{"id":65,"date":"2022-05-29T12:49:57","date_gmt":"2022-05-29T04:49:57","guid":{"rendered":"http:\/\/www.33weixin.com\/index\/?p=65"},"modified":"2022-05-29T12:51:51","modified_gmt":"2022-05-29T04:51:51","slug":"render-%e5%87%bd%e6%95%b0","status":"publish","type":"post","link":"http:\/\/www.33weixin.com\/index\/index.php\/2022\/05\/29\/render-%e5%87%bd%e6%95%b0\/","title":{"rendered":"Render \u51fd\u6570"},"content":{"rendered":"

\u57fa\u7840<\/h2>\n

Vue \u63a8\u8350\u4f7f\u7528\u5728\u7edd\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u4f7f\u7528 template \u6765\u521b\u5efa\u4f60\u7684 HTML\u3002\u7136\u800c\u5728\u4e00\u4e9b\u573a\u666f\u4e2d\uff0c\u4f60\u771f\u7684\u9700\u8981 JavaScript \u7684\u5b8c\u5168\u7f16\u7a0b\u7684\u80fd\u529b\uff0c\u8fd9\u5c31\u662f\u00a0render \u51fd\u6570<\/strong>\uff0c\u5b83\u6bd4 template \u66f4\u63a5\u8fd1\u7f16\u8bd1\u5668\u3002<\/p>\n

<h1<\/span>><\/span>\n  <a<\/span> name<\/span>=\"hello-world\"<\/span> href<\/span>=\"#hello-world\"<\/span>><\/span>\n    Hello world!\n  <\/a<\/span>><\/span>\n<\/h1<\/span>><\/span>\n<\/code><\/pre>\n
\u5728 HTML \u5c42\uff0c \u6211\u4eec\u51b3\u5b9a\u8fd9\u6837\u5b9a\u4e49\u7ec4\u4ef6\u63a5\u53e3\uff1a<\/p>\n
<anchored-heading<\/span> :level<\/span>=\"1\"<\/span>><\/span>Hello world!<\/anchored-heading<\/span>><\/span>\n<\/code><\/pre>\n
\u5f53\u6211\u4eec\u5f00\u59cb\u5199\u4e00\u4e2a\u901a\u8fc7\u00a0level<\/code>\u00a0prop \u52a8\u6001\u751f\u6210heading \u6807\u7b7e\u7684\u7ec4\u4ef6\uff0c\u4f60\u53ef\u5f88\u5feb\u80fd\u60f3\u5230\u8fd9\u6837\u5b9e\u73b0\uff1a<\/p>\n
<script<\/span> type<\/span>=\"text\/x-template\"<\/span> id<\/span>=\"anchored-heading-template\"<\/span>><\/span>\n  <div<\/span>><\/span>\n    <h1<\/span> v-if<\/span>=\"level === 1\"<\/span>><\/span>\n      <slot<\/span>><\/span><\/slot<\/span>><\/span>\n    <\/h1<\/span>><\/span>\n    <h2<\/span> v-if<\/span>=\"level === 2\"<\/span>><\/span>\n      <slot<\/span>><\/span><\/slot<\/span>><\/span>\n    <\/h2<\/span>><\/span>\n    <h3<\/span> v-if<\/span>=\"level === 3\"<\/span>><\/span>\n      <slot<\/span>><\/span><\/slot<\/span>><\/span>\n    <\/h3<\/span>><\/span>\n    <h4<\/span> v-if<\/span>=\"level === 4\"<\/span>><\/span>\n      <slot<\/span>><\/span><\/slot<\/span>><\/span>\n    <\/h4<\/span>><\/span>\n    <h5<\/span> v-if<\/span>=\"level === 5\"<\/span>><\/span>\n      <slot<\/span>><\/span><\/slot<\/span>><\/span>\n    <\/h5<\/span>><\/span>\n    <h6<\/span> v-if<\/span>=\"level === 6\"<\/span>><\/span>\n      <slot<\/span>><\/span><\/slot<\/span>><\/span>\n    <\/h6<\/span>><\/span>\n  <\/div<\/span>><\/span>\n<\/span><\/span><\/script<\/span>><\/span>\n<\/code><\/pre>\n
