20以内加减法互动练习 - 知达AI助教 | 教育人工智能案例

二十以内的加减法，要求学生加上运算符号使等式成立，以html的形式输出，错误的题要求重做，正确的题跳过
以下是生成的HTML页面代码，满足您的需求：学生需要填写正确的运算符号使等式成立，并且错误的题目会要求重做，而正确的题目会跳过。

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20以内加减法互动练习

代码

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                    <input type
                 ="text" class
                 ="operator" data
                 -correct
                 ="${correctOperato
                 r}" maxlength="1">
                    <span>${b} = 
                 ${result}</span>
                `;
                questionsDiv
                 .appendChild
                 (questionDiv);
            }
        }
        // 检查答案
        function checkAnswers() {
            const operators = 
                document
                .querySelectorAll('
                .operator');
            let allCorrect = true;
            operators.forEach
                (operatorInput => {
                const userAnswer = 
                 operatorInput
                 .value.trim();
                const correctAnswer 
                 = operatorInput
                 .dataset.correct;
                if (userAnswer !== 
                 correctAnswer) {
                    allCorrect = 
                 false;
                    operatorInpu
 
 
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