js: UrlDecode解码、UUID和GUID、阿拉伯数字转为中文数字

1. URL解码（UrlDecode）:

function urlDecode(input) {
    return decodeURIComponent(input.replace(/\+/g, ' '));
}
 
// 使用示例
var encodedUrl = "https%3A%2F%2Fwww.example.com%2Fsearch%3Fquery%3Djavascript";
var decodedUrl = urlDecode(encodedUrl);
console.log(decodedUrl); // 输出: https://www.example.com/search?query=javascript

2. UUID和GUID生成:

function generateUUID() {
    var d = new Date().getTime(); //Timestamp
    var d2 = (performance && performance.now && (performance.now()*1000)) || 0; //Time in microseconds since page-load or 0 if unsupported
    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
        var r = Math.random() * 16; //random number between 0 and 16
        if(d > 0) { //Use timestamp until depleted
            r = (d + r)%16 | 0;
            d = Math.floor(d/16);
        } else { //Use microseconds since page-load if supported
            r = (d2 + r)%16 | 0;
            d2 = Math.floor(d2/16);
        }
        return (c === 'x' ? r : (r & 0x3 | 0x8)).toString(16);
    });
}
 
// 使用示例
var uuid = generateUUID();
console.log(uuid); // 输出: 一个UUID，例如: 57dd3176-1774-4009-935d-93e1334b

3. 阿拉伯数字转中文数字:

function numberToChinese(num) {
    var chnNumChar = ["零","一","二","三","四","五","六","七","八","九"];
    var chnUnitChar = ["","十","百","千","万","十","百","千","亿"];
    var strIn = num.toString();
    var chnStr = "";
    var unitPos = 0;
    var zero = true;
    for (var i = 0; i < strIn.length; i++) {
        var num = strIn.charAt(i);
        if (num != 0) {
            zero = false;
        }
        if (!zero || (num != 0 && i % 4 == 0 && i != strIn.length -1 && strIn.charAt(i+1) != 0)) {
            chnStr += chnNumChar[Number(num)] + chnUnitChar[unitPos];
        } else if (num == 0 && unitPos == 0 && chnStr.length == 0) {
            chnStr += chnNumChar[0];
        }
        unitPos++;
        if (unitPos == 9 && num == 0) {
            unitPos = 0;
        }
        if (unitPos == 9) {
            if (zero) {
                chnStr += chn