2.源码
<html> <head> <style type="text/css"> #myDiv{ display: inline-block; width:500px; height:300px; background-color:rgba(0,0,0,0.3); color:hsla(0,100%,70%,1); word-wrap:break-word; line-height:30px; letter-spacing:3px; padding-left:3px; text-indent:40px; border-radius:5px; -webkit-box-shadow: 3px 3px 3px 3px rgba(0,0,0,0.1); -moz-box-shadow: 3px 3px 3px 3px rgba(0,0,0,0.1); box-shadow: 3px 3px 3px 3px rgba(0,0,0,0.1); } </style> <script type="text/javascript"> window.onload = function () { var myDiv = document.getElementById("myDiv"); var contentArr = "秋天来临了天空像一块覆盖大地的蓝宝石。村外那个小池塘睁着碧澄澄的眼睛，凝望着这美好的天色。一对小白鹅侧着脑袋欣赏自己映在水里的影子。山谷里枫树的叶子，不知是否喝了过量的酒，红的像一团火似的。村前村后的稻子，低着头弯着腰，在秋风中默默地等待着人们去收割，半空中，排着“人”字形的雁群，高兴的唱着歌，告别人们，向天边慢慢飞去……".split(""); var content = ""; var index = 0; var ID = setInterval(function () { content += contentArr[index]; myDiv.innerHTML = content + "_"; index++; if(index === contentArr.length){ myDiv.innerHTML = content ; clearInterval(ID); console.log("结束了"); } },100); } </script> </head> <body> <div></div> </body> </html>