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fix(web): prevent Previous page crash on malformed localStorage JSON #644

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Ashvin-KS wants to merge 1 commit into from
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fix(web): prevent Previous page crash on malformed localStorage JSON #644

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17 changes: 16 additions & 1 deletion eduaid_web/src/pages/Previous.jsx
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Original file line number Diff line number Diff line change
Expand Up @@ -11,7 +11,22 @@ const Previous = () => {

const getQuizzesFromLocalStorage = () => {
const quizzes = localStorage.getItem("last5Quizzes");
return quizzes ? JSON.parse(quizzes) : [];
if (!quizzes) {
return [];
}

try {
const parsedQuizzes = JSON.parse(quizzes);
if (!Array.isArray(parsedQuizzes)) {
localStorage.removeItem("last5Quizzes");
return [];
}

return parsedQuizzes;
} catch (error) {
localStorage.removeItem("last5Quizzes");
return [];
}
};

const [quizzes, setQuizzes] = React.useState(getQuizzesFromLocalStorage());
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