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FAQ

this

⇐ 1234567 ⇒



JavaScript , this, , . , validate, , , high low :

function validate(obj, lowval, hival) { if ((obj.value < lowval) || (obj.value > hival)) alert("Invalid Value!")}

, this .

JavaScript . , . :

- , .

- new.

, , , . , . , car, , make, model, year, color. , :

function car(make, model, year) { this.make = make; this.model = model; this.year = year;}

, this, , .

, mycar :

mycar = new car("Eagle", "Talon TSi", 1993);

mycar . mycar.make - "Eagle", mycar.year - 1993, .

car new. ,

kenscar = new car("Nissan", "300ZX", 1992)

, . , person :

function person(name, age, sex) { this.name = name; this.age = age; this.sex = sex;}

person :

rand = new person("Rand McNally", 33, "M")ken = new person("Ken Jones", 39, "M")

car, , person, :

function car(make, model, year, owner) { this.make = make; this.model = model; this.year = year; this.owner = owner;}

:

car1 = new car("Eagle", "Talon TSi", 1993, rand);car2 = new car("Nissan", "300ZX", 1992, ken)

, , rand ken . , car2, :

car2.owner.name

, . , :

car1.color = "black"

color car1, " black". , . , car.

. , GIF, , car, . :

function displayCar() { var result = "A Beautiful " + this.year + " " + this.make + " " + this.model; pretty_print(result)}

pretty_print - , . car,

This.displayCar = displayCar;

. , car :

function car(make, model, year, owner) { this.make = make; this.model = model; this.year = year; this.owner = owner; this.displayCar = displayCar;}

:

car1.displayCar () car2.displayCar ()

:

A Beautiful 1993 Eagle Talon TSi

A Beautiful 1992 Nissan 300ZX

 

8 9 .

 

1. n. .

2. n. .

3. m n (m ≤ 9999, n ≤ 9999). , m , n.

4. n. , (n ≤ 9999).

5. n ≤ 99. k .

6. n, k. , nk m.

7. n- , k.

8. A, B, C, , . , .

9. .

10. n p. ? n , .

11. [n; m] , .

12. x (x < 100). k, m, n 3, 5, 7. x.

13. n (n > 9). ( ). . n = 12345678. 1 + 2 + 3 + 4 = 10.

14. n. 1 n − 1, . , "". . n = 44. : 17, 26, 35.

15. n. 1 n − 1, . , "". . n = 44. : 18, 24.

16. n. 4- , , n. , "".

17. n. 4- , , n. , "".

18. n. m (m > 1), n . , "". . n = 12345, m = 5. n, 15, 5.

19. n. m (n < m < 2n), n ( ). , "". . n = 12345, m = 12360. 12360 15 n.

20. n (n > 9). , . . n = 1020000. .

1. ?

2. ?

3. , ?

4. ?

5. ?

6. .

10

: JavaScript. . (8 )

: JavaScript HTML-.

 

Date JavaScript , , [5-9].

, Date . . .

1. ( ), : var a = new Date();

2. , : var a = new Date(yyyy,mm,dd);

3. , : var a = new Date(yyyy,mm,dd,hh,mm,ss);

4. Date , : var a = new Date(otherDate.getTime());

. 0 - , 1 - ..

:

// now var now = new Date(); // birthday 20 1981 .var birthday = new Date(1981,5,20); // exam 5 1999 . 10 30 var exam = new Date(1981,5,20,10,30,0);

, , . . .

Date.

Date [6]

Date . :

var dtNewDate;dtNewDate = new Date();

Date, . , , Universal Coordinated Time.

:

var dtNewDate;dtNewDate = new Date(nMilliseconds);

nMilliseconds , 1 1970 .

, , :

var dtNewDate;dtNewDate=new Date(year, month, date, hours, min, sec, ms);

15.

15.

year , , 1998 2012
month 0 () 11 ()
date , 1 31
hours , 0 23. , min
min , 0 59. , sec
sec , 0 59. , ms
ms , 0 999

Date

GetDate

, Date. 1 31. :

var dtNewDate;var nDate;dtNewDate = new Date();nDate = dtNewDate.getDate(); getDay

, Date. 0 , 1 - , . :

nDay = dtDate.getDay(); getHours

, . :

nHours = dtDate.getHours(); getMinutes

, . :

nMinutes = dtDate.getMinutes(); getMonth

, . :

nMonth = dtDate.getMonth(); getSeconds

, . :

nSeconds = dtDate.getSeconds(); getTime

Date. getTime , 1 1970 . :

nMilliseconds = dtDate.getTime(); getTimeZoneOffset

( ). :

nOffsetMilliseconds = dtDate.getTimeZoneOffset(); getYear

getYear , Date. :

nYear = dtDate.getYear(); parse

parse , 00 00 1 1970 , . Date, :

nMS = Date.parse(szDataString);

szDataString , , :

"12 Oct 1998 12:00:00""12 Oct 1998 12:00:00 GMT""12 Oct 1998 12:00:00 GMT+0330"

, - , , , , - 3 30 .

parse Date setTime ( ).

