.getMinutes(),
        curYear
= curDate.getFullYear(),
        curHour
= curDate.getHours(),
        timeStr;
    if(year
< curYear){
        timeStr
= year +'年'+
month +'月'+
day +'日
'+
hour +':'+
minute;
    }else{
        var

pastTime = curDate - date,
            pastH
= pastTime/3600000;
        if(pastH
> curHour){
              timeStr
= month +'月'+
day +'日
'+
hour +':'+
minute;
        }else

if(pastH
>= 1){
              timeStr
= '今天
'
+ hour +':'+
minute +'分';
        }else{
              var

pastM = curDate.getMinutes() - minute;
              if(pastM
> 1){
                timeStr
= pastM +'分钟前';
              }else{
                timeStr
= '刚刚';
              }
        }
    }
    return

timeStr;
}

50. 解决offsetX兼容性问题

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//
针对火狐不支持offsetX/Y
function

getOffset(e){
    var

target = e.target, //
当前触发的目标对象
          eventCoord,
          pageCoord,
          offsetCoord;
    //
计算当前触发元素到文档的距离
    pageCoord
= getPageCoord(target);
    //
计算光标到文档的距离
    eventCoord
= {
        X
: window.pageXOffset + e.clientX,
        Y
: window.pageYOffset + e.clientY
    };
    //
相减获取光标到第一个定位的父元素的坐标
    offsetCoord
= {
        X
: eventCoord.X - pageCoord.X,
        Y
: eventCoord.Y - pageCoord.Y
    };
    return

offsetCoord;
}
function

getPageCoord(element){
    var

coord = { X : 0, Y : 0 };
    //
计算从当前触发元素到根节点为止，
    //
各级 offsetParent 元素的 offsetLeft 或 offsetTop 值之和
    while

(element){
        coord.X
+= element.offsetLeft;
        coord.Y
+= element.offsetTop;
        element
= element.offsetParent;
    }
    return

coord;
}

51. 常用的正则表达式

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//正整数
/^[0-9]*[1-9][0-9]*$/;
//负整数
/^-[0-9]*[1-9][0-9]*$/;
//正浮点数
/^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$/;  
//负浮点数
/^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/; 
//浮点数
/^(-?\d+)(\.\d+)?$/;
//email地址
/^[\w-]+(\.[\w-]+)*@[\w-]+(\.[\w-]+)+$/;
//url地址
/^[a-zA-z]+://(\w+(-\w+)*)(\.(\w+(-\w+)*))*(\?\S*)?$/;
或：^http:\/\/[A-Za-z0-9]+\.[A-Za-z0-9]+[\/=\?%\-&_~`@[\]\':+!]*([^<>\"\"])*$
//年/月/日（年-月-日、年.月.日）
/^(19|20)\d\d[-
/.](0[1-9]|1[012])[- /.](0[1-9]|[12][0-9]|3[01])$/;
//匹配中文字符
/[\u4e00-\u9fa5]/;
//匹配帐号是否合法(字母开头，允许5-10字节，允许字母数字下划线)
/^[a-zA-Z][a-zA-Z0-9_]{4,9}$/;
//匹配空白行的正则表达式
/\n\s*\r/;
//匹配中国邮政编码
/[1-9]\d{5}(?!\d)/;
//匹配身份证
/\d{15}|\d{18}/;
//匹配国内电话号码
/(\d{3}-|\d{4}-)?(\d{8}|\d{7})?/;
//匹配IP地址
/((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)/;
//匹配首尾空白字符的正则表达式
/^\s*|\s*$/;
//匹配HTML标记的正则表达式
<
(\S*?)[^>]*>.*?|< .*? />;
//sql
语句
^(select|drop|delete|create|update|insert).*$
//提取信息中的网络链接
(h|H)(r|R)(e|E)(f|F)
*= *('|")?(\w|\\|\/|\.)+('|"|
*|>)?
//提取信息中的邮件地址
\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*
//提取信息中的图片链接
(s|S)(r|R)(c|C)
*= *('|")?(\w|\\|\/|\.)+('|"|
*|>)?
//提取信息中的
IP 地址
(\d+)\.(\d+)\.(\d+)\.(\d+)
//取信息中的中国手机号码
(86)*0*13\d{9}
//提取信息中的中国邮政编码
[1-9]{1}(\d+){5}
//提取信息中的浮点数（即小数）
(-?\d*)\.?\d+
//提取信息中的任何数字
(-?\d*)(\.\d+)?
//电话区号
^0\d{2,3}$
//腾讯
QQ 号
^[1-9]*[1-9][0-9]*$
//帐号（字母开头，允许
5-16 字节，允许字母数字下划线）
^[a-zA-Z][a-zA-Z0-9_]{4,15}$
//中文、英文、数字及下划线
^[\u4e00-\u9fa5_a-zA-Z0-9]+$

