// check all answers and update feedback spans function checkAllAnswers() let correctCount = 0; // iterate through problems and sync from inputs? but we already store in currentProblems via input events. // However to be safe, re-sync from input fields values for (let node of problemNodes) const inp = node.input; const idx = node.idx; let rawValue = inp.value.trim(); let numericAnswer = null; if (rawValue !== '') numericAnswer = Number(rawValue); if (isNaN(numericAnswer)) numericAnswer = null;
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// generate a single problem with random operation function generateProblem() const opType = rand(1, 3); // 1:add, 2:sub, 3:mult (gentle) if (opType === 1) // addition let a = rand(0, CONFIG.MAX_ADD_SUB); let b = rand(0, CONFIG.MAX_ADD_SUB); let sum = a + b; if (sum > CONFIG.MAX_ADD_SUB + 5) // rebalance not too big, keep under 30 a = rand(0, 12); b = rand(0, 12); sum = a + b; // check all answers and update feedback spans
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