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confirm()方法用於顯示一個帶有指定訊息和確認及取消按鈕的對話方塊。
如果訪問者點擊"確定"，此方法返回true，否則返回false。
文法confirm(str);
參數說明:
str：在訊息對話方塊中要顯示的文本傳回值: Boolean值執行個體
注: 通過傳回值可以判斷使用者點擊了什麼按鈕
註：如果true改成false,結果是與否相反
1 <script type="text/javascript">2 var mymessage=confirm("你喜歡JavaScript嗎?");3 if(mymessage==true)4 { document.write("很好,加油!"); }5 else6 { document.write("JS功能強大，要學習噢!"); }7 </script>完整執行個體
1 <!DOCTYPE HTML> 2 <html> 3 <head> 4 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 5 <title>confirm</title> 6 <script type="text/javascript"> 7 function rec(){ 8 var mymessage=confirm("請問你是男士還是女士") ; 9 if(mymessage==true)10 {11 document.write("你是女士!");12 }13 else14 {15 document.write("你是男士!");16 }17 } 18 </script>19 </head>20 <body>21 <input name="button" type="button" onClick="rec()" value="點擊我，彈出確認對話方塊" />22 </body>23 </html>
慕課網之JavaScript-confirm
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