<div id="code">
  <p>/**</p>
  <p>*2014-2-12</p>
  <p>*代码自动闪烁输入</p>
  <p>*/</p>
  2014-2-14,I want to say:<br />
  Baby, I love you forever!<br />
</div>

function typewriter(id){
  var $ele = document.getElementById(id);
  var str = $ele.innerHTML, progress = 0;
  $ele.innerHTML = '';
  var timer = setInterval(function() {
    var current = str.substr(progress, 1);
    if (current == '<') {
      progress = str.indexOf('>', progress) + 1;
    } else {
      progress++;
    }
    $ele.innerHTML =str.substring(0, progress) + (progress & 1 "htmlcode">

typewriter("code");



弄成个jquery插件


(function($) {
  $.fn.typewriter = function() {
    var $ele = $(this), str = $ele.html(), progress = 0;
    $ele.html('');
    var timer = setInterval(function() {
      var current = str.substr(progress, 1);
      if (current == '<') {
        progress = str.indexOf('>', progress) + 1;
      } else {
        progress++;
      }
      $ele.html(str.substring(0, progress) + (progress & 1 "htmlcode">

$("#code").typewriter();



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