Code

将以下 js script 放置在 body 任意位置，随后在你喜欢的位置放置 id 为 saintwei 的元素。

<p style="text-align:center" id="saintwei"></p>

<script>
   var saintwei = function (r) {
       function t() {
           return b[Math.floor(Math.random() * b.length)]
       }
       function e() {
           return String.fromCharCode(94 * Math.random() + 33)
       }
       function n(r) {
           for (var n = document.createDocumentFragment(), i = 0; r > i; i++) {
               var l = document.createElement("span");
               l.textContent = e(), l.style.color = t(), n.appendChild(l)
           }
           return n
       }
       function i() {
           var t = o[c.skillI];
           c.step ? c.step-- : (c.step = g, c.prefixP < l.length ? (c.prefixP >= 0 && (c.text += l[c.prefixP]), c.prefixP++) : "forward" === c.direction ? c.skillP < t.length ? (c.text += t[c.skillP], c.skillP++) : c.delay ? c.delay-- : (c.direction = "backward", c.delay = a) : c.skillP > 0 ? (c.text = c.text.slice(0, -1), c.skillP--) : (c.skillI = (c.skillI + 1) % o.length, c.direction = "forward")), r.textContent = c.text, r.appendChild(n(c.prefixP < l.length ? Math.min(s, s + c.prefixP) : Math.min(s, t.length - c.skillP))), setTimeout(i, d)
       }
       var l = " Hi. ",
           o = ["Welcome to my blog", "世界本就如此艰难，何必还要让它更艰难呢", "你若盛开，蝴蝶自来；你若精彩，天自安排", "Are You OK", "转身变成一只猫"].map(function (r) {
               return r + "."
           }),
           a = 2,
           g = 1,
           s = 5,
           d = 75,
           b = ["rgb(110,64,170)", "rgb(150,61,179)", "rgb(191,60,175)", "rgb(228,65,157)", "rgb(254,75,131)", "rgb(255,94,99)", "rgb(255,120,71)", "rgb(251,150,51)", "rgb(226,183,47)", "rgb(198,214,60)", "rgb(175,240,91)", "rgb(127,246,88)", "rgb(82,246,103)", "rgb(48,239,130)", "rgb(29,223,163)", "rgb(26,199,194)", "rgb(35,171,216)", "rgb(54,140,225)", "rgb(76,110,219)", "rgb(96,84,200)"],
           c = {
               text: "",
               prefixP: -s,
               skillI: 0,
               skillP: 0,
               direction: "forward",
               delay: a,
               step: g
           };
       i()
   };
   saintwei(document.getElementById('saintwei'));
</script>

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