Vue3鐨勬牳蹇冨姛鑳戒笌鍝嶅簲寮忓簲鐢ㄦ帰璁細瀹炶返鎸囧崡涓庢繁鍏ョ悊瑙?/p>涓€銆乂ue3姒傝堪

Vue.js 3锛堢畝绉癡ue3锛変綔涓篤ue.js 2鐨勪笅涓€浠ｇ増鏈紝鏃ㄥ湪鎻愪緵鏇撮珮鏁堛€佹洿鐜颁唬鐨勫紑鍙戜綋楠屻€俈ue3寮曞叆浜嗕竴绯诲垪鏂扮壒鎬э紝鍖呮嫭鏇寸畝娲佺殑璇硶銆佹€ц兘鏀硅繘銆佹洿濂界殑绫诲瀷绯荤粺闆嗘垚浠ュ強鏇村己澶х殑鍝嶅簲鏈哄埗銆傚畠涓哄ぇ鍨嬪簲鐢ㄥ拰澶嶆潅鐢ㄦ埛鐣岄潰鐨勫紑鍙戞彁渚涗簡浼樺寲鏂规銆?/p>浜屻€佸畨瑁呬笌閰嶇疆

瑕佸紑濮嬩娇鐢╒ue3锛岄鍏堥渶瑕佺‘淇濅綘鐨勫紑鍙戠幆澧冧腑宸插畨瑁匩ode.js锛堟帹鑽愮増鏈琋ode.js v14.x鍙婁互涓婏級鍜孨PM锛圢ode.js鍖呯鐞嗗櫒锛夈€傛帴涓嬫潵锛屾寜鐓т互涓嬫楠よ繘琛屽畨瑁咃細

1. 瀹夎Vue CLI 3锛岃繖鏄瀯寤篤ue搴旂敤鐨勫畼鏂硅剼鎵嬫灦锛歚npm install -g @vue/cli`銆?/p>

2. 鍒涘缓涓€涓柊鐨刅ue3椤圭洰锛歚vue create my-vue3-project`銆?/p>

3. 杩涘叆椤圭洰鐩綍锛歚cd my-vue3-project`銆?/p>

娉ㄦ剰锛歏ue3椤圭洰榛樿浣跨敤TypeScript锛屽鏋滀綘鏇村€惧悜浜庝娇鐢ㄧ函JavaScript锛屽彲浠ュ湪鍒濆鍖栭」鐩椂閫夋嫨鐩稿簲鐨勯€夐」銆傚湪鍒涘缓椤圭洰鏃讹紝浣犲彲浠ユ牴鎹笉鍚岀殑闇€姹傞€夋嫨閫傚悎鐨勬ā鏉匡紝濡傚崟鏂囦欢缁勪欢妯℃澘銆乂ue Router/Vuex妯℃澘绛夈€?/p>涓夈€佸搷搴斿紡绯荤粺鍩虹

鍦╒ue3涓紝鍝嶅簲寮忕郴缁熸槸鏍稿績鐗规€т箣涓€锛屽畠鍩轰簬鏁版嵁椹卞姩鐨勬ā鍨嬬‘淇濆簲鐢ㄧ殑鏁版嵁鐘舵€佸拰瑙嗗浘淇濇寔鍚屾銆傚綋鏁版嵁鍙樺寲鏃讹紝Vue浼氳嚜鍔ㄨЕ鍙戣鍥炬洿鏂帮紝浠庤€屽疄鐜版祦鐣呯殑鐢ㄦ埛浣撻獙銆?/p>

瀹炰緥婕旂ず鍝嶅簲寮忓彉閲忕殑搴旂敤锛?/p>

閫氳繃鍒涘缓鍝嶅簲寮忓璞℃潵瀹氫箟鏁版嵁锛?/p>

```javascript

const data = reactive({

message: 'Hello, Vue3!'

});

```

璁块棶鍜屼慨鏀瑰搷搴斿紡鏁版嵁锛?/p>

```javascript

console.log(data.message); // 杈撳嚭 "Hello, Vue3!"

data.message = 'Hello, Vue3! Updated!';

console.log(data.message); // 杈撳嚭 "Hello, Vue3! Updated!"

