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[JavaScript] Afficher la valeur de retour d'un élément de formulaire aux fins de débogage
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title>Comment afficher la valeur de retour d'un élément de formulaire aux fins de débogage</title> | |
| </head> | |
| <body> | |
| <p><label for="date">Date</label> | |
| <input type="date" id="date" name="date"></p> | |
| <p><input type="button" onclick="displayDate();" value="Afficher" /></p> | |
| <p><label for="text">Texte</label> | |
| <input type="text" id="text" class="text" name="text"></p> | |
| <p><input type="button" onclick="displayText();" value="Afficher" /></p> | |
| <script> | |
| function displayDate() { | |
| /* Le type 'date' n'est pas pris en charge par tous les navigateurs. */ | |
| var value = document.getElementById('date').value; | |
| alert(value); | |
| } | |
| function displayText() { | |
| /* À titre didactique, nous récupérons ici la valeur en utilisant la classe et non l'id. */ | |
| var value = document.getElementsByClassName('text')[0].value; | |
| alert(value); | |
| } | |
| displayDate(); | |
| displayText(); | |
| </script> | |
| </body> | |
| </html> |
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