简单实现 仿 JQuery 的 Ajax v2.0

简单实现 仿 JQuery 的 Ajax v2.0

var JSyb = {
  id: function (id) {
      return document.getElementById(id)
    },
    fetch: function (url, method, options, callback) {
      if (arguments.length !== 4) return alert("fetch 参数错误")
      var initObj
      var searchStr = this.convert(options)
      if (method === "GET") {
        url += "?" + searchStr
        initObj = {
          method: "GET",
          credentials: "include", // 发送或接受cookie
        }
      }
      if (method === "POST") {
        initObj = {
          method: "POST",
          credentials: "include",
          headers: new Headers({
            //"Accept": "application/json",
            "Content-Type": "application/x-www-form-urlencoded"
          }),
          body: searchStr
        }
      }
      if (method === "FILE") {
        initObj = {
          method: "POST",
          credentials: "include",
          body: options
        }
      }
      fetch(url, initObj).then((data) => {
        data.text().then((data) => {
          callback(data)
        })
      })
    },
    convert: function (obj, arr = [], idx = 0) {
      if (typeof obj === "object") {
        var result = Object.keys(obj).map(function (key) {
          return encodeURIComponent(key) + "=" + encodeURIComponent(obj[key])
        }).join("&")
        return result + "&_=" + new Date().getTime()
      } else {
        return alert("convert Object错误")
      }
    },
    css: function (path) {
      if (!path || path.length === 0) {
        return "CSS 文件不存在"
      }
      var head = document.getElementsByTagName("head")[0]
      var link = document.createElement("link")
      link.href = path
      link.rel = "stylesheet"
      link.type = "text/css"
      head.appendChild(link)
    },
    js: function (path) {
      if (!path || path.length === 0) {
        return "JS 文件不存在"
      }
      var head = document.getElementsByTagName("head")[0]
      var script = document.createElement("script")
      script.src = path
      script.type = "text/javascript"
      head.appendChild(script)
    },
    uuid: function () {
      var d = new Date().getTime()
      var guid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
        var r = (d + Math.random() * 16) % 16 | 0
        d = Math.floor(d / 16)
        return (c == 'x' ? r : (r & 0x7 | 0x8)).toString(16)
      })
      return guid
    },
    randnum: function (n) {
      var rnd = "";
      for (var i = 0; i < n; i++) rnd += Math.floor(Math.random() * 10);
      return rnd;
    },
    bin2hex: function (str) {
      var data = "";
      for (var i = 0; i < str.length; i++) {
        if (data === "") {
          data = str.charCodeAt(i).toString(16);
        } else {
          data += str.charCodeAt(i).toString(16);
        }
      }
      return data;
    },
    md5: function (string, mod) {
      function RotateLeft(lValue, iShiftBits) {
        return lValue << iShiftBits | lValue >>> 32 - iShiftBits;
      }

      function AddUnsigned(lX, lY) {
        var lX4, lY4, lX8, lY8, lResult;
        lX8 = lX & 2147483648;
        lY8 = lY & 2147483648;
        lX4 = lX & 1073741824;
        lY4 = lY & 1073741824;
        lResult = (lX & 1073741823) + (lY & 1073741823);
        if (lX4 & lY4) {
          return lResult ^ 2147483648 ^ lX8 ^ lY8;
        }
        if (lX4 | lY4) {
          if (lResult & 1073741824) {
            return lResult ^ 3221225472 ^ lX8 ^ lY8;
          } else {
            return lResult ^ 1073741824 ^ lX8 ^ lY8;
          }
        } else {
          return lResult ^ lX8 ^ lY8;
        }
      }

      function F(x, y, z) {
        return x & y | ~x & z;
      }

      function G(x, y, z) {
        return x & z | y & ~z;
      }

      function H(x, y, z) {
        return x ^ y ^ z;
      }

      function I(x, y, z) {
        return y ^ (x | ~z);
      }

      function FF(a, b, c, d, x, s, ac) {
        a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
        return AddUnsigned(RotateLeft(a, s), b);
      }

      function GG(a, b, c, d, x, s, ac) {
        a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
        return AddUnsigned(RotateLeft(a, s), b);
      }

      function HH(a, b, c, d, x, s, ac) {
        a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
        return AddUnsigned(RotateLeft(a, s), b);
      }