52. 返回顶部的通用方法

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function

backTop(btnId) {
    var

btn = document.getElementById(btnId);
    var

d = document.documentElement;
    var

b = document.body;
    window.onscroll
= set;
    btn.style.display
= "none";
    btn.onclick
= function()
{
        btn.style.display
= "none";
        window.onscroll
= null;
        this.timer
= setInterval(function()
{
            d.scrollTop
-= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
            b.scrollTop
-= Math.ceil((d.scrollTop + b.scrollTop) * 0.1);
            if

((d.scrollTop + b.scrollTop) == 0) clearInterval(btn.timer, window.onscroll = set);
            },
10);
    };
    function

set() {
        btn.style.display
= (d.scrollTop + b.scrollTop > 100) ? 'block':
"none"
    }
};
backTop('goTop');

53. 获得URL中GET参数值

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//
用法：如果地址是 test.htm?t1=1&t2=2&t3=3, 那么能取得：GET["t1"], GET["t2"], GET["t3"]
function

get_get(){
    querystr
= window.location.href.split("?")
    if(querystr[1]){
        GETs
= querystr[1].split("&");
        GET
= [];
        for(i=0;i<GETs.length;i++){
              tmp_arr
= GETs.split("=")
              key=tmp_arr[0]
              GET[key]
= tmp_arr[1]
        }
    }
    return

querystr[1];
}

54. 打开一个窗体通用方法

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function

openWindow(url,windowName,width,height){
    var

x = parseInt(screen.width / 2.0) - (width / 2.0);
    var

y = parseInt(screen.height / 2.0) - (height / 2.0);
    var

isMSIE= (navigator.appName == "Microsoft
Internet Explorer");
    if

(isMSIE) {
        var

p = "resizable=1,location=no,scrollbars=no,width=";
        p
= p+width;
           p
= p+",height=";
           p
= p+height;
        p
= p+",left=";
        p
= p+x;
        p
= p+",top=";
        p
= p+y;
        retval
= window.open(url, windowName, p);
    }
else

{
        var

win = window.open(url, "ZyiisPopup",
"top="

+ y + ",left="

+ x + ",scrollbars="

+ scrollbars + ",dialog=yes,modal=yes,width="

+ width + ",height="

+ height + ",resizable=no"

);
        eval("try
{ win.resizeTo(width, height); } catch(e) { }");
        win.focus();
    }
}

55. 提取页面代码中所有网址

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var

aa = document.documentElement.outerHTML.match(/(url\(|src=|href=)[\"\']*([^\"\'\(\)\<\>\[\]
]+)[\"\'\)]*|(http:\/\/[\w\-\.]+[^\"\'\(\)\<\>\[\] ]+)/ig).join("\r\n").replace(/^(src=|href=|url\()[\"\']*|[\"\'\>\)
]*$/igm,"");
alert(aa);

56. 清除相同的数组

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String.prototype.unique=function(){
    var

x=this.split(/[\r\n]+/);
    var

y='';
    for(var

i=0;i<x.length;i++){
        if(!new

RegExp("^"+x.replace(/([^\w])/ig,"\\$1")+"$","igm").test(y)){
            y+=x+"\r\n"
        }
    }
    return

y
};

57. 按字母排序，对每行进行数组排序

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function

SetSort(){
    var

text=K1.value.split(/[\r\n]/).sort().join("\r\n");//顺序
    var

test=K1.value.split(/[\r\n]/).sort().reverse().join("\r\n");//反序
    K1.value=K1.value!=text?text:test;
}

