Sh. A. Nazirov, F. M. Nuraliev
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dhtml yordamida web-sahifa
- Bu sahifa navigatsiya:
- Многомерный массив
- JavaScript Date Time Demo
- LOG10E
- Number
- MIN_VALUE
- NEGATIVE_INFINITY
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function openWin() { myWin= open("abc.html"); } // --> "); myWin.document.write(" myWin.document.write("Этот HTML-документ был открыт "); myWin.document.write("с помощью JavaScript!"); myWin.document.write(" myWin.document.write(" "); myWin.document.write(" myWin.document.write("Этот HTML-документ был открыт "); myWin.document.write("с помощью JavaScript!"); PDF created with pdfFactory trial version www.pdffactory.com 36 myWin.document.write(""); myWin.document.write(" tegini o’zgartiramiz: Joint metodi massiv elemetlarini ajratib turuvchini berish mumkin bo’lgan majburiy bo’lmagan parametrga ega. Ko’rsatilmagan holda “,” belgisi ishlatiladi. Masalan function test() { alert(myArray.join(" _|_ ")); } reverse metodi massive elementlarini o’rin almashtirishlari uchun foydalaniladi. test funktsiaysiga shu metodni chaqirilishini qo’shamiz: function test() { myArray.reverse(); alert(myArray.join(";")); } Massivning birinchi elementi ohirgi o’rinni egalladi, ikkinchisi- ohiridan oldingi va hokazo. Sort metodi massiv elementlarini tartiblash uchun foydalaniladi. test funktsiyasiga shu metodni chqirilishini qo’shamiz: function test() { myArray.sort(); alert(myArray.join(";")); } Ko’p o’lchamli massivlarni yaratish. PDF created with pdfFactory trial version www.pdffactory.com 40 Array ob’ekti ko’p o’lchamli massivlarni yaratishga imkon beradi. Quyida ko’p o’lchamli massivni yaratishga misol keltirilgan. Многомерный массив a = new Array(4); for( i=0; i < 4; i++) { a[i] = new Array(4); for( j=0; j < 4; j++) { a[i][j] = "["+i+","+j+"]"; } } for( i=0; i < 4; i++) { str = "Строка "+i+":"; for( j=0; j < 4; j++) { str += a[i][j]; } document.write( str, " "); } // ikki mantiqiy o’zgaruvchi yaratamiz bfalse = new Вoolean(false); btru = new Вoolean(true); // ularning qiymatlarini chqaramiz (mantiqiy qiymatlar) document.write(bfalse.valueOf()+" "); document.write(btrue.valueOf()+" "); // satrli qiymatlarni chiqaramiz document.write(bfalse.toString()+" "); document.write(btrue.toString()+" "); today = new Date(); document.write("today="+today+" "); someDate = new Date("May 16, 1996"); document.write("someDate="+someDate+" "); otherDay = new Date( 96, 4, 15); document.write("otherDay="+otherDay+" "); sameDay = new Date( 96, 4, 16, 15, 30, 0); PDF created with pdfFactory trial version www.pdffactory.com 42 document.write("sameDay="+sameDay+" "); someDate = new Date( "May 15, 1996" ); document.write("someDate="+someDate+" "); document.write("getDay ="+someDate.getDay()+" "); document.write("getMonth="+someDate.getMonth()+" "); document.write("getYear ="+someDate.getYear()+" "); today = new Date(); // sanani berish endYear = new Date("December 31, 1990"); // yilni o’zgartirish endYear.setYear(today.getYear()); // kundagi millisekundlar sonini hisoblash msPerDay = 24 * 60 * 60 * 1000; // kunlar sonini olish daysLeft = (endYear.getTime() - today.getTime()) / msPerDay; // yahlitlash daysLeft = Math.round(daysLeft); // ko’rsatish document.write("Number of days left in the year: "+daysLeft); JavaScript Date & Time Demo var newBgColor = new Function("c", "document.bgColor=c"); function fnDemo() { newBgColor("#a7b7c7"); } var myMult = new Function("x", "у", "return х*у"); document.write("10*20="+myMult(10, 20)); PDF created with pdfFactory trial version www.pdffactory.com 46 var myMult = new Function("x", "у", "return х*у"); function calc() { document.forms[0].sum.value = myMult(document.forms[0].x.value, document.forms[0].y.value); } s = " " E | " + Math.E + " | " LN2 | " + Math.LN2 + " | " LN10 | " + Math.LN10 + " | " LOG2E | " + Math.LOG2E + " | " LOG10E | " + Math.LOG10E + " | " PI | " + Math.PI + " | " SQRT1_2 | " + Math.SQRT1_2 + " | " SQRT2 | " + Math.SQRT2 + " | " |
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