📜  获取 gravatar javascript (1)

📅  最后修改于: 2023-12-03 15:41:26.597000             🧑  作者: Mango

获取 Gravatar JavaScript

Gravatar 是一项用于提供全球通用头像(Globally Recognized Avatar)的服务,允许用户根据自己的电子邮件地址创建一个与该地址相关联的全球通用头像,该头像可以在许多不同的网站上使用。获取 Gravatar 的 JavaScript 库非常简单,可以使用以下代码片段:

<script src="//cdn.jsdelivr.net/gh/mailcheck/mailcheck/src/mailcheck.min.js"></script>

此代码片段使用 Mailcheck.js,它能够帮助用户验证输入的电子邮件地址是否正确。接下来,您只需在页面中添加以下 JavaScript 代码:

var MD5 = function (s) {
    function L(k, d) {
        return (k << d) | (k >>> (32 - d))
    }

    function K(G, k) {
        var I, d, F, H, x;
        F = (G & 2147483648);
        H = (k & 2147483648);
        I = (G & 1073741824);
        d = (k & 1073741824);
        x = (G & 1073741823) + (k & 1073741823);
        if (I & d) {
            return (x ^ 2147483648 ^ F ^ H)
        }
        if (I | d) {
            if (x & 1073741824) {
                return (x ^ 3221225472 ^ F ^ H)
            } else {
                return (x ^ 1073741824 ^ F ^ H)
            }
        } else {
            return (x ^ F ^ H)
        }
    }

    function r(d, F, k) {
        return (d & F) | ((~d) & k)
    }

    function q(d, F, k) {
        return (d & k) | (F & (~k))
    }

    function p(d, F, k) {
        return (d ^ F ^ k)
    }

    function n(d, F, k) {
        return (F ^ (d | (~k)))
    }

    function u(G, F, aa, Z, k, H, I) {
        G = K(G, K(K(r(F, aa, Z), k), I));
        return K(L(G, H), F)
    }

    function f(G, F, aa, Z, k, H, I) {
        G = K(G, K(K(q(F, aa, Z), k), I));
        return K(L(G, H), F)
    }

    function D(G, F, aa, Z, k, H, I) {
        G = K(G, K(K(p(F, aa, Z), k), I));
        return K(L(G, H), F)
    }

    function t(G, F, aa, Z, k, H, I) {
        G = K(G, K(K(n(F, aa, Z), k), I));
        return K(L(G, H), F)
    }

    function e(G) {
        var Z;
        var F = G.length;
        var x = F + 8;
        var k = (x - (x % 64)) / 64;
        var I = (k + 1) * 16;
        var aa = Array(I - 1);
        var d = 0;
        var H = 0;
        while (H < F) {
            Z = (H - (H % 4)) / 4;
            d = (H % 4) * 8;
            aa[Z] = (aa[Z] | (G.charCodeAt(H) << d));
            H++
        }
        Z = (H - (H % 4)) / 4;
        d = (H % 4) * 8;
        aa[Z] = aa[Z] | (128 << d);
        aa[I - 2] = F << 3;
        aa[I - 1] = F >>> 29;
        return aa
    }

    function B(x) {
        var k = "",
            F = "",
            G, d;
        for (d = 0; d <= 3; d++) {
            G = (x >>> (d * 8)) & 255;
            F = "0" + G.toString(16);
            k = k + F.substr(F.length - 2, 2)
        }
        return k
    }

