Informations de version JScript
Mise à jour : novembre 2007
JScript est un langage qui ne cesse d'évoluer et dont chaque nouvelle version introduit de nouvelles fonctionnalités. Pour tirer parti de toutes les fonctionnalités fournies par une version donnée du langage, vous avez besoin d'une version compatible de débogueur ou de moteur de script.
Versions et applications hôtes
Lorsque vous écrivez du code pour une application côté serveur ou un programme de ligne de commande, la version du compilateur et les versions de JScript qu'il prend en charge sont généralement connues. Toutefois, lors de l'écriture de scripts clients qui s'exécutent dans le moteur de script d'un navigateur, le script en cours d'exécution détecte la version du moteur de script. Dès identification de la version du moteur, un script écrit dans une version compatible de JScript peut être exécuté. Pour plus d'informations, consultez Détection des fonctionnalités du navigateur.
Le tableau suivant indique la version de Microsoft JScript implémentée par chaque application hôte.
Application hôte |
1.0 |
2.0 |
3.0 |
4.0 |
5.0 |
5.1 |
5.5 |
5.6 |
.NET |
8.0 |
---|---|---|---|---|---|---|---|---|---|---|
Microsoft Internet Explorer 3.0 |
x |
|
|
|
|
|
|
|
|
|
Microsoft Internet Information Server 3.0 |
|
x |
|
|
|
|
|
|
|
|
Microsoft Internet Explorer 4.0 |
|
|
x |
|
|
|
|
|
|
|
Microsoft Internet Information Server 4.0 |
|
|
x |
|
|
|
|
|
|
|
Microsoft Internet Explorer 5.0 |
|
|
|
|
x |
|
|
|
|
|
Microsoft Internet Explorer 5.01 |
|
|
|
|
|
x |
|
|
|
|
Microsoft Windows 2000 |
|
|
|
|
|
x |
|
|
|
|
Microsoft Internet Explorer 5.5 |
|
|
|
|
|
|
x |
|
|
|
Microsoft Windows Millennium Edition |
|
|
|
|
|
|
x |
|
|
|
Microsoft Internet Explorer 6.0 |
|
|
|
|
|
|
|
x |
|
|
Microsoft Windows XP |
|
|
|
|
|
|
|
x |
|
|
Microsoft Windows Server 2003 |
|
|
|
|
|
|
|
x |
|
|
Microsoft .NET Framework 1.0 |
|
|
|
|
|
|
|
|
x |
|
![]() |
---|
Le numéro de version indiqué par la fonction ScriptEngineMajorVersion et la variable de compilation conditionnelle @_jscript_version est toujours un nombre. De cette façon, il est possible d'effectuer des comparaisons numériques avec le numéro de version. Pour les applications de version .NET, la version indiquée est 7.x et non .NET. Cela signifie que les moteurs indiquant un numéro de version 7.x ou supérieur peuvent compiler du code JScript 8.0. |
Le tableau suivant dresse la liste des fonctionnalités du langage JScript ainsi que la version où elles ont été introduites pour la première fois.
Élément de langage |
1.0 |
2.0 |
3.0 |
4.0 |
5.0 |
5.5 |
.NET |
8.0 |
---|---|---|---|---|---|---|---|---|
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>>>= (décalage vers la droite non signé), opérateur d'assignation |
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