SetDate

setDate Date. :

dtNewDate.setDate(nDateNumber);

nDateNumber 1 31.

SetHours

setHours , , Date. :

dtNewDate.setHours(nHours);

nHours . , Date.

SetMinutes

setMinutes , , Date. :
dtNewDate.setMinutes(nMinutes);

nMinutes . , Date.

SetMonth

setMonth , , Date. :

dtNewDate.setMonth(nMonth);

nMonth . , Date.

SetSeconds

setSeconds , , Date. :

dtNewDate.setSeconds(nSeconds);

nSeconds . , Date.

SetTime

setTime Date, , 1 1970 . :

dtNewDate.setTime(nMilliseconds); setYear

setYear , Date. :

dtNewDate.setYear(nsetYear); toGMTString

toGMTString , (GMT).

ToLocaleString

, GMT .

UTC

UTC , , , 1 1970 . UTC, parse, Date:

nMillisecond = Date.UTC(year, month, date, hours, min, sec, ms);

UTC , Date .

.

 

1. , , .

2. , , .

3. , .

4. , .

5. , .

6. ( ) ?

7. . , "14 2002 , , 2:53:44pm".

8. , 1 .

9. , 1 .

10. , ()?

11. , .

12. ?

13. (22 22 )?

14. ?

15. ?

16. , ( )

17. , (, , )

18. , (, , )

19. ,

20. , 13- ?

. . .

 

1. Date?

2. Date?

3. Date ?

4. Date ?

5. Date.

 

 

11

: JavaScript. . (8 )

: JavaScript HTML-.

 

JavaScript . [10-15].

Resize. , . , :

<html><head><script language="JavaScript">window.onresize= message;function message() { alert(" !");}</script></head><body>, .</body></html>

window.onresize= message;

. , message() , . , , . JavaScript . , button, :

<form name="myForm"><input type="button" name="myButton" onClick="alert('Click event occured!')"></form>

-:

<form name="myForm"><input type="button" name="myButton"></form>...<script language="JavaScript>document.myForm.myButton.onclick= message;function message() { alert('Click event occured!');}</script>

, . ? , window - - .

: -, window.onResize - , . -, message . window.onresize= message(), message() . - .

Event

JavaScript Event. , . , - , Event .

. - . , , :

:

<layer><a href="#" onClick="alert('x: ' + event.x + ' y: ' + event.y); return false;"><img src="davinci.jpg" width=209 height=264 border=0></a></layer>

, <a> onClick. , event.x event.y. Event, , .

<layer>. , .. . ( return false; , ).

16 Event.

 

16. Event

data URL , DragDrop.
layerX ( ) . Resize .
layerY ( ) . Resize .
modifiers , - ALT_MASK, CONTROL_MASK, META_MASK SHIFT_MASK
pageX ( ) .
pageY ( ) .
screenX ( ) .
screenY ( ) .
target , , .
type , .
which ASCII- .
x layerX
y layerY

- . -, , , onClick, . , , , , , . , , .

, , :

<html><head><script language="JavaScript">window.captureEvents(Event.CLICK);window.onclick= handle;function handle(e) { alert(" window !"); return true; // .. }</script></head><body><a href="test.htm">"" .</a></body></html>

, <a>.

window.captureEvents(Event.CLICK);

, Click window. window Click. , , window.

, Event.CLICK CLICK . , |. :

window.captureEvents(Event.CLICK | Event.MOVE);

handle(), , return true;. , , , handle(). return false;, .

<a> onClick, , . , window , link. handle()

function handle(e) { alert(" window !"); window.routeEvent(e); return true;}

, . e - Event, .

, - . handleEvent(). :

<html><script language="JavaScript">window.captureEvents(Event.CLICK);window.onclick= handle;function handle(e) { document.links[1].handleEvent(e);}</script><a href="test.htm">"" </a><br><a href="test.htm" onClick="alert(' !');"> </a></html>

Click, - !

, . - , .

<html><script language="JavaScript">window.captureEvents(Event.KEYPRESS);window.onkeypress= pressed;function pressed(e) { alert("Key pressed! ASCII-value: " + e.which);}</script></html> onAbort

, (, ). OnAbort JavaScript , .

, onAbort Image , :

<img name= "aircraft" src= "f15t.gif"

onAbort= "alert ('You didn\'t get to see the image! ') ">

OnBlur

OnBlur - , , framesets.

