源代码
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>享学课堂</title> </head> <body> <p>将数组与一个数字元素转换为其他类型:</p> <p id="demo" style="font-family:courier"></p> <script> var x = [20]; document.getElementById("demo").innerHTML = "Number : " + Number(x) + "<br>" + "String : " + String(x) + "<br>" + "Boolean: " + Boolean(x); </script> </body> </html>
运行结果