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JAVASCRIPT

chaine de caractère dans une autres js

// Exemple d'une chaîne de caractères
    var str = "Lorem ipsum dolor sit amet, consectetur adipiscing elit."
    
    // Vérifie si la sous-chaîne existe dans la chaîne de caractères
    var index = str.indexOf("ipsum");    
    if(index !== -1){
        alert("La sous-chaîne existe!");
    } else{
        alert("La sous-chaîne n'existe pas!");
    }
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