Vue.component('anchored-heading'<\/span>, {\n  template: '#anchored-heading-template'<\/span>,\n  props: {\n    level: {\n      type: Number<\/span>,\n      required: true<\/span>\n    }\n  }\n})\n<\/code><\/pre>\n
template \u5728\u8fd9\u79cd\u573a\u666f\u4e2d\u5c31\u8868\u73b0\u7684\u6709\u4e9b\u5197\u4f59\u4e86\u3002\u867d\u7136\u6211\u4eec\u91cd\u590d\u4f7f\u7528\u00a0<slot><\/slot><\/code>\u00a0\u6765\u63a5\u6536\u6bcf\u4e00\u4e2a\u7ea7\u522b\u7684\u6807\u9898\u6807\u7b7e\uff0c\u5728\u6807\u9898\u6807\u7b7e\u4e2d\u6dfb\u52a0\u76f8\u540c\u7684\u951a\u70b9\u5143\u7d20\u3002\u4f46\u662f\u4e9b\u90fd\u4f1a\u88ab\u5305\u88f9\u5728\u4e00\u4e2a\u65e0\u7528\u7684\u00a0div<\/code>\u00a0\u4e2d\uff0c\u56e0\u4e3a\u7ec4\u4ef6\u5fc5\u987b\u6709\u6839\u8282\u70b9\u3002<\/p>\n
\u867d\u7136\u6a21\u677f\u5728\u5927\u591a\u6570\u7ec4\u4ef6\u4e2d\u90fd\u975e\u5e38\u597d\u7528\uff0c\u4f46\u662f\u5728\u8fd9\u91cc\u5b83\u5c31\u4e0d\u662f\u5f88\u7b80\u6d01\u7684\u4e86\u3002\u90a3\u4e48\uff0c\u6211\u4eec\u6765\u5c1d\u8bd5\u4f7f\u7528\u00a0render<\/code>\u00a0\u51fd\u6570\u91cd\u5199\u4e0a\u9762\u7684\u4f8b\u5b50\uff1a<\/p>\n
Vue.component('anchored-heading'<\/span>, {\n  render: function<\/span> (createElement<\/span>) <\/span>{\n    return<\/span> createElement(\n      'h'<\/span> + this<\/span>.level,   \/\/ tag name \u6807\u7b7e\u540d\u79f0<\/span>\n      this<\/span>.$slots.default \/\/ \u5b50\u7ec4\u4ef6\u4e2d\u7684\u9635\u5217<\/span>\n    )\n  },\n  props: {\n    level: {\n      type: Number<\/span>,\n      required: true<\/span>\n    }\n  }\n})\n<\/code><\/pre>\n
\u7b80\u5355\u6e05\u6670\u5f88\u591a\uff01\u7b80\u5355\u6765\u8bf4\uff0c\u8fd9\u6837\u4ee3\u7801\u7cbe\u7b80\u5f88\u591a\uff0c\u4f46\u662f\u9700\u8981\u975e\u5e38\u719f\u6089 Vue \u7684\u5b9e\u4f8b\u5c5e\u6027\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u4f60\u9700\u8981\u77e5\u9053\u5f53\u4f60\u4e0d\u4f7f\u7528\u00a0slot<\/code>\u00a0\u5c5e\u6027\u5411\u7ec4\u4ef6\u4e2d\u4f20\u9012\u5185\u5bb9\u65f6\uff0c\u6bd4\u5982\u00a0anchored-heading<\/code>\u00a0\u4e2d\u7684\u00a0Hello world!<\/code>, \u8fd9\u4e9b\u5b50\u5143\u7d20\u88ab\u5b58\u50a8\u5728\u7ec4\u4ef6\u5b9e\u4f8b\u4e2d\u7684\u00a0$slots.default<\/code>\u4e2d\u3002\u5982\u679c\u4f60\u8fd8\u4e0d\u4e86\u89e3\uff0c\u00a0\u5728\u6df1\u5165 render \u51fd\u6570\u4e4b\u524d\u63a8\u8350\u9605\u8bfb\u00a0instance properties API<\/a>\u3002<\/strong><\/p>\n