58. 字符串反序

function IsReverse(text){

    return text.split('').reverse().join('');

}

59. 清除html代码中的脚本

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function

clear_script(){
    K1.value=K1.value.replace(/<script.*?>[\s\S]*?<\/script>|\s+on[a-zA-Z]{3,16}\s?=\s?"[\s\S]*?"|\s+on[a-zA-Z]{3,16}\s?=\s?'[\s\S]*?'|\s+on[a-zA-Z]{3,16}\s?=[^
>]+/ig,"");
}
动态执行JavaScript脚本
function

javascript(){
    try{
      eval(K1.value);
    }catch(e){
      alert(e.message);
    }
}

60. 动态执行VBScript脚本

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function

vbscript(){
    try{
        var

script=document.getElementById("K1").value;
        if(script.trim()=="")return;
        window.execScript('On
Error Resume Next \n'+script+'\n
If Err.Number<>0 Then \n MsgBox "请输入正确的VBScript脚本!",48,"脚本错误!" \n End If',"vbscript")
    }catch(e){
        alert(e.message);
    }
}

61. 金额大写转换函数

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function

transform(tranvalue) {
    try

{
        var

i = 1;
        var

dw2 = new

Array("",
"万",
"亿");
//大单位
        var

dw1 = new

Array("拾",
"佰",
"仟");
//小单位
        var

dw = new

Array("零",
"壹",
"贰",
"叁",
"肆",
"伍",
"陆",
"柒",
"捌",
"玖");
//整数部分用
        //以下是小写转换成大写显示在合计大写的文本框中    
        //分离整数与小数
        var

source = splits(tranvalue);
        var

num = source[0];
        var

dig = source[1];
        //转换整数部分
        var

k1 = 0; //计小单位
        var

k2 = 0; //计大单位
        var

sum = 0;
        var

str = "";
        var

len = source[0].length; //整数的长度
        for

(i = 1; i <= len; i++) {
              var

n = source[0].charAt(len - i); //取得某个位数上的数字
              var

bn = 0;
              if

(len - i - 1 >= 0) {
                bn
= source[0].charAt(len - i - 1); //取得某个位数前一位上的数字
              }
              sum
= sum + Number(n);
              if

(sum != 0) {
                str
= dw[Number(n)].concat(str); //取得该数字对应的大写数字，并插入到str字符串的前面
                if

(n == '0')
sum = 0;
              }
              if

(len - i - 1 >= 0) { //在数字范围内
                if

(k1 != 3) { //加小单位
                      if

(bn != 0) {
                        str
= dw1[k1].concat(str);
                      }
                      k1++;
                }
else

{ //不加小单位，加大单位
                      k1
= 0;
                      var

temp = str.charAt(0);
                      if

(temp == "万"

|| temp == "亿")
//若大单位前没有数字则舍去大单位
                      str
= str.substr(1, str.length - 1);
                      str
= dw2[k2].concat(str);
                      sum
= 0;
                }
              }
              if

(k1 == 3){ //小单位到千则大单位进一
                k2++;
              }
        }
        //转换小数部分
        var

strdig = "";
        if

(dig != "")
{
              var

n = dig.charAt(0);
              if

(n != 0) {
                strdig
+= dw[Number(n)] + "角";
//加数字
              }
              var

n = dig.charAt(1);
              if

(n != 0) {
                strdig
+= dw[Number(n)] + "分";
//加数字
              }
        }
        str
+= "元"

+ strdig;
    }
catch(e)
{
        return

"0元";
    }
    return

str;
}
//拆分整数与小数
function

splits(tranvalue) {
    var

value = new

Array('',
'');
    temp
= tranvalue.split(".");
    for

(var

i = 0; i < temp.length; i++) {
        value
= temp;
    }
    return

value;
}

62. resize的操作

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(function(){
    var

fn = function(){
        var

w = document.documentElement ? document.documentElement.clientWidth : document.body.clientWidth
            ,r
= 1255
            ,b
= Element.extend(document.body)
            ,classname
= b.className;
        if(w
< r){
            //当窗体的宽度小于1255的时候执行相应的操作
        }else{
            //当窗体的宽度大于1255的时候执行相应的操作
        }
    }
    if(window.addEventListener){
        window.addEventListener('resize',
function(){
fn(); });
    }else

if(window.attachEvent){
        window.attachEvent('onresize',
function(){
fn(); });
    }
    fn();
})();

