Json数据格式：data[{GJname:"柱",id:1001},{GJname:"墙",id:1002},{GJname:"板",id:1003}]
前端Html数据：
<form class="layui-form" action="">
<div class="layui-input-inline" style="margin-top: 10px;">
<select id="GJliebiao" name="modules" lay-verify="GJliebiao" lay-search="">
<option value="">选择构件</option>
</select>
</div>
</form>
<script>
var LeftData=`${LeftData}`
</script>
后端js：
if (LeftData!="") {
LeftData=JSON.parse(LeftData)
$.each(LeftData, function(index, item) {
//赋值
if (item.Classification=="1") {
$('#GJliebiao').append(new Option(item.GJname, item.id));
}
});
//重新渲染select标签中的内容
layui.form.render("select");
}