{"id":3686,"date":"2018-03-26T15:55:30","date_gmt":"2018-03-26T07:55:30","guid":{"rendered":"http:\/\/gaigaiming.com\/?p=3686"},"modified":"2018-03-26T15:55:30","modified_gmt":"2018-03-26T07:55:30","slug":"vue%e4%ba%86%e8%a7%a3","status":"publish","type":"post","link":"https:\/\/www.gaigaiming.com\/index.php\/2018\/03\/26\/vue%e4%ba%86%e8%a7%a3\/","title":{"rendered":"vue\u4e86\u89e3"},"content":{"rendered":"\n<p>1\u3001\u5bf9\u4e8eMVVM\u7684\u7406\u89e3<\/p>\n\n\n\n<p>MVVM\u662fModel View 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\u8f7d\u5165\u524d\/\u540e &nbsp;\u66f4\u65b0\u524d\/\u540e\uff0c\u9500\u6bc1\u524d\/\u540e<\/p>\n\n\n\n<p>\u2463\u7b2c\u4e00\u6b21\u9875\u9762\u52a0\u8f7d\u4f1a\u89e6\u53d1\u90a3\u51e0\u4e2a\u94a9\u5b50<br>\u7b54\uff1a\u4f1a\u89e6\u53d1\u4e0b\u9762\u51e0\u4e2a\u94a9\u5b50 beforeCreate created beforeMount  mounted<\/p>\n\n\n\n<p>\u2464DOM\u6e32\u67d3\u5728\u54ea\u4e2a\u5468\u671f\u4e2d\u5df2\u7ecf\u5b8c\u6210\uff1f<br>\u7b54\uff1aDOM\u6e32\u67d3\u5728mounted\u4e2d\u5df2\u7ecf\u5b8c\u6210<\/p>\n\n\n\n<p>3\u3001VUE\u5b9e\u73b0\u6570\u636e\u53cc\u5411\u7ed1\u5b9a\u7684\u539f\u7406 object.definePropty()<br>UVE\u5b9e\u73b0\u6570\u636e\u53cc\u5411\u7ed1\u5b9a\u4e3b\u8981\u662f\uff1a\u91c7\u7528\u6570\u636e\u52ab\u6301\u63a5\u53e3\u53d1\u5e03\u8005\u8ba2\u9605\u6a21\u5f0f\u7684\u65b9\u5f0f\uff0c\u901a\u8fc7object.defineProperty()\u6765\u52ab\u6301\u5404\u4e2a\u5c5e\u6027\u7684setter\uff0cgetter\uff0c\u5728\u6570\u636e\u53d8\u52a8\u65f6\u53d1\u5e03\u6d88\u606f\u7ed9\u8ba2\u9605\u8005\uff0c\u89e6\u53d1\u76f8\u5e94\u76d1\u542c\u56de\u8c03\u3002\u6863\u628a\u4e00\u4e2a\u666e\u901a\u7684javascript\u5bf9\u8c61\u4f20\u7ed9vue\u5b9e\u4f8b\u6765\u4f5c\u4e3a\u5979\u7684data\u9009\u9879\u65f6\uff0cvue\u5c06\u4fbf\u5229\u5b83\u7684\u5c5e\u6027\uff0c\u7528Obeject.defineProperty\u5c06\u4ed6\u4eec\u8f6c\u4e3agetter\/setter\u3002\u7528\u6237\u770b\u4e0d\u5230getter\/setter\uff0c\u4f46\u662f\u5728\u5185\u90e8\u5b83\u4eec\u8ba9vue\u8ffd\u8e2a\u4f9d\u8d56\uff0c\u5728\u5c5e\u6027\u88ab\u8bbf\u95ee\u548c\u4fee\u6539\u65f6\u901a\u77e5\u53d8\u5316\u3002<br><br>vue\u7684\u6570\u636e\u53cc\u5411\u7ed1\u5b9a\u5c06MVVM\u4f5c\u4e3a\u6570\u636e\u7ed1\u5b9a\u7684\u5165\u53e3\uff0c\u6574\u5408observer\uff0ccompile\u548cwatcher\u4e09\u8005\uff0c\u901a\u8fc7observer\u6765\u76d1\u542c\u81ea\u5df1\u7684model\u7684\u6570\u636e\u53d8\u5316\uff0c\u901a\u8fc7compile\u6765\u89e3\u6790\u7f16\u8bd1\u6a21\u677f\u6307\u4ee4\uff08vue\u4e2d\u662f\u7528\u6765\u89e3\u6790<strong>{{}}<\/strong>),\u6700\u7ec8\u5229\u7528watcher\u642d\u8d77observe\u548ccompile\u4e4b\u95f4\u7684\u901a\u4fe1\u6865\u6881\uff0c\u8fbe\u5230\u6570\u636e\u53d8\u5316 \u2192\u89c6\u56fe\u66f4\u65b0\uff1b\u89c6\u56fe\u4ea4\u4e92\u53d8\u5316\uff08input\uff09\u2192\u6570\u636emodel\u53d8\u66f4\u53cc\u5411\u7ed1\u5b9a\u6548\u679c\u3002<\/p>\n\n\n\n<p>4\u3001VUE\u7ec4\u4ef6\u95f4\u7684\u53c2\u6570\u4f20\u503c<\/p>\n\n\n\n<p>\u2460\u7236\u7ec4\u4ef6\u548c\u5b50\u7ec4\u4ef6\u4f20\u503c<br>\u7236\u7ec4\u4ef6\u4f20\u7ed9\u5b50\u7ec4\u4ef6\uff1a\u5b50\u7ec4\u4ef6\u901a\u8fc7props\u65b9\u6cd5\u63a5\u53d7\u6570\u636e\uff1b<br>\u5b50\u7ec4\u4ef6\u4f20\u7ed9\u7236\u7ec4\u4ef6\uff1a$emit\u65b9\u6cd5\u4f20\u9012\u53c2\u6570<br>\u2461\u975e\u7236\u5b50\u7ec4\u4ef6\u95f4\u7684\u6570\u636e\u4f20\u9012\uff0c\u5144\u5f1f\u7ec4\u4ef6\u4f20\u503c<br>eventBus\uff0c\u5c31\u662f\u521b\u5efa\u4e00\u4e2a\u4e8b\u4ef6\u4e2d\u5fc3\uff0c\u76f8\u5f53\u4e8e\u4e2d\u8f6c\u7ad9\uff0c\u53ef\u4ee5\u7528\u5b83\u6765\u4f20\u9012\u4e8b\u4ef6\u548c\u63a5\u53d7\u4e8b\u4ef6\u3002\u9879\u76ee\u6bd4\u8f83\u5c0f\u65f6\uff0c\u7528\u8fd9\u4e2a\u6bd4\u8f83\u5408\u9002\u3002\uff08vuex\u4e5f\u53ef\u4ee5\uff09<\/p>\n\n\n\n<p>5\u3001VUE\u7684\u8def\u7531\u5b9e\u73b0\uff1ahash\u6a21\u5f0f\u548chistory\u6a21\u5f0f<br>hash\u6a21\u5f0f\uff1a\u5728\u6d4f\u89c8\u5668\u7b26\u53f7\u6709\u201c#\u201d\u4ee5\u53ca\u201c#\u201d\u540e\u9762\u7684\u5b57\u7b26\u79f0\u4e4b\u4e3ahash\uff0c\u7528window.location.hash\u8bfb\u53d6\uff1b<br>\u7279\u70b9\uff1ahash\u867d\u7136\u5728URL\u4e2d\uff0c\u4f46\u4e0d\u5305\u62ec\u5728HTTP\u8bf7\u6c42\u4e2d\uff1b\u7528\u6765\u6307\u5bfc\u6d4f\u89c8\u5668\u52a8\u4f5c\uff0c\u5bf9\u4e8e\u670d\u52a1\u7aef\u5b89\u5168\u65e0\u7528\uff0chash\u4e0d\u4f1a\u91cd\u8f7d\u9875\u9762\u3002<br>hash\u6a21\u5f0f\u4e0b\uff0c\u4ec5hash\u7b26\u53f7\u4e4b\u95f4\u7684\u5185\u5bb9\u4f1a\u88ab\u5305\u542b\u5728\u8bf7\u6c42\u4e2d\uff0c\u5982http\uff1axxxx.com,\u56e0\u6b64\u5bf9\u4e8e\u540e\u7aef\u6765\u8bf4\uff0c\u53ca\u65f6\u6ca1\u6709\u505a\u5bf9\u5230\u5bf9\u8def\u7531\u7684\u5168\u8986\u76d6\uff0c\u4e5f\u4e0d\u4f1a\u8fd4\u56de404<br><br>history\u6a21\u5f0fhistory\u6a21\u5f0f\u91c7\u7528h5\u4e60\u7279\u6027\uff0c\u4f7f\u7528\u4fe9\u65b0\u65b9\u6cd5\uff1apushState\uff08\uff09\uff0creplaceState\uff08\uff09\u53ef\u4ee5\u5bf9\u6d4f\u89c8\u5668\u5386\u53f2\u8bb0\u5f55\u6808\u8fdb\u884c\u4fee\u6539\uff0c\u4ee5\u53capopState\u4e8b\u4ef6\u7684\u76d1\u542c\u5230\u72b6\u6001\u53d8\u66f4\u3002<br>history\u6a21\u5f0f\u4e0b\uff0c\u524d\u7aef\u7684