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G.VALET >> Javascript

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INTRODUCTION.......................................................................................................................................................3

JAVASCRIPT EST-IL NORMALISÉ ?...............................................................................................................................3QU'Y A T-IL SOUS LE CAPOT ?.....................................................................................................................................3JAVASCRIPT CÔTÉ CLIENT ET CÔTÉ SERVEUR.............................................................................................................3JAVASCRIPT ET HTML...............................................................................................................................................3

Balise Script ..........................................................................................................................................................4

VARIABLES ET DONNÉES.....................................................................................................................................4

DÉCLARATION DE VARIABLES (VAR)..........................................................................................................................4TYPES PRIMITIFS........................................................................................................................................................4

Booléen (Boolean).................................................................................................................................................4Nombre (Number) .................................................................................................................................................4Chaîne (String)......................................................................................................................................................5Tableaux................................................................................................................................................................5Date.......................................................................................................................................................................5Conversion de types ..............................................................................................................................................6

OPÉRATEURS..............................................................................................................................................................6Opérateurs arithmétiques......................................................................................................................................6Opérateurs relationnels.........................................................................................................................................7Opérateurs logiques ..............................................................................................................................................7Opérateurs bit à bit ...............................................................................................................................................7Opérateurs unaires spéciaux.................................................................................................................................7Opérateurs d'affectation........................................................................................................................................7Autres opérateurs ..................................................................................................................................................8

CONTRÔLE DE FLUX...................................................................................................................................................8If Else ....................................................................................................................................................................8while ......................................................................................................................................................................8for..........................................................................................................................................................................8

LES FONCTIONS ......................................................................................................................................................9

LES OBJETS...............................................................................................................................................................9

INTRODUCTION..........................................................................................................................................................9LES MÉTHODES DES OBJETS........................................................................................................................................9PROTOTYPES ET CONSTRUCTEURS............................................................................................................................10EXEMPLES D'OBJETS DU NAVIGATEUR......................................................................................................................11

MODÈLE OBJET DU NAVIGATEUR..................................................................................................................12

OBJET DOCUMENT...................................................................................................................................................12

HTML ET JAVASCRIPT........................................................................................................................................13

FORMULAIRES..........................................................................................................................................................13Événements intrinsèques .....................................................................................................................................13Objets formulaires...............................................................................................................................................14

Accès aux objets FORMS.............................................................................................................................................. 14Cas du contrôle SELECT............................................................................................................................................... 15

Evènement focus..................................................................................................................................................16GESTION DES IMAGES...............................................................................................................................................16

Objet Image.........................................................................................................................................................17Déclaration d'une image................................................................................................................................................. 17Relation avec les balises IMG........................................................................................................................................ 17

DYNAMIC HTML....................................................................................................................................................17

UTILISATION DES BALISES <DIV> ET <LAYER>....................................................................................................18Manipuler une balise DIV avec Netscape ...........................................................................................................18Manipuler une balise DIV avec Internet Explorer ..............................................................................................18

LES COOKIES .........................................................................................................................................................18

COOKIES POURQUOI FAIRE ? ....................................................................................................................................19CRÉER UN COOKIE....................................................................................................................................................19


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Balise Script

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Variables et Données

Déclaration de variables (var)

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var toto ;

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titi = true;tutu = false;

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nombre1 = 10.25;nombre2 = 17;nombre3 = 1.05e+14nombre4 = 0xFF52 // Nombre hexadécimal

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Chaîne (String)

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Tableaux

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var jours= new Array(7);jour[0] = "Lundi";jour[1] = "Mardi";jour[2] = "Mercredi";…

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var jours= new Array("Lundi", "Mardi", "Mercredi" … );

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var matrice = new Array(2);

matrice[0] = new Array(2);matrice[1] = new Array(2);

matrice[0][0] = 1;matrice[1][0] = 2;matrice[0][1] = 3;matrice[1][1] = 4;

Date

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Conversion de types

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Opérateurs

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Opérateurs bit à bit

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b = a + (d++ );

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b = a + ( --d );b = a + (d – 1 );

Opérateurs d'affectation

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if ( x < 5 )alert(' x est strictement inférieur à 5');

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while ( condition )instruction ou bloc

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function nom ( paramètres ){instructions et éventuellement return pour renvoyer une données}

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function bonjour ( nom ){return ( " Bonjour " + nom);}

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chaine = bonjour ( "Didier");

Les objets

Introduction

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var contact = new Object;

contact.nom = "VALET";contact.prenom = "Génaël';contact.tel = "0146511521"

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Les méthodes des objets

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function afficher(){document.write(" Le nom est : " + this.nom);document.write(" Le prénom est : " + this.prenom);document.write(" Le tél est : " + this.tel );}

var contact = new Object;contact.nom = "DUPOND";contact.prenom = "Lajoie";contact.tel = "0144441122";contact.afficher_contact = afficher();

// Pour afficher l'objet, il suffira de

contact.afficher_contact();

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function creer_contact(nom , prenom, tel){this.nom = nom;this.prenom = prenom;this.tel = tel;}

// Vient alors la déclaration

var personne1 = new creer_contact ("DURANT", "Emile", "0223234545");personne1.afficher_contact = afficher;

personne1.afficher_contact();

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function creer_contact(nom , prenom, tel){this.nom = nom;this.prenom = prenom;this.tel = tel;}

créer_contact.prototype.afficher_contact = afficher();

// Vient alors la déclaration

var personne1 = new creer_contact ("DURANT", "Emile", "0223234545");var personne2 = new créer_contact("DUPONT","Lajoie","0145451212");

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A

alert ........................................11appCodeName......................12Applet JAVA..........................20appName...............................12appVersion............................12

B

Boolean ..............................4, 21button - input ........................13

C

C++ ..........................................3checkbox - input...................13Constructeurs .........................10Conversion de Types................6cookieEnabled.......................12Cookies...................................19CSS.........................................18

D

Date..........................................5Delete .......................................9DIV ........................................18document................................20Document ...............................12Dynamic HTML.....................17

E

ECMA Script............................3Else...........................................8

F

file - input ..............................13focus.......................................16for.............................................8Forms .....................................14Formulaires ............................13function ....................................9

G

GetCookie.............................. 20getDate.................................... 6getDay..................................... 6getHours................................. 6getMinutes.............................. 6getSeconds.............................. 6getTime................................... 6

H

hidden - input....................... 13HTML...................................... 3

I

If 8Image..................................... 17image - input ........................ 13InnerHTML ........................... 18

J

JAVA............................... 20, 21javaEnabled ......................... 12

L

langage - attribut ..... 4, 6, 7, 12LAYER................................... 18location .................................. 11

N

Navigator ............................... 12Null........................................ 21Number.............................. 4, 21

O

Object ...................................... 9Onclick - attribut ................. 14OnDblclick - attribut ........... 14onload - attribut ................... 13OnMousedown - attribut .... 14OnMousemove - attribut..... 14

OnMouseout.........................14OnMouseover - attribut.......14OnMouseup - attribut ..........14onunload - attribut ...............14Opérateurs................................6

P

password - input...................13platform ................................12Prototypes ..............................10

R

radio - input ..........................13reset - input...........................13

S

SCRIPT....................................3SELECT.................................15SetCookie...............................20setDate.....................................6setTime....................................6src - attribut ........................4, 6SSL.........................................19String..................................5, 21submit - input .......................13

T

Tableau ....................................5text - input.............................13type - attribut .....4, 6, 7, 12, 21

U

userAgent..............................12

V

var ............................................4

W

while.........................................8write .......................................10

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