, , framesets, onBlur JavaScript , , .

OnBlur onBlur <body> , .

, userName - , , onBlur required(), , userName :

<input type= "text" value="" name="userName" onBlur="required(this.value) ">

OnClick

checkboxes, links, radio buttons, reset buttons, submit buttons, onClick false, , . false onClick .

compute() , . onClick , :

<input type="button" value="calculate" onClick="compute(this.form)">

OnError

, . onError JavaScript , .

, JavaScript , , Navigator.

, window.location.href ='Notthere.html ', Notthere.html , - Navigator ; , onError .

<IMG>, onError = "null" , , .

OnFocus

OnFocus - window, frame, frameset. window, frame, framesets, onFocus JavaScript, , .

OnFocus frame onFocus <body> , frame. , alert onFocus : OK, , .

onFocus textarea valueField valueCheck ().

<input tupe="textarea" value="" name=valueField" onFocus="valueCheck()">

OnLoad

OnLoad - :

image, onLoad , , . . , Image, src . , , onLoad , , , .

onLoad Image, GIF (multi-image GIF), onLoad, .

, onLoad , .

<body onLoad="window.alert(" !")>

OnMouseOut

MouseOut , , . OnMouseOut JavaScript , mouseOut.

, onMouseOut, onMouseOver. area, onMouseOut, href <area>.

true, status defaultStatus onMouseOver.

OnMouseOver

OnMouseOver - mouseOver. mouseOver , , . OnMouseOver JavaScript , mouseOver.

OnReset

Reset , Reset.

OnReset JavaScript , Reset. Intrnet-, .

 

.

 

- :

onClick

1. button_1 : "- ", " - ", " ?!".

2. button_1 .

3. : " ?".

onMouseOver

4. .

5. .

onMouseOut

6. , ,

onMouseMove

7. .

onAbort

8. ,

onFocus

9. text_1 : -

onBlur

10. text_1 : ?

onChange

11. text_1 : , !

onSelect

12. - : - , - !

onLoad

13.

onContextMenu

14. , ( , false)

onCopy onCut

15. - : , ( false)

onDblclick

16.

onKeyDown

17. - ,

onHelp

18. , , .

onResize

19. .

onSubmit

20. , submit : ,

 

1. ?

2. ?

3. ?

4. .

12

: JavaScript. . (12 )

: JavaScript HTML-.

 

, , .

 

 

1. button_1 : ("displayWindow", "width=400, height=300, status=no, toolbar=no, menubar=no").

2. , . 250 300 . . . , , , .

3. HTML "". . 50000 : " ..." 50000 .

4. , : : " ?". " " , .

5. , (prompt). , - . (alert) : , , , !

6. , : ", , !" . , .

7. , . : ; , , ; . : : " ". : " ..." . ,

8. , . , www.mycoolsite.ru, JavaScript www.mycoolsite.ru/index.html.

9. . , : ", !". , : " URL ?" , : " ? "; . onUnload.

10. . , .

11. , " ". " " - 216 , . : 216 RGB-, : 00, 33, 66, 99, CC, FF ( 0, 51, 102, 153, 204, 255 ).

12. , .

13. ( ).

14. , .

15. HTML. , . , , .

16. . Yahoo ( ). " ..."

17. HTML aform. , , , . , " ". , : " - " ( , ). (length) .

18. HTML-, : ", ". , , JavaScript top.location.href=urls[num]. (top - window, . location.href, , URL.)

19. HTML- . pic1.gif, , slow, medium fast, (pic2.gif, pic3.gif). medium . 800 . 1600 . 2400 . " ".

20. HTML- . 7 9 ( --). . -. validphone(phone) , 3.

 

.

 

 

13

: JavaScript. . (20 )

: JavaScript HTML-, , , .

 

JavaScript , . CGI Web. , JavaScript , [5-18].

<form>, HTML, :

<form name="_" target="_" action="_URL__" method=GET POST enctype="_" onSubmit="__Submit"> </form>

name . Document.

target <a>. CGI Web, , , . target. , , target .

action URL CGI, .

, Web, action . , , JavaScript Web, .

method Web GET POST. JavaScript , method .

enctype MIME . ( ), application/x-www-form-urlencoded.

URL. multipart/form-data , . JavaScript enctype .

, , submit. Web. , JavaScript .

form

form , , , . 17.

 

17. <form>

action action
elements ( ),
encoding enctype
length elements
method method
target target

 

<form>. JavaScript . elements, , , . form, 18.

 

18. <form>

button
checkbox Check Box.
hidden , . Web, JavaScript
password .
radio .
reset ,
select
submit Web.
text
textarea

⇐ 1234567 ⇒


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