常用到的一些js方法，记录一下

function GetStringLength(str) {
return str.replace(/[^\x00-\xff]/g, "00").length;
}

function HTMLEncode(html) {
var temp = document.createElement("div");
(temp.textContent != null) ? (temp.textContent = html) : (temp.innerText = html);
var output = temp.innerHTML;
temp = null;
return output;
}

function HTMLDecode(text) {
var temp = document.createElement("div");
temp.innerHTML = text;
var output = temp.innerText || temp.textContent;
temp = null;
return output;
}

1 var com = com || {};
2 (function ($, com) {
3     /**
4     * 截取字符串
5     * @param str：要截取的字符串
6     * @param len：保留多少字符
7     * @param symbol：超过之后字符串末端要添加的字符
8     */
9     com.cutStr = function (str, len, symbol) {
10         str = str || "";
11         if (symbol == null || symbol == undefined)
12             symbol = "...";
13
14         var count = 0;
15         var strTemp = "";
16         for (var i = 0; i < str.length; i++) {
17             if (/[^\x00-\xff]/g.test(str.substr(i, 1))) {
18                 count += 2;
19             }
20             else {
21                 count += 1;
22             }
23             if (count <= len) {
24                 strTemp += str.substr(i, 1);
25             }
26             else {
27                 return strTemp + symbol;
28             }
29         }
30         return str;
31     },
32     /*
33     * 将日期字符串转化为Date
34     * (如：将"2016-12-24 20:13:14"转化为Date格式)
35     * @param d：待转化字符串(传入的时间不能有毫秒)
36     */
37     com.getDate = function (d) {
38         //部分浏览器(IE)不支持日期格式“yyyy-MM-dd hh:mm:ss”,必须将“-”转化为“/”
39         var date = new Date(Date.parse(d.replace(/-/g, "/")));
40         return date;
41     },
42     /*
43     * 获取html代码的纯文本
44     * @param html
45     */
46     com.removeHTMLTag = function (html) {
47         html = html.replace(/<\/?[^>]*>/g, ''); //去除HTML tag
48         html = html.replace(/[ | ]*\n/g, '\n'); //去除行尾空白
49         //html = html.replace(/\n[\s| | ]*\r/g,'\n'); //去除多余空行
50         html = html.replace(/ /ig, '');//去掉 
51         html = html.replace(/\s/g, ''); //将空格去掉
52         return html;
53     },
54     /*
55     * 获取地址栏参数
56     * @param 参数名
57     */
58     com.getQueryString = function (name) {
59         var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
60         var r = window.location.search.substr(1).match(reg);
61         if (r != null) return (r[2]); return null;
62     },
63
64     /**************************************************************
65     *将金额转化为大写
66     *   str：需要转化的金额
67     ****************************************************************/
68     com.convertMoney = function (n) {
69         var fraction = ['角', '分', '毫', '厘'];
70         var digit = ['零', '壹', '贰', '叁', '肆', '伍', '陆', '柒', '捌', '玖'];
71         var unit = [['元', '万', '亿'], ['', '拾', '佰', '仟']];
72         var cnInteger = "整"; //整数金额时后面跟的字符
73         var cnIntLast = "元"; //整型完以后的单位
74         var maxNum = 9999999999999.9999;
75         var head = n < 0 ? '负' : '';
76         //取绝对值
77         n = Math.abs(n);
78         if (n >= maxNum) {
79             console.error("金额转化超出最大处理数字");
80             return "";
81         }
82
83         var IntegerNum; //金额整数部分
84         var DecimalNum; //金额小数部分
85         var money = n.toString();
86         if (money.indexOf(".") == -1) {
87             IntegerNum = money;
88             DecimalNum = '';
89         } else {
90             var parts = money.split(".");
91             IntegerNum = parts[0];
92             DecimalNum = parts[1].substr(0, 4);
93         }
94
95         var ChineseStr = "";
96
97         //小数部分
98         if (DecimalNum != '') {
99             for (i = 0; i < DecimalNum.length; i++) {
100                 var m = DecimalNum.substr(i, 1);
101                 if (m != '0') {
102                     ChineseStr += digit[Number(m)] + fraction[i];
103                 }
104             }
105         }
106
107         IntegerNum = IntegerNum * 1;
108
109         //整数部分
110         for (var i = 0; i < unit[0].length && IntegerNum > 0; i++) {
111             var p = '';
112             for (var j = 0; j < unit[1].length && IntegerNum > 0; j++) {
113                 p = digit[IntegerNum % 10] + unit[1][j] + p;
114                 IntegerNum = Math.floor(IntegerNum / 10);
115             }
116             ChineseStr = p.replace(/(零.)*零$/, '').replace(/^$/, '零') + unit[0][i] + ChineseStr;
117         }
118
119         if (ChineseStr == '') {
120             ChineseStr += digit[0] + cnIntLast + cnInteger;
121         } else if (DecimalNum == '') {
122             ChineseStr += cnInteger;
123         }
124         ChineseStr = head + ChineseStr;
125         return ChineseStr;
126     },
127
128     /**
129     * 获取字符串长度（一个汉字占两个字符）
130     * @param str：字符串
131     */
132     com.getStringLength = function (str) {
133         return str.replace(/[^\x00-\xff]/g, "00").length;
134     }
135
136 })(jQuery, com);