    function J(k) {
        k = k.replace(/rn/g, "n");
        var d = "";
        for (var F = 0; F < k.length; F++) {
            var x = k.charCodeAt(F);
            if (x < 128) {
                d += String.fromCharCode(x)
            } else {
                if ((x > 127) && (x < 2048)) {
                    d += String.fromCharCode((x >> 6) | 192);
                    d += String.fromCharCode((x & 63) | 128)
                } else {
                    d += String.fromCharCode((x >> 12) | 224);
                    d += String.fromCharCode(((x >> 6) & 63) | 128);
                    d += String.fromCharCode((x & 63) | 128)
                }
            }
        }
        return d
    }
    var C = Array();
    var P, h, E, v, g, Y, X, W, V;
    var S = 7,
        Q = 12,
        N = 17,
        M = 22;
    var A = 5,
        z = 9,
        y = 14,
        w = 20;
    var o = 4,
        m = 11,
        l = 16,
        j = 23;
    var U = 6,
        T = 10,
        R = 15,
        O = 21;
    s = J(s);
    C = e(s);
    Y = 1732584193;
    X = 4023233417;
    W = 2562383102;
    V = 271733878;
    for (P = 0; P < C.length; P += 16) {
        h = Y;
        E = X;
        v = W;
        g = V;
        Y = u(Y, X, W, V, C[P + 0], S, 3614090360);
        V = u(V, Y, X, W, C[P + 1], Q, 3905402710);
        W = u(W, V, Y, X, C[P + 2], N, 606105819);
        X = u(X, W, V, Y, C[P + 3], M, 3250441966);
        Y = u(Y, X, W, V, C[P + 4], S, 4118548399);
        V = u(V, Y, X, W, C[P + 5], Q, 1200080426);
        W = u(W, V, Y, X, C[P + 6], N, 2821735955);
        X = u(X, W, V, Y, C[P + 7], M, 4249261313);
        Y = u(Y, X, W, V, C[P + 8], S, 1770035416);
        V = u(V, Y, X, W, C[P + 9], Q, 2336552879);
        W = u(W, V, Y, X, C[P + 10], N, 4294925233);
        X = u(X, W, V, Y, C[P + 11], M, 2304563134);
        Y = u(Y, X, W, V, C[P + 12], S, 1804603682);
        V = u(V, Y, X, W, C[P + 13], Q, 4254626195);
        W = u(W, V, Y, X, C[P + 14], N, 2792965006);
        X = u(X, W, V, Y, C[P + 15], M, 1236535329);
        Y = f(Y, X, W, V, C[P + 1], A, 4129170786);
        V = f(V, Y, X, W, C[P + 6], z, 3225465664);
        W = f(W, V, Y, X, C[P + 11], y, 643717713);
        X = f(X, W, V, Y, C[P + 0], w, 3921069994);
        Y = f(Y, X, W, V, C[P + 5], A, 3593408605);
        V = f(V, Y, X, W, C[P + 10], z, 38016083);
        W = f(W, V, Y, X, C[P + 15], y, 3634488961);
        X = f(X, W, V, Y, C[P + 4], w, 3889429448);
        Y = f(Y, X, W, V, C[P + 9], A, 568446438);
        V = f(V, Y, X, W, C[P + 14], z, 3275163606);
        W = f(W, V, Y, X, C[P + 3], y, 4107603335);
        X = f(X, W, V, Y, C[P + 8], w, 1163531501);
        Y = f(Y, X, W, V, C[P + 13], A, 2850285829);
        V = f(V, Y, X, W, C[P + 2], z, 4243563512);
        W = f(W, V, Y, X, C[P + 7], y, 1735328473);
        X = f(X, W, V, Y, C[P + 12], w, 2368359562);
        Y = D(Y, X, W, V, C[P + 5], o, 4294588738);
        V = D(V, Y, X, W, C[P + 8], m, 2272392833);
        W = D(W, V, Y, X, C[P + 11], l, 1839030562);
        X = D(X, W, V, Y, C[P + 14], j, 4259657740);
        Y = D(Y, X, W, V, C[P + 1], o, 2763975236);
        V = D(V, Y, X, W, C[P + 4], m, 1272893353);
        W = D(W, V, Y, X, C[P + 7], l, 4139469664);
        X = D(X, W, V, Y, C[P + 10], j, 3200236656);
        Y = D(Y, X, W, V, C[P + 13], o, 681279174);
        V = D(V, Y, X, W, C[P + 0], m, 3936430074);
        W = D(W, V, Y, X, C[P + 3], l, 3572445317);
        X = D(X, W, V, Y, C[P + 6], j, 76029189);
        Y = D(Y, X, W, V, C[P + 9], o, 3654602809);
        V = D(V, Y, X, W, C[P + 12], m, 3873151461);
        W = D(W, V, Y, X, C[P + 15], l, 530742520);
        X = D(X, W, V, Y, C[P + 2], j, 3299628645);
        Y = t(Y, X, W, V, C[P + 0], U, 4096336452);
        V = t(V, Y, X, W, C[P + 7], T, 1126891415);
        W = t(W, V, Y, X, C[P + 14], R, 2878612391);
        X = t(X, W, V, Y, C[P + 5], O, 4237533241);
        Y = t(Y, X, W, V, C[P + 12], U, 1700485571);
        V = t(V, Y, X, W, C[P + 3], T, 2399980690);
        W = t(W, V, Y, X, C[P + 10], R, 4293915773);
        X = t(X, W, V, Y, C[P + 1], O, 2240044497);
        Y = t(Y, X, W, V, C[P + 8], U, 1873313359);
        V = t(V, Y, X, W, C[P + 15], T, 4264355552);
        W = t(W, V, Y, X, C[P + 6], R, 2734768916);
        X = t(X, W, V, Y, C[P + 13], O, 1309151649);
        Y = t(Y, X, W, V, C[P + 4], U, 4149444226);
        V = t(V, Y, X, W, C[P + 11], T, 3174756917);
        W = t(W, V, Y, X, C[P + 2], R, 718787259);
        X = t(X, W, V, Y, C[P + 9], O, 3951481745);
        Y = K(Y, h);
        X = K(X, E);
        W = K(W, v);
        V = K(V, g)
    }
    var i = B(Y) + B(X) + B(W) + B(V);
    return i.toLowerCase()
};

function getGravatar(email) {
    return "https://www.gravatar.com/avatar/" + MD5(email.trim().toLowerCase());
}

该代码段包含了一个名为getGravatar()的函数,它可以获取指定邮箱地址关联的 Gravatar 头像 URL。您只需传递电子邮件地址作为其参数即可,例如:

var email = "johndoe@example.com";
var gravatarUrl = getGravatar(email);

返回的结果将是一个字符串,包含与指定电子邮件地址关联的 Gravatar 头像 URL。这个 URL 可以用作图像元素的 src 属性,如下所示:

<img src="https://www.gravatar.com/avatar/205e460b479e2e5b48aec07710c08d50" alt="John Doe's Gravatar" />

现在您已经掌握了获取 Gravatar 的 JavaScript,您可以用它来丰富您的 Web 应用程序或网站。