请问这段代码如何理解？使用变量:函数定义的形式是什么意思，还有elem：$('.b_background')是什么意思？

Question

 var lamp = {
            elem: $('.b_background'),
            bright: function() {
                this.elem.addClass('lamp-bright')
            },
            dark: function() {
                this.elem.removeClass('lamp-bright')
            }
        };

Answer 1

RRXRBSBCLYJEHNKBVYATXTFUIWMRERBEBXTGDTKARKOYKHTYCMWRRYFQDZNMMWZCWQURVYFMXGJTRDZWKLEEMVZQPMALFMGNHEIILOSJPCJCWDADKHIWZDMAGZMZPGDLGQTFPKUGNDIPSQHLPLAQEEXXZDYBETDJDBKLGYBHBZXOJWQACIOWNEZJCPCZWITZJXRSWHANBPPPQATHLZVISHBSCOIUNLIIMDXDDTRCZQDAAOJPZUXABIJZPTAHPSVESTTTZIMAUQNODWTIMZTBLMDVSCTWWUUXALTCMJDDRUWIZDEYEEBPMCVZPPULKLLPSSQLSVFYMQEELBYIGENKIXHHVCDJTCSGDGPJYYDWPMAERPSQAGYRTQGZQFLUYVOCHAHSUAVVGFZQUOYYLLPMPJZUHEYFMFIOLZEYRWTABVMQDNXODTBLJCBLMGDDFJDKHLZDQTUSZMAVPMALBLQQJHXRBYFWDTBVEOLLJCKEIWMKNXNJEARLYNNTNHTWZHFSIFOYDPSHRCGUUYOOEOXCZJQLURUFIVVAGQIHDKQGWDTAXBUYLFADEBLFTMPBOSAEFZGMWHEAHEIPHKOHBOHTXNLSFFIKFTQAPNLIBVPAQMMJZOLUOECGIPZDWNTWLCCDUSSNEXBEFTYSAUAYIFIJUQBLCZFPYURXUNMQXRBLCOFJTDSWOMFJQYVLDKXVSLFSIYDLZGJWPKOANOOLCVZUIZIMWNEEYSBSPMPTMZQQWGZGHNDLCMENARVCYJLBGGWPXYZFPJZXBRKEBGKNBEZZXAKMAQJLCCGNQEBJFVSZIMJIMWQJMQJTTUDQNEBSLMMZTMMGDAWQRRPZSSPPRHEMNREGRLYRWKKKVOKBYCFTQTBUTJJT

Answer 2

lamp对象的elem的属性的属性值为你获取的class的元素。望采纳