<html><body><h1>JavaScript Number 方法</h1><h2>Number.parseInt() 方法</h2><p>解析一个字符串并返回第一个整数：</p><p id="demo"></p><script>document.getElementById("demo").innerHTML =Number.parseInt("10") + "<br>" +Number.parseInt("10.00") + "<br>" +Number.parseInt("10.33") + "<br>" +Number.parseInt("34 45 66") + "<br>" +Number.parseInt(" 60 ") + "<br>" +Number.parseInt("40 years") + "<br>" +Number.parseInt("He was 40");</script></body></html>