1、=3對(duì)生命周期鉤子函數(shù)的理解對(duì)生命周期鉤子函數(shù)的理解，其實(shí)這也是我看得別人的然后自己修改了一下，下面是我做的實(shí)驗(yàn),messagevinputtype=buttonclick=changevalue=E新數(shù)據(jù)/vinputtype=buttonclick=destroyvalue/肖毀數(shù)據(jù)/vscripttype=text/javascriptvarvm=newVue(el:#app,data:message:WelcomeVue,methods:change()this.message=Daturaisme;,destroy()vm.$destroy();,beforeCreate:funct

2、ion()console.group(beforeCreate創(chuàng)建前狀態(tài)=);console.log(%c%s,color:red,el:+this.$el);/undefinedconsole.log(%c%s,color:red,data:+this.$data);/undefinedconsole.log(%c%s,color:red,message:+this.message);/undefined,created:function()console.group(created創(chuàng)建完畢狀態(tài)=);console.log(%c%s,color:red,el:+this.$el);/unde

3、finedconsole.log(%c%s,color:green,data:+this.$data);/objectObject=已被初始化console.log(%c%s,color:green,message:+this.message);/WelcomeVue=已被初始化,beforeMount:function()console.group(beforeMount掛載前狀態(tài)=);console.log(%c%s,color:green,el:+(this.$el);/已被初始化console.log(this.$el);/當(dāng)前掛在的元素console.log(%c%s,color:g

4、reen,data:+this.$data);/已被初始化console.log(%c%s,color:green,message:+this.message);/已被初始化,mounted:function()console.group(mounted掛載結(jié)束狀態(tài)=);console.log(%c%s,color:green,el:+this.$el);/已被初始化console.log(this.$el);console.log(%c%s,color:green,data:+this.$data);/已被初始化console.log(%c%s,color:green,message:+th

5、is.message);/已被初始化,beforeUpdate:function()alert(更新前狀態(tài)1);console.group(beforeUpdate更新前狀態(tài)=);/這里指的是頁(yè)面渲染新數(shù)據(jù)之前console.log(%c%s,color:green,el:+this.$el);console.log(this.$el);console.log(%c%s,color:green,data:+this.$data);console.log(%c%s,color:green,message:+this.message);alert(更新前狀態(tài)2);,updated:function

6、()console.group(updated更新完成狀態(tài)=);console.log(%c%s,color:green,el:+this.$el);console.log(this.$el);console.log(%c%s,color:green,data:+this.$data);console.log(%c%s,color:green,message:+this.message);,beforeDestroy:function()console.group(beforeDestroy肖毀前狀態(tài)=);console.log(%c%s,color:red,el:+this.$el);con

7、sole.log(this.$el);console.log(%c%s,color:red,data:+this.$data);console.log(%c%s,color:red,message:+this.message);,destroyed:function()console.group(destroyed肖毀完成狀態(tài)=);console.log(%c%s,color:red,el:+this.$el);console.log(this.$el);console.log(%c%s,color:red,data:+this.$data);console.log(%c%s,color:re

8、d,message:+this.message)=3)看瀏覽器：頁(yè)面是這樣的:Exfl1、先看控制臺(tái)亡藺“飛CorsoIeS:lpcsNetworkPerfxmanze亡rrory也ppi正亦=3=3Qt：zpFilterD羽Itevels=3thsVueextensionforabetterdselopnenteKperisncenttM：Ei二hub,匚on八醫(yī)帖八Yaurunning7jemcfevel-ipnentrroderlakeiuretdturncrprixuctionhoHewhndepLqjin?forproduction.semretipsanttds:*2已is；orm

9、f:!/；亡pLjyjiFnt!:“Tse-forsCreatEWMMtS=el:ojrdefineddsta:urdefinednesscge:undefinedcreated暮舉擾態(tài):si:undefineddteta:objectObjectine55ap:UelconeVueTe-forscunt掛載前狀在=3el:cbjieztHTMLDivElEmenTUjirressaee:-rresiaEe；/pinputtyp=bu-lonzlict=chagevalue=更新數(shù)梔：di護(hù)daze:cbjeztObjectnesscge:helcoiEVuenounted隹驕?zhǔn)鵂钤?:obj

10、ect-nTMLDivEleKnt；tpXhelcoffiVue我們能發(fā)現(xiàn)掛載前el還是n去。,這里就是應(yīng)用的VirtualDOM（虛擬Dom）技術(shù)，先把坑占住了。Lnpit二應(yīng)=Mt。沁u日銷富數(shù)據(jù)燈dis到后面mounted掛載的時(shí)候再把值渲染進(jìn)=3lata:objectObject2、點(diǎn)擊按鈕更新數(shù)據(jù)”上皿已皿=3=31）更新前狀態(tài)moiriTsd聲黠束匾=el:；csjeztHTMOivELsmenTcdivid=a,app,BWeLeoneLedaze:jjeztObject；message:ftElconeVuebeforeUpdate更術(shù)瞬:jject-nriDij：len?nt；ggt質(zhì)：I1h-ioj+1VelcnmeVje=3=3頁(yè)面是這樣的:=32）更新后Tbe+crUpdate更逍前唸頁(yè)面是這樣的:H1V=etanessage:Dat12be!robiectHTLDiEJenentlTdivid叩A(chǔ)_dta:objectGtject；rKSUge：Occursisnt*dc&trcyedj韻