layui下拉选择框option判断选中

<select id="contentType" name="interest" lay-filter="contentType">
     <option value=""></option>
     <option value="1">语文</option>
     <option value="2">数学</option>
</select>

layui.use(['layer', 'jquery', 'form'], function () {//
            form = layui.form;
        form.on('select(contentType)', function(data){
            console.log(data.value)
            if(data.value==1){
				consolo.log("语文")
            }
        });
    });