<div class="layui-form">

    <textarea id="demo" style="display: none;"></textarea>

</div>

<script>    

layui.use("layedit", function(){

        var layedit = layui.layedit;

        var html = layedit.build("demo"); //建立编辑器

});

var content = layedit.getContent(html);

其中content就是得到的内容，具体用法见：https://www.layui.com/doc/modules/layedit.html

</script>