<html><body><h1>JavaScript 字符串方法</h1><p>search() 方法返回字符串中指定文本第一次出现的位置：</p><p id="demo"></p><script>var str = "The full name of China is the People's Republic of China.";var pos = str.search("China");document.getElementById("demo").innerHTML = pos;</script></body></html>