计算机概论JavaScript II讲义.docx

1、计算机概论JavaScript II讲义JavaScript 1999.04.30常用的事件JavaScript的內建物件數學物件指令物件管理指令範例一小時鐘JavaScript Index12) ? hours -12 :hours) timeValue += (minutes 10) ? :0 : :) + minutes timeValue += (seconds = 12) ? P.M. : A.M. document.clock.face.value = timeValue; /你也可以將上面指令改為 /wndow.status = timeValue; /那麼時鐘將會顯示到視窗的狀

2、態列 timerID = setTimeout(showtime(),1000); timerRunning = true;/ - 範例二表格檢查!-function ShotTo(i) document.IDCHK.elementsi.focus() document.IDCHK.elementsi.select() function ChkName() if ( document.IDCHK.UNAME.value = 姓名 | document.IDCHK.UNAME.value = ) alert(請確實輸入您的姓名); return (false) else return (true

3、) function ChkID() var ID_Load = + document.IDCHK.IDGET.value.toUpperCase() if (ID_Load.length != 10) alert(身分證號碼錯誤!rn字數不足!) return (false) /建立一個 ID_Input 陣列 var ID_Input = new Array(10) /將 ID_Load 字串一個字元接著一個字元放入 ID_Input 陣列內 for (var i=0; i10; i+) ID_Inputi = ID_Load.charAt(i) /=以下測試 ID_Input0 是否為英

4、文字母= var EngString = ABCDEFGHIJKLMNOPQRSTUVWXYZ ID_Input0 = EngString.indexOf(ID_Input0) if (ID_Input0 = -1) alert(身分證號碼錯誤!rn無開頭的字母!) return (false) if (ID_Input1 !=1 & ID_Input1 !=2) alert(身分證號碼錯誤!rn無法辨識性別!) return (false) var NumArray = new Array(26) NumArray0 = 1 ; NumArray1 = 10; NumArray2 = 19;

5、 NumArray3 = 28; NumArray4 = 37; NumArray5 = 46; NumArray6 = 55; NumArray7 = 64; NumArray8 = 39; NumArray9 = 73; NumArray10 = 82; NumArray11 = 2 ; NumArray12 = 11; NumArray13 = 20; NumArray14 = 48; NumArray15 = 29; NumArray16 = 38; NumArray17 = 47; NumArray18 = 56; NumArray19 = 65; NumArray20 = 74;

6、NumArray21 = 83; NumArray22 = 21; NumArray23 = 3 ; NumArray24 = 12; NumArray25 = 30; var result = NumArrayID_Input0 for (var i=1; i旗標探遊天文之旅線上報名要參加的同仁請在11月底前線上報名, 逾時不候。您的尊姓大名：您身分證號碼：範例三計算機JavaScript線上計算機= 2) opStack0 = 3 else opStack0 = 1 opStackopStack0 = + document.PAD.SUM.value function display ()

7、 var sum = parseFloat(opStack1) var huge = Math.pow(10,14) sum = Math.round (sum * huge) / huge document.PAD.SUM.value = + sum function resetNum () opStack0 = 0 document.PAD.CAL.value = document.PAD.SUM.value = function entry (x) if (opStack0 = -1) opStack0 = 1; opStack1 = if (opStack0 = 0) opStack0 = 1; opStack1 = if (opStack0 = 2) opStack0 = 3; opStack3 = var result = result = opStackopStack0 if (result = 0) result = /- if (x=1 & x計算結果：七、參考資料輕鬆學會JavaScript 旗標出版社Java-JavaScript 資訊與電腦出版社