      function II(a, b, c, d, x, s, ac) {
        a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
        return AddUnsigned(RotateLeft(a, s), b);
      }

      function ConvertToWordArray(string) {
        var lWordCount;
        var lMessageLength = string.length;
        var lNumberOfWords_temp1 = lMessageLength + 8;
        var lNumberOfWords_temp2 = (lNumberOfWords_temp1 - lNumberOfWords_temp1 % 64) / 64;
        var lNumberOfWords = (lNumberOfWords_temp2 + 1) * 16;
        var lWordArray = Array(lNumberOfWords - 1);
        var lBytePosition = 0;
        var lByteCount = 0;
        while (lByteCount < lMessageLength) {
          lWordCount = (lByteCount - lByteCount % 4) / 4;
          lBytePosition = lByteCount % 4 * 8;
          lWordArray[lWordCount] = lWordArray[lWordCount] | string.charCodeAt(lByteCount) << lBytePosition;
          lByteCount++;
        }
        lWordCount = (lByteCount - lByteCount % 4) / 4;
        lBytePosition = lByteCount % 4 * 8;
        lWordArray[lWordCount] = lWordArray[lWordCount] | 128 << lBytePosition;
        lWordArray[lNumberOfWords - 2] = lMessageLength << 3;
        lWordArray[lNumberOfWords - 1] = lMessageLength >>> 29;
        return lWordArray;
      }

      function WordToHex(lValue) {
        var WordToHexValue = "",
          WordToHexValue_temp = "",
          lByte, lCount;
        for (lCount = 0; lCount <= 3; lCount++) {
          lByte = lValue >>> lCount * 8 & 255;
          WordToHexValue_temp = "0" + lByte.toString(16);
          WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length - 2, 2);
        }
        return WordToHexValue;
      }

