天空飘来五个字

<p id="content" style="font-size:25px;height:25px;letter-spacing:5px;padding:10px 20px;background-color:#0aa;">天空飘来五个字，那都不是事！</p>

// 小效果，天空飘来五个字
var showWordOneByOne = function (target) {

var text = target.text(),
arrStr = text.split("");
tId = null
word = "";

target.text("");

tId = setTimeout(function setWord() {

word = arrStr.shift();

target.append(word);

if (arrStr.length > 0) {
tId = setTimeout(setWord, 200);
}
}, 700);
};

showWordOneByOne($("#content"));