url\u5fc5\u987b\u548c\u5b9e\u9645\u60f3\u540e\u7aef\u53d1\u8d77\u8bf7\u6c42\u7684url\u4e00\u81f4\uff0c\u5982http\uff1a\/\/wwww.xxx.com\/list\/id\u3002\u540e\u7aef\u5982\u679c\u7f3a\u5c11\u4e86\u5bf9\/list\/id\u7684\u8def\u7531\u5904\u7406\uff0c\u5c06\u4f1a\u8fd4\u56de404\u3002vue-router\u5b98\u7f51\u63cf\u8ff0\uff1a\u4e0d\u8fc7\u8fd9\u79cd\u6a21\u5f0f\u8981\u73a9\u597d\uff0c\u6240\u4ee5\u8fd8\u8981\u540e\u53f0\u914d\u7f6e\u652f\u6301\u3002\u3002\u3002\u6240\u4ee5\u5462\uff0c\u4f60\u8981\u5728\u670d\u52a1\u7aef\u589e\u52a0\u4e00\u4e2a\u8986\u76d6\u6240\u6709\u60c5\u51b5\u7684\u5019\u9009\u5fd7\u613f\uff1a\u5982\u679curl\u5339\u914d\u4e0d\u5230\u4efb\u4f55\u9759\u6001\u8d44\u6e90\uff0c\u5219\u5e94\u8be5\u8fd4\u56de\u540c\u4e00\u4e2aindex.html\u9875\u9762\uff0c\u8fd9\u4e2a\u9875\u9762\u5c31\u662f\u4f60app\u4f9d\u8d56\u7684\u9875\u9762\u3002<\/p>\n\n\n\n<p>6\u3001vue\u4e0eangular\u4ee5\u53careact\u7684\u533a\u522b<br>api vue\u5168\u9762<\/p>\n\n\n\n<p>7\u3001vue\u7684\u8def\u7531\u94a9\u5b50\u51fd\u6570<br>\u9996\u9875\u53ef\u4ee5\u63a7\u5236\u5bfc\u822a\u8df3\u8f6c\uff0cbeforeEach afterEach\u7b49\uff0c\u4e00\u822c\u7528\u4e8e\u9875\u9762title\u4fee\u6539\uff0c\u4e00\u4e9b\u9700\u8981\u767b\u5f55\u624d\u80fd\u8c03\u6574\u9875\u9762\u7684\u91cd\u5b9a\u5411\u767b\u5f55<br>beforeEach \u6709 to from next \u4e09\u4e2a<br>to\uff1aroute\u5373\u5c06\u8fdb\u5165\u7684\u76ee\u6807\u8def\u7531\u5bf9\u8c61<br>from\uff1aroute\u5f53\u524d\u5bfc\u822a\u6b63\u8981\u79bb\u5f00\u7684\u8def\u7531<br>next\uff1afunction\u4e00\u5b9a\u8981\u8c03\u7528\u8be5\u65b9\u6cd5\u7684resolve\u8fd9\u4e2a\u94a9\u5b50\uff0c\u6267\u884c\u6548\u679c\u4f9d\u8d56next\uff08\uff09\u65b9\u6cd5\u7684\u8c03\u7528\u53c2\u6570\u3002\u53ef\u4ee5\u63a7\u5236\u9875\u9762\u7684\u8df3\u8f6c\u3002<\/p>\n\n\n\n<p>8\u3001VUEX\u662f\u4ec0\u4e48\uff1f\u600e\u4e48\u4f7f\u7528\uff1f\u54ea\u79cd\u529f\u80fd\u573a\u666f\u4f7f\u7528\u5b83\uff1f<br>\u53ea\u7528\u6765\u8bfb\u53d6\u7684\u72b6\u6001\u96c6\u4e2d\u653e\u5728store\u4e2d\uff1b\u6539\u53d8\u72b6\u6001\u7684\u65b9\u5f0f\u662f\u63d0\u4ea4mutations\uff0c\u8fd9\u4e2a\u662f\u540c\u6b65\u7684\u6570\u636e\uff0c\u5f02\u6b65\u903b\u8f91\u5e94\u8be5\u5c01\u88c5\u5728acticon\u91cc\u9762\u3002<br>\u5728main.js\u5f15\u5165store\uff0c\u6ce8\u5165\uff0c\u5efa\u4e00\u4e2a\u76ee\u5f55store . export<br>\u573a\u666f\uff1a\u5355\u9875\u9762\u5e94\u7528\u4e2d\uff0c\u7ec4\u4ef6\u4e4b\u95f4\u7684\u72b6\u6001\uff0c\u767b\u5f55\u72b6\u6001\u7b49<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/image-static.segmentfault.com\/131\/469\/131469924-5931124f9479e\" alt=\"\"\/><figcaption><br><br><br><\/figcaption><\/figure><\/div>\n\n\n\n<p>state<br>vuex\u4f7f\u7528\u5355\u4e00\u72b6\u6001\u6811\uff0c\u5373\u6bcf\u4e2a\u5e94\u7528\u5c06\u4ec5\u4ec5\u5305\u542b\u4e00\u4e2astroe\u5b9e\u4f8b\uff0c\u4f46\u5355\u4e00\u72b6\u6001\u6811\u548c\u6a21\u5757\u5316\u5e76\u4e0d\u51b2\u7a81\u3002\u5b58\u653e\u7684\u6570\u636e\u72b6\u6001\uff0c\u4e0d\u53ef\u4ee5\u76f4\u63a5\u4fee\u6539\u91cc\u9762\u7684\u6570\u636e\u3002<br>mutations<br>mutations\u5b9a\u4e49\u7684\u65b9\u6cd5\u52a8\u6001\u4fee\u6539vuex\u7684store\u7684\u72b6\u6001\u6216\u6570\u636e\u3002<br>getters<br>\u7c7b\u4f3cvue\u8ba1\u7b97\u5c5e\u6027\uff0c\u4e3b\u8981\u901a\u8fc7\u8fc7\u6ee4\u4e00\u4e9b\u6570\u636e<br>action<br>actions\u53ef\u4ee5\u7406\u89e3\u4e3a\u901a\u8fc7\u5c06mutations\u91cc\u9762\u5904\u7406\u6570\u636e\u7684\u65b9\u6cd5\u53d8\u6210\u53ef\u4ee5\u5f02\u6b65\u5904\u7406\u6570\u636e\u7684\u65b9\u6cd5\uff0c\u7b80\u5355\u8bf4\u5c31\u662f\u5f02\u6b65\u64cd\u4f5c\u6570\u636e\u3002view\u5c42\u901a\u8fc7store.dispath\u6765\u5206\u53d1action<\/p>\n\n\n\n<p>const store=new Vuex.Store({<br>  state:{<br>    count:0<br>  },<br>mutations:{<br>  increment(state){<br>state.count++<br>   }<br>   },<br>actions:{<br>increment(context){<br>context.commit(&#8216;increment&#8217;)}<br>}<br>})<\/p>\n\n\n\n<p><strong>modules<\/strong><br>\u9879\u76ee\u7279\u522b\u590d\u6742\u7684\u65f6\u5019\uff0c\u53ef\u4ee5\u8ba9\u6bcf\u4e00\u4e2a\u6a21\u5757\u62e5\u6709\u81ea\u5df1\u7684state\u3001mutation\u3001action\u3001getters\u4f7f\u5f97\u7ed3\u6784\u975e\u5e38\u6e05\u6670\uff0c\u65b9\u4fbf\u7ba1\u7406<br><br><\/p>\n\n\n\n<p>const moduleA = {<br>\n  state: { \u2026 },<br>\n  mutations: { \u2026 },<br>\n  actions: { \u2026 },<br>\n  getters: { \u2026 }<br>\n }<br>\nconst moduleB = {<br>\n  state: { \u2026 },<br>\n  mutations: { \u2026 },<br>\n  actions: { \u2026 }<br>\n }<\/p>\n\n\n\n<p>const store = new Vuex.Store({<br>   modules: {<br>     a: moduleA,<br>     b: moduleB<br> })<\/p>\n\n\n\n<p>9\u3001vue-cli\u5982\u4f55\u65b0\u589e\u81ea\u5b9a\u4e49\u6307\u4ee4\uff1f<br>\u2460\u521b\u5efa\u5c40\u90e8\u6307\u4ee4<br>var app = new Vue({<br>el:&#8217;#app&#8217;,<br>data:{<br><br>},<br><\/p>\n\n\n\n<p>\/\/ \u521b\u5efa\u6307\u4ee4(\u53ef\u4ee5\u591a\u4e2a)<br>\n    directives: {<br>\n        \/\/ \u6307\u4ee4\u540d\u79f0<br>\n        dir1: {<br>\n            inserted(el) {<br>\n                \/\/ \u6307\u4ee4\u4e2d\u7b2c\u4e00\u4e2a\u53c2\u6570\u662f\u5f53\u524d\u4f7f\u7528\u6307\u4ee4\u7684DOM<br>\n                console.log(el);<br>\n                console.log(arguments);<br>\n                \/\/ \u5bf9DOM\u8fdb\u884c\u64cd\u4f5c<br>\n                el.style.width = &#8216;200px&#8217;;<br>\n                el.style.height = &#8216;200px&#8217;;<br>\n                el.style.background = &#8216;#000&#8217;;<br>\n            }<br>\n        }<br>\n    }<\/p>\n\n\n\n<p><br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><\/code><\/pre>\n\n\n\n<p><br>})<\/p>\n\n\n\n<p>\u2461\u5168\u5c40\u6307\u4ee4<br>Vue.directive(&#8216;dir2&#8217;,{<br>inserted(el){<br><br>}<br>})<\/p>\n\n\n\n<p>\u2462\u6307\u4ee4\u7684\u4f7f\u7528<br><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;div id=\"app\">\n    &lt;div v-dir1>&lt;\/div>\n    &lt;div v-dir2>&lt;\/div>\n&lt;\/div>\n10\u3001vue\u5982\u4f55\u81ea\u5b9a\u4e49\u4e00\u4e2a\u8fc7\u6ee4\u5668\n{{msg| capitalize }}\nvar vm=new Vue({\n    el:\"#app\",\n    data:{\n        msg:''\n    },\n    filters: {\n      capitalize: function (value) {\n        if (!value) return ''\n        value = value.toString()\n        return value.charAt(0).toUpperCase() + value.slice(1)\n      }\n    }\n\n\u5168\u5c40\u5b9a\u4e49\u8fc7\u6ee4\u5668\nVue.filter('capitalize', function (value) {\n  if (!value) return ''\n  value = value.toString()\n  return value.charAt(0).toUpperCase() + value.slice(1)\n})\n\n\u8fc7\u6ee4\u5668\u63a5\u6536\u8868\u8fbe\u5f0f\u7684\u503c\uff08msg\uff09\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\u3002capitalize\u8fc7\u6ee4\u5668\u5c06\u4f1a\u53d7\u5230msg\u7684\u503c\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570<\/code><\/pre>\n\n\n\n<p>11\u3001\u5bf9keep-alive\u7684\u4e86\u89e3\uff1f<br>keep-alive\u662fvue\u5185\u7f6e\u7684\u4e00\u4e2a\u7ec4\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u88ab\u5305\u542b\u7684\u7ec4\u4ef6\u4fdd\u7559\u72b6\u6001\uff0c\u6216\u907f\u514d\u91cd\u65b0\u6e32\u67d3\u3002include\uff08\u5305\u542b\u7ec4\u4ef6\u7684\u7f13\u5b58\uff09 exclude\uff08\u6392\u9664\u7ec4\u4ef6\u7684\u4e0d\u7f13\u5b58\uff0c\u4f18\u5148\u7ea7\u5927\u4e8einclude\uff09<\/p>\n\n\n\n<p>\u4f7f\u7528\u65b9\u6cd5\uff1a<br>&lt;keep-alive include=&#8221;include_componens&#8221; exclude=&#8221;exclude_components&#8221;&gt;<br>  &lt;component&gt;<br>&lt;!&#8211; \u8be5\u7ec4\u4ef6\u662f\u5426\u7f13\u5b58\u53d6\u51b3\u4e8einclude\u548cexclude\u5c5e\u6027 &#8211;&gt;<br> 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