標籤：code style ons parse 支援 javascrip blog js基礎 class
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta charset="UTF-8"> 5 <title></title> 6 <script type="text/javascript"> 7 8 var a = 123; 9 10 /*11 * 在js中，如果需要表示16進位的數字，則需要以0x開頭12 * 如果需要表示8進位的數字，則需要以0開頭13 * 如果要要表示2進位的數字，則需要以0b開頭14 * 但是不是所有的瀏覽器都支援15 * 16 */17 18 //十六進位19 a = 0x10;20 a = 0xff;21 a = 0xCafe;22 23 //八位元字24 a = 070;25 26 //位元字27 //a = 0b10;28 29 //向"070"這種字串，有些瀏覽器會當成8進位解析，有些會當成10進位解析30 a = "070";31 32 //可以在parseInt()中傳遞一個第二個參數，來指定數位進位33 a = parseInt(a,10);34 35 console.log(typeof a);//number36 console.log(a);//7037 38 </script>39 </head>40 <body>41 </body>42 </html>
JS基礎_其他進位的數字
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