js中getElem是getElement的简写吗？获取的是id还是name?

Question

var setting = {data:{simpleData:{enable:true,idKey:"id",pIdKey:"pId",rootPId:'0'}},
callback:{onClick:function(event, treeId, treeNode){
var beginApplyDate = getElem('beginEndDate');
var endApplyDate = getElem('endEndDate');
var id = treeNode.id == '0' ? '' :treeNode.id;
$('#zghMail').attr("src","${ctx}/zghmail/zghMail/list?office.id="+id+"&office.name="+treeNode.name.split('(')[0]+
"&beginApplyDate="+beginApplyDate+"&endApplyDate="+endApplyDate);
}
}
};

    请问：getElem是getElement的简写吗？获取的是id还是name?

Answer 1

getElem是人家用原生封装的方法，比如

 function$(elem){
        return document.querySelector(elem);
    },
    //使用css选择器选择一组元素
    :function$$(elem){
        return document.querySelectorAll(elem);
    },
        function getElem(id){
        return document.getElementById(id);
    }

引入之后，使用getElem(id) ,$(id)方法就可以直接获取到相应的元素。