```

鍦╒ue3涓紝鏁版嵁鍙樺寲瑙﹀彂瑙嗗浘鏇存柊鐨勮繃绋嬭儗鍚庯紝Vue閲囩敤浜嗕緷璧栫洃瑙嗗拰浜嬩欢瑙﹀彂涓ょ鍏抽敭鏈哄埗銆傚綋鏁版嵁鍙戠敓鏀瑰彉鏃讹紝Vue閫氳繃渚濊禆鐩戣绯荤粺杩借釜鎵€鏈変緷璧栨鏁版嵁鐨勭粍浠舵垨璁＄畻灞炴€с€備竴鏃︽娴嬪埌渚濊禆鏁版嵁鐨勫彉鍖栵紝Vue浼氳嚜鍔ㄩ€氱煡鎵€鏈変緷璧栫殑缁勪欢鍜屽睘鎬ц繘琛岄噸鏂版覆鏌擄紝浠庤€屾洿鏂拌鍥俱€備互涓嬫槸楂樻晥绠＄悊鏁版嵁鍙樺寲鐨勫疄渚嬩唬鐮侊細

```javascript

const template = `

{{ message }}

Toggle Message`; // 瀹氫箟渚濊禆浜巑essage鏁版嵁鐨勭粍浠舵ā鏉裤€?/p>

const App = Vue.extend({

template,

data() {

return {

message: 'Default Message',

};

},

methods: {

toggleMessage() { // 瀹氫箟鍒囨崲娑堟伅鐨勬柟娉?/p>

this.message = this.message === 'Default Message' ? 'Updated Message' : 'Default Message';

},

},

});

绀轰緥浠ｇ爜灞曠ず鏁版嵁椹卞姩缁勪欢鐨勬瀯寤轰笌浣跨敤锛?/p>

璁╂垜浠€氳繃涓€娈电ず渚嬩唬鐮侊紝鏉ユ帰绱㈠浣曞畾涔変竴涓搷搴斿紡鏁版嵁椹卞姩鐨勭粍浠讹紝骞跺浣曞湪涓诲簲鐢ㄤ腑浣跨敤瀹冦€?/p>

```javascript

// 瀹氫箟涓€涓厖婊℃椿鍔涚殑鏁版嵁椹卞姩缁勪欢

const MyComponent = {

name: 'MyComponent',

props: {

message: {

type: String,

required: true

}

},

template: `

{{ message }}

`

};

// 灏嗙粍浠惰瀺鍏ユ垜浠殑涓诲簲鐢?/p>

const template = ``; // 鎴戜滑鍙互绋嶅悗鍦ㄥ簲鐢ㄤ腑濉厖鍐呭

const data = Vue.reactive({ message: '娆㈣繋鏉ュ埌缁勪欢涓栫晫锛? }); // 浣跨敤Vue鐨剅eactive鍒涘缓鍝嶅簲寮忔暟鎹?/p>

const App = Vue.extend({ template, data, components: { MyComponent } }); // 灏嗘ā鏉裤€佹暟鎹拰缁勪欢鏁村悎鍦ㄤ竴璧?/p>

const app = new App().$mount('app'); // 灏嗗簲鐢ㄦ寕杞藉埌鎸囧畾鐨凞OM鍏冪礌涓?/p>

```

鍝嶅簲寮忓彉閲忕殑甯哥敤鎿嶄綔涓庢渶浣冲疄璺电殑榄呭姏鎺㈢储

鍦ㄤ娇鐢ㄥ搷搴斿紡鏁版嵁鏃讹紝鏈変竴浜涢瓟娉曡埇鐨勬搷浣滃拰鏈€浣冲疄璺碉紝瀹冧滑灏嗗府鍔╂彁楂樹唬鐮佺殑缂栧啓鏁堢巼骞跺寮哄叾鍙淮鎶ゆ€с€傝窡闅忔垜浠殑鑴氭锛屼竴璧锋彮寮€杩欎簺绉樺瘑鐨勯潰绾卞惂锛?/p>

瑙ｉ攣鍝嶅簲寮忓彉閲忕殑鎿嶄綔鎸囧崡锛?/p>

璁块棶锛氬彧闇€閫氳繃绠€鍗曠殑瀵硅薄鐐圭鍙凤紝鍗冲彲杞绘澗璁块棶鍝嶅簲寮忓彉閲忥紝渚嬪 `data.message`銆?/p>

淇敼锛氬湪淇敼鍝嶅簲寮忓彉閲忔椂锛岃纭繚鏂板€间笌褰撳墠鍊肩被鍨嬬浉鍖归厤锛屼互淇濇寔鍏跺搷搴斿紡鐘舵€併€傞伩鍏嶄娇鐢?`data.message = value` 鐨勬柟寮忥紝鑰屾槸浣跨敤 `data.message = '鏂板€?`锛岃 Vue 鐨勪緷璧栫洃瑙嗙郴缁熺簿鍑嗚窡韪彉鍖栥€?馃敟馃敟馃敟锛堝湪鎺у埗鍙颁笅鐓藉姩鐑儏鐨勭伀鐒帮紒锛夝煍ヰ煍ヰ煍?榄旀硶瀹屾垚锛佸搱鍝堬紒