63. 实现base64解码

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function

base64_decode(data){
    var

b64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";
    var

o1, o2, o3, h1, h2, h3, h4, bits, i = 0,ac = 0,dec = "",tmp_arr
= [];
    if

(!data) { return

data; }
    data
+= '';
    do

{
        h1
= b64.indexOf(data.charAt(i++));
        h2
= b64.indexOf(data.charAt(i++));
        h3
= b64.indexOf(data.charAt(i++));
        h4
= b64.indexOf(data.charAt(i++));
        bits
= h1 << 18 | h2 << 12 | h3 << 6 | h4;
        o1
= bits >> 16 & 0xff;
        o2
= bits >> 8 & 0xff;
        o3
= bits & 0xff;
        if

(h3 == 64) {
            tmp_arr[ac++]
= String.fromCharCode(o1);
        }
else

if
(h4 == 64) {
            tmp_arr[ac++]
= String.fromCharCode(o1, o2);
        }
else

{
            tmp_arr[ac++]
= String.fromCharCode(o1, o2, o3);
        }
    }
while

(i < data.length);
    dec
= tmp_arr.join('');
    dec
= utf8_decode(dec);
    return

dec;
}

64. 实现utf8解码

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function

utf8_decode(str_data){
    var

tmp_arr = [],i = 0,ac = 0,c1 = 0,c2 = 0,c3 = 0;str_data += '';
    while

(i < str_data.length) {
        c1
= str_data.charCodeAt(i);
        if

(c1 < 128) {
            tmp_arr[ac++]
= String.fromCharCode(c1);
            i++;
        }
else

if
(c1 > 191 && c1 < 224) {      
            c2
= str_data.charCodeAt(i + 1);
            tmp_arr[ac++]
= String.fromCharCode(((c1 & 31) << 6) | (c2 & 63));
            i
+= 2;
        }
else

{
            c2
= str_data.charCodeAt(i + 1);
            c3
= str_data.charCodeAt(i + 2);
            tmp_arr[ac++]
= String.fromCharCode(((c1 & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
            i
+= 3;
        }
    }
    return

tmp_arr.join('');
}

65. 获取窗体可见范围的宽与高

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function

getViewSize(){
    var

de=document.documentElement;
    var

db=document.body;
    var

viewW=de.clientWidth==0 ?  db.clientWidth : de.clientWidth;
    var

viewH=de.clientHeight==0 ?  db.clientHeight : de.clientHeight;
    return

Array(viewW ,viewH);
}

66. 断鼠标是否移出事件

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function

isMouseOut(e, handler) {
    if

(e.type !== 'mouseout')
{
        return

false;
    }
    var

reltg = e.relatedTarget ? e.relatedTarget : e.type === 'mouseout'

? e.toElement : e.fromElement;
    while

(reltg && reltg !== handler) {
        reltg
= reltg.parentNode;
    }
    return

(reltg !== handler);
}

67. 半角转换为全角函数

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function

ToDBC(str){
    var

result = '';
    for(var

i=0; i < str.length; i++){
      code
= str.charCodeAt(i);
      if(code
>= 33 && code <= 126){
          result
+= String.fromCharCode(str.charCodeAt(i) + 65248);
      }else

if
(code == 32){
          result
+= String.fromCharCode(str.charCodeAt(i) + 12288 - 32);
      }else{
          result
+= str.charAt(i);
      }
    }
    return

result;
}

68. 全角转换为半角函数

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function

ToCDB(str){
    var

result = '';
    for(var

i=0; i < str.length; i++){
      code
= str.charCodeAt(i);
      if(code
>= 65281 && code <= 65374){
          result
+= String.fromCharCode(str.charCodeAt(i) - 65248);
      }else

if
(code == 12288){
          result
+= String.fromCharCode(str.charCodeAt(i) - 12288 + 32);
      }else{
          result
+= str.charAt(i);
      }
    }
    return

result;
}

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