createElement<\/code>\u00a0\u53c2\u6570<\/h2>\n
\u7b2c\u4e8c\u4ef6\u4f60\u9700\u8981\u719f\u6089\u7684\u662f\u5982\u4f55\u5728\u00a0createElement<\/code>\u00a0\u51fd\u6570\u4e2d\u751f\u6210\u6a21\u677f\u3002\u8fd9\u91cc\u662f\u00a0createElement<\/code>\u00a0\u63a5\u53d7\u7684\u53c2\u6570\uff1a<\/p>\n
\/\/ @returns {VNode}<\/span>\ncreateElement(\n  \/\/ {String | Object | Function}<\/span>\n  \/\/ \u4e00\u4e2a HTML \u6807\u7b7e\uff0c\u7ec4\u4ef6\u8bbe\u7f6e\uff0c\u6216\u4e00\u4e2a\u51fd\u6570<\/span>\n  \/\/ \u5fc5\u987b Return \u4e0a\u8ff0\u5176\u4e2d\u4e00\u4e2a<\/span>\n  'div'<\/span>,\n\n  \/\/ {Object}<\/span>\n  \/\/ \u4e00\u4e2a\u5bf9\u5e94\u5c5e\u6027\u7684\u6570\u636e\u5bf9\u8c61<\/span>\n  \/\/ \u60a8\u53ef\u4ee5\u5728 template \u4e2d\u4f7f\u7528.\u53ef\u9009\u9879.<\/span>\n  {\n    \/\/ (\u4e0b\u4e00\u7ae0\uff0c\u5c06\u8be6\u7ec6\u8bf4\u660e\u76f8\u5173\u7ec6\u8282)<\/span>\n  },\n\n  \/\/ {String | Array}<\/span>\n  \/\/ \u5b50\u8282\u70b9(VNodes). \u53ef\u9009\u9879.<\/span>\n  [\n    createElement('h1'<\/span>, 'hello world'<\/span>),\n    createElement(MyComponent, {\n      props: {\n        someProp: 'foo'<\/span>\n      }\n    }),\n    'bar'<\/span>\n  ]\n)\n<\/code><\/pre>\n
\u5b8c\u6574\u6570\u636e\u5bf9\u8c61<\/h3>\n
\u6709\u4e00\u4ef6\u4e8b\u8981\u6ce8\u610f\uff1a\u5728 templates \u4e2d\uff0cv-bind:class<\/code>\u00a0\u548c\u00a0v-bind:style<\/code>\u00a0\uff0c\u4f1a\u6709\u7279\u522b\u7684\u5904\u7406\uff0c\u4ed6\u4eec\u5728 VNode \u6570\u636e\u5bf9\u8c61\u4e2d\uff0c\u4e3a\u6700\u9ad8\u7ea7\u914d\u7f6e\u3002<\/p>\n
{\n  \/\/ \u548c`v-bind:class`\u4e00\u6837\u7684 API<\/span>\n  'class'<\/span>: {\n    foo: true<\/span>,\n    bar: false<\/span>\n  },\n  \/\/ \u548c`v-bind:style`\u4e00\u6837\u7684 API<\/span>\n  style: {\n    color: 'red'<\/span>,\n    fontSize: '14px'<\/span>\n  },\n  \/\/ \u6b63\u5e38\u7684 HTML \u7279\u6027<\/span>\n  attrs: {\n    id: 'foo'<\/span>\n  },\n  \/\/ \u7ec4\u4ef6 props<\/span>\n  props: {\n    myProp: 'bar'<\/span>\n  },\n  \/\/ DOM \u5c5e\u6027<\/span>\n  domProps: {\n    innerHTML: 'baz'<\/span>\n  },\n  \/\/ \u4e8b\u4ef6\u76d1\u542c\u5668\u57fa\u4e8e \"on\"<\/span>\n  \/\/ \u6240\u4ee5\u4e0d\u518d\u652f\u6301\u5982 v-on:keyup.enter \u4fee\u9970\u5668<\/span>\n  \/\/ \u9700\u8981\u624b\u52a8\u5339\u914d keyCode\u3002<\/span>\n  on: {\n    click: this<\/span>.clickHandler\n  },\n  \/\/ \u4ec5\u5bf9\u4e8e\u7ec4\u4ef6\uff0c\u7528\u4e8e\u76d1\u542c\u539f\u751f\u4e8b\u4ef6\uff0c\u800c\u4e0d\u662f\u7ec4\u4ef6\u4f7f\u7528 vm.$emit \u89e6\u53d1\u7684\u4e8b\u4ef6\u3002<\/span>\n  nativeOn: {\n    click: this<\/span>.nativeClickHandler\n  },\n  \/\/ \u81ea\u5b9a\u4e49\u6307\u4ee4. \u6ce8\u610f\u4e8b\u9879\uff1a\u4e0d\u80fd\u5bf9\u7ed1\u5b9a\u7684\u65e7\u503c\u8bbe\u503c<\/span>\n  \/\/ Vue \u4f1a\u4e3a\u60a8\u6301\u7eed\u8ffd\u8e28<\/span>\n  directives: [\n    {\n      name: 'my-custom-directive'<\/span>,\n      value: '2'<\/span>\n      expression: '1 + 1'<\/span>,\n      arg: 'foo'<\/span>,\n      modifiers: {\n        bar: true<\/span>\n      }\n    }\n  ],\n  \/\/ Scoped slots in the form of<\/span>\n  \/\/ { name: props => VNode | Array<VNode> }<\/span>\n  scopedSlots: {\n    default<\/span>: props => h('span'<\/span>, props.text)\n  },\n  \/\/ \u5982\u679c\u5b50\u7ec4\u4ef6\u6709\u5b9a\u4e49 slot \u7684\u540d\u79f0<\/span>\n  slot: 'name-of-slot'<\/span>\n  \/\/ \u5176\u4ed6\u7279\u6b8a\u9876\u5c42\u5c5e\u6027<\/span>\n  key: 'myKey'<\/span>,\n  ref: 'myRef'<\/span>\n}\n<\/code><\/pre>\n
\u5b8c\u6574\u793a\u4f8b<\/h3>\n
\u6709\u4e86\u8fd9\u65b9\u9762\u7684\u77e5\u8bc6\uff0c\u6211\u4eec\u73b0\u5728\u53ef\u4ee5\u5b8c\u6210\u6211\u4eec\u6700\u5f00\u59cb\u60f3\u5b9e\u73b0\u7684\u7ec4\u4ef6\uff1a<\/p>\n
var<\/span> getChildrenTextContent = function<\/span> (children<\/span>) <\/span>{\n  return<\/span> children.map(function<\/span> (node<\/span>) <\/span>{\n    return<\/span> node.children\n      ? getChildrenTextContent(node.children)\n      : node.text\n  }).join(''<\/span>)\n}\n\nVue.component('anchored-heading'<\/span>, {\n  render: function<\/span> (createElement<\/span>) <\/span>{\n    \/\/ create kebabCase id<\/span>\n    var<\/span> headingId = getChildrenTextContent(this<\/span>.$slots.default)\n      .toLowerCase()\n      .replace(\/\\W+\/g<\/span>, '-'<\/span>)\n      .replace(\/(^\\-|\\-$)\/g<\/span>, ''<\/span>)\n\n    return<\/span> createElement(\n      'h'<\/span> + this<\/span>.level,\n      [\n        createElement('a'<\/span>, {\n          attrs: {\n            name: headingId,\n            href: '#'<\/span> + headingId\n          }\n        }, this<\/span>.$slots.default)\n      ]\n    )\n  },\n  props: {\n    level: {\n      type: Number<\/span>,\n      required: true<\/span>\n    }\n  }\n})\n<\/code><\/pre>\n