      function Utf8Encode(string) {
        string = string.replace(/\r\n/g, "\n");
        var utftext = "";
        for (var n = 0; n < string.length; n++) {
          var c = string.charCodeAt(n);
          if (c < 128) {
            utftext += String.fromCharCode(c);
          } else if (c > 127 && c < 2048) {
            utftext += String.fromCharCode(c >> 6 | 192);
            utftext += String.fromCharCode(c & 63 | 128);
          } else {
            utftext += String.fromCharCode(c >> 12 | 224);
            utftext += String.fromCharCode(c >> 6 & 63 | 128);
            utftext += String.fromCharCode(c & 63 | 128);
          }
        }
        return utftext;
      }
      var x = Array();
      var k, AA, BB, CC, DD, a, b, c, d;
      var S11 = 7,
        S12 = 12,
        S13 = 17,
        S14 = 22;
      var S21 = 5,
        S22 = 9,
        S23 = 14,
        S24 = 20;
      var S31 = 4,
        S32 = 11,
        S33 = 16,
        S34 = 23;
      var S41 = 6,
        S42 = 10,
        S43 = 15,
        S44 = 21;
      string = Utf8Encode(string);
      x = ConvertToWordArray(string);
      a = 1732584193;
      b = 4023233417;
      c = 2562383102;
      d = 271733878;
      for (k = 0; k < x.length; k += 16) {
        AA = a;
        BB = b;
        CC = c;
        DD = d;
        a = FF(a, b, c, d, x[k + 0], S11, 3614090360);
        d = FF(d, a, b, c, x[k + 1], S12, 3905402710);
        c = FF(c, d, a, b, x[k + 2], S13, 606105819);
        b = FF(b, c, d, a, x[k + 3], S14, 3250441966);
        a = FF(a, b, c, d, x[k + 4], S11, 4118548399);
        d = FF(d, a, b, c, x[k + 5], S12, 1200080426);
        c = FF(c, d, a, b, x[k + 6], S13, 2821735955);
        b = FF(b, c, d, a, x[k + 7], S14, 4249261313);
        a = FF(a, b, c, d, x[k + 8], S11, 1770035416);
        d = FF(d, a, b, c, x[k + 9], S12, 2336552879);
        c = FF(c, d, a, b, x[k + 10], S13, 4294925233);
        b = FF(b, c, d, a, x[k + 11], S14, 2304563134);
        a = FF(a, b, c, d, x[k + 12], S11, 1804603682);
        d = FF(d, a, b, c, x[k + 13], S12, 4254626195);
        c = FF(c, d, a, b, x[k + 14], S13, 2792965006);
        b = FF(b, c, d, a, x[k + 15], S14, 1236535329);
        a = GG(a, b, c, d, x[k + 1], S21, 4129170786);
        d = GG(d, a, b, c, x[k + 6], S22, 3225465664);
        c = GG(c, d, a, b, x[k + 11], S23, 643717713);
        b = GG(b, c, d, a, x[k + 0], S24, 3921069994);
        a = GG(a, b, c, d, x[k + 5], S21, 3593408605);
        d = GG(d, a, b, c, x[k + 10], S22, 38016083);
        c = GG(c, d, a, b, x[k + 15], S23, 3634488961);
        b = GG(b, c, d, a, x[k + 4], S24, 3889429448);
        a = GG(a, b, c, d, x[k + 9], S21, 568446438);
        d = GG(d, a, b, c, x[k + 14], S22, 3275163606);
        c = GG(c, d, a, b, x[k + 3], S23, 4107603335);
        b = GG(b, c, d, a, x[k + 8], S24, 1163531501);
        a = GG(a, b, c, d, x[k + 13], S21, 2850285829);
        d = GG(d, a, b, c, x[k + 2], S22, 4243563512);
        c = GG(c, d, a, b, x[k + 7], S23, 1735328473);
        b = GG(b, c, d, a, x[k + 12], S24, 2368359562);
        a = HH(a, b, c, d, x[k + 5], S31, 4294588738);
        d = HH(d, a, b, c, x[k + 8], S32, 2272392833);
        c = HH(c, d, a, b, x[k + 11], S33, 1839030562);
        b = HH(b, c, d, a, x[k + 14], S34, 4259657740);
        a = HH(a, b, c, d, x[k + 1], S31, 2763975236);
        d = HH(d, a, b, c, x[k + 4], S32, 1272893353);
        c = HH(c, d, a, b, x[k + 7], S33, 4139469664);
        b = HH(b, c, d, a, x[k + 10], S34, 3200236656);
        a = HH(a, b, c, d, x[k + 13], S31, 681279174);
        d = HH(d, a, b, c, x[k + 0], S32, 3936430074);
        c = HH(c, d, a, b, x[k + 3], S33, 3572445317);
        b = HH(b, c, d, a, x[k + 6], S34, 76029189);
        a = HH(a, b, c, d, x[k + 9], S31, 3654602809);
        d = HH(d, a, b, c, x[k + 12], S32, 3873151461);
        c = HH(c, d, a, b, x[k + 15], S33, 530742520);
        b = HH(b, c, d, a, x[k + 2], S34, 3299628645);
        a = II(a, b, c, d, x[k + 0], S41, 4096336452);
        d = II(d, a, b, c, x[k + 7], S42, 1126891415);
        c = II(c, d, a, b, x[k + 14], S43, 2878612391);
        b = II(b, c, d, a, x[k + 5], S44, 4237533241);
        a = II(a, b, c, d, x[k + 12], S41, 1700485571);
        d = II(d, a, b, c, x[k + 3], S42, 2399980690);
        c = II(c, d, a, b, x[k + 10], S43, 4293915773);
        b = II(b, c, d, a, x[k + 1], S44, 2240044497);
        a = II(a, b, c, d, x[k + 8], S41, 1873313359);
        d = II(d, a, b, c, x[k + 15], S42, 4264355552);
        c = II(c, d, a, b, x[k + 6], S43, 2734768916);
        b = II(b, c, d, a, x[k + 13], S44, 1309151649);
        a = II(a, b, c, d, x[k + 4], S41, 4149444226);
        d = II(d, a, b, c, x[k + 11], S42, 3174756917);
        c = II(c, d, a, b, x[k + 2], S43, 718787259);
        b = II(b, c, d, a, x[k + 9], S44, 3951481745);
        a = AddUnsigned(a, AA);
        b = AddUnsigned(b, BB);
        c = AddUnsigned(c, CC);
        d = AddUnsigned(d, DD);
      }
      if (mod == 16) {
        var temp = WordToHex(b) + WordToHex(c);
      } else {
        var temp = WordToHex(a) + WordToHex(b) + WordToHex(c) + WordToHex(d);
      }
      return temp.toLowerCase();
    }
}

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创建时间:2018-09-30 18:26:00