//单选题
<div class="layui-form-item" id="select_answer_radio">
    <label class="layui-form-label">答案选项</label>
    <div class="layui-input-block answer">
        <input  type="text" name="optext" lay-verify="title" placeholder="请输入答案1" class="layui-input answer_value">
        <input  type="radio" lay-skin='primary'  name="correct" value="true"  title="">
    </div>
    <div class="layui-input-block answer" >
        <input type="text" name="optext"   placeholder="请输入答案2" class="layui-input answer_value">
        <input  type="radio" lay-skin='primary'  name="correct" value="true"  title="">
    </div>
    <div class="layui-input-block answer">
        <input type="text" name="optext"   placeholder="请输入答案3" class="layui-input answer_value">
        <input  type="radio" lay-skin='primary'  name="correct"  value="true" title="">
    </div>
    <div class="layui-input-block answer">
        <input type="text" name="optext"  placeholder="请输入答案4" class="layui-input answer_value">
        <input  type="radio" lay-skin='primary'  name="correct" value="true"  title="">
    </div>
</div>


//多选题
<div class="layui-form-item" id="select_answer_checkbox">
    <label class="layui-form-label">答案选项</label>
    <div class="layui-input-block answer">
        <input  type="text" name="optext" lay-verify="title" autocomplete="off" placeholder="请输入答案1" class="layui-input answer_value">
        <input  type="checkbox" lay-skin='primary'  name="correct" value="true"  title="">
    </div>
    <div class="layui-input-block answer" >
        <input type="text" name="optext" lay-verify="title" autocomplete="off" placeholder="请输入答案2" class="layui-input answer_value">
        <input  type="checkbox" lay-skin='primary'  name="correct" value="true"  title="">
    </div>
    <div class="layui-input-block answer">
        <input type="text" name="optext" lay-verify="title" autocomplete="off" placeholder="请输入答案3" class="layui-input answer_value">
        <input  type="checkbox" lay-skin='primary'  name="correct" value="true"  title="">
    </div>
    <div class="layui-input-block answer">
        <input type="text" name="optext" lay-verify="title" autocomplete="off" placeholder="请输入答案4" class="layui-input answer_value">
        <input  type="checkbox" lay-skin='primary'  name="correct" value="true" title="">
    </div>
</div>

//获取input框的数组
var inputs =$("#select_answer_radio input[name='optext']");
//遍历input,并将数据放入input中
$.each(inputs,function (index,value) {
    $(this).val(oprextArr[index].optext);
})

//获取单选框的数组
var corrects = $("#select_answer_radio input:radio");
//遍历radio,并将数据放入radio中
$.each(corrects,function (index,value) {
    if(oprextArr[index].correct == 'YN01'){
        $(this).val(oprextArr[index].correct);
        $(this).prop('checked', true);
        layform.render('radio');
    }
})

//获取复选框的数组
var corrects = $("#select_answer_checkbox  input:checkbox");
//遍历checkbox,并将数据放入checkbox中
$.each(corrects,function (index,value) {
    if(oprextArr[index].correct == 'YN01'){
        $(this).val(oprextArr[index].correct);
        $(this).prop('checked', true);
        layform.render('checkbox');
    }
})