\u7ea6\u675f<\/h3>\n
VNodes \u5fc5\u987b\u552f\u4e00<\/h4>\n
\u6240\u6709\u7ec4\u4ef6\u6811\u4e2d\u7684 VNodes \u5fc5\u987b\u552f\u4e00\u3002\u8fd9\u610f\u5473\u7740\uff0c\u4e0b\u9762\u7684 render function \u662f\u65e0\u6548\u7684\uff1a<\/p>\n
render: function<\/span> (createElement<\/span>) <\/span>{\n  var<\/span> myParagraphVNode = createElement('p'<\/span>, 'hi'<\/span>)\n  return<\/span> createElement('div'<\/span>, [\n    \/\/ Yikes - duplicate VNodes!<\/span>\n    myParagraphVNode, myParagraphVNode\n  ])\n}\n<\/code><\/pre>\n
\u5982\u679c\u4f60\u771f\u7684\u9700\u8981\u91cd\u590d\u5f88\u591a\u6b21\u7684\u5143\u7d20\/\u7ec4\u4ef6\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u5de5\u5382\u51fd\u6570\u6765\u5b9e\u73b0\u3002\u4f8b\u5982\uff0c\u4e0b\u9762\u8fd9\u4e2a\u4f8b\u5b50 render \u51fd\u6570\u5b8c\u7f8e\u6709\u6548\u5730\u6e32\u67d3\u4e86 20 \u4e2a\u91cd\u590d\u7684\u6bb5\u843d\uff1a<\/p>\n
render: function<\/span> (createElement<\/span>) <\/span>{\n  return<\/span> createElement('div'<\/span>,\n    Array<\/span>.apply(null<\/span>, { length: 20<\/span> }).map(function<\/span> () <\/span>{\n      return<\/span> createElement('p'<\/span>, 'hi'<\/span>)\n    })\n  )\n}\n<\/code><\/pre>\n
\u4f7f\u7528 JavaScript \u4ee3\u66ff\u6a21\u677f\u529f\u80fd<\/h2>\n
v-if<\/code>\u00a0and\u00a0v-for<\/code><\/h3>\n
\u65e0\u8bba\u4ec0\u4e48\u90fd\u53ef\u4ee5\u4f7f\u7528\u539f\u751f\u7684 JavaScript \u6765\u5b9e\u73b0\uff0cVue \u7684 render \u51fd\u6570\u4e0d\u4f1a\u63d0\u4f9b\u4e13\u7528\u7684 API\u3002\u6bd4\u5982\uff0c template \u4e2d\u7684\u00a0v-if<\/code>\u00a0\u548c\u00a0v-for<\/code>:<\/p>\n
<ul<\/span> v-if<\/span>=\"items.length\"<\/span>><\/span>\n  <li<\/span> v-for<\/span>=\"item in items\"<\/span>><\/span>{{ item.name }}<\/li<\/span>><\/span>\n<\/ul<\/span>><\/span>\n<p<\/span> v-else<\/span>><\/span>No items found.<\/p<\/span>><\/span>\n<\/code><\/pre>\n
\u8fd9\u4e9b\u90fd\u4f1a\u5728 render \u51fd\u6570\u4e2d\u88ab JavaScript \u7684\u00a0if<\/code>\/else<\/code>\u00a0\u548c\u00a0map<\/code>\u00a0\u91cd\u5199\uff1a<\/p>\n
render: function<\/span> (createElement<\/span