<!DOCTYPE html> <html> <body> <h2>JavaScript 全局函数</h2> <h2>parseInt()</h2> <p>全局 JavaScript 函数 parseInt() 将字符串转换为数字:</p> <p id="demo"></p> <script> document.getElementById("demo").innerHTML = parseInt("-10") + "<br>" + parseInt("-10.33") + "<br>" + parseInt("10") + "<br>" + parseInt("10.33") + "<br>" + parseInt("10 6") + "<br>" + parseInt("10 years") + "<br>" + parseInt("years 10"); </script> </body> </html>