下面的哈希函數(shù)與標(biāo)準(zhǔn)的哈希有些不一樣，有需要的可以拿去用

C版本的hash

c版本的Hash

javaScript的Hash

hashCode: function(str) {

    //將字符串轉(zhuǎn)成16進(jìn)制再去與 

    var bin_code = new Uint32Array();
    var offset = new Uint8Array();
    let k = strToHexCharCode(str[0]);
    offset = k & 0x3F;
    offset = offset % (str.length - 5);
    bin_code = (strToHexCharCode(str[offset]) & 0x7f) << 24
      | (strToHexCharCode(str[offset + 1]) & 0xff) << 16
      | (strToHexCharCode(str[offset + 2]) & 0xff) << 8
      | (strToHexCharCode(str[offset + 3]) & 0xff);

    let sss = Math.pow(10, 6);

    bin_code = bin_code % sss;

    return bin_code;
  },

//字符串轉(zhuǎn)十六進(jìn)制
function strToHexCharCode(str) {
  　　if (str === "")
    　　　　return "";
  　　var hexCharCode = [];
  　　hexCharCode.push("0x");
  　　for (var i = 0; i < str.length; i++) {
    　　　　hexCharCode.push((str.charCodeAt(i)).toString(16));
  　　}
  　　return hexCharCode.join("");
}