Question

foreach ($question['a'] as $a) {
    ?>
    <div class="radio">   
            <input type="radio" name="answer" id="answer" value="<?php echo $count ?>"><label id="answerLabel" for="answer"><?php echo $a['name'] ?> </label>
            <?php $count = $count + 1; ?>
    </div>
<?php } ?>

$.ajax({
    ///url,data etc
    success: function (data) {
        $('#index').val(data.index);
        $answers = data.question.a;
        $answers.forEach(function(item) {
            console.log(item['name']);
            $('#answerLabel').html(item['name']);
        })
    }   
});

我正在尝试更新foreach循环中的标签文本，但只有第一个值更新，单选按钮也会消失。控制台日志显示了4个项目。

问题的var_dump ['a']：

array(4) {
  [0]=>
  array(4) {
    ["id"]=>
    string(2) "12"
    ["questionId"]=>
    string(1) "4"
    ["name"]=>
    string(7) "correct"
    ["correct"]=>
    string(1) "0"
  }
  [1]=>
  array(4) {
    ["id"]=>
    string(2) "10"
    ["questionId"]=>
    string(1) "4"
    ["name"]=>
    string(7) "correct"
    ["correct"]=>
    string(1) "0"
  }
  [2]=>
  array(4) {
    ["id"]=>
    string(1) "9"
    ["questionId"]=>
    string(1) "4"
    ["name"]=>
    string(7) "correct"
    ["correct"]=>
    string(1) "1"
  }
  [3]=>
  array(4) {
    ["id"]=>
    string(2) "11"
    ["questionId"]=>
    string(1) "4"
    ["name"]=>
    string(7) "correct"
    ["correct"]=>
    string(1) "0"
  }
}

基于jameshwart lopez的答案，我将$ count附加到标签的id，然后在ajax中使count = 1并在foreachloop中添加1。这解决了这个问题。

Answer 1

Id仅适用于唯一元素。在您的情况answerLabel中，您可以尝试连接名称或向该ID添加一些内容，使其成为唯一元素。

样品

    $count =0;
    foreach ($question['a'] as $a) {
        ?>
        <div class="radio">   
                <input type="radio" name="answer" id="answer<?php echo $count;?>" value="<?php echo $count ?>"><label id="answerLabel<?php echo $count;?>" for="answer"><?php echo $a['name'] ?> </label>
                <?php $count = $count + 1; ?>
        </div>
    <?php } ?>




           $.ajax({
                ///url,data etc
                success: function (data) {

                    $('#index').val(data.index);
                    $answers = data.question.a;
                    count =0;
                    $answers.forEach(function(item) {
                        console.log(item['name']);
                        $('#answerLabel'+count).html(item['name']);
                        count = count+1;
                    })
                }     

        });

希望有所帮助。

更新foreach循环内的标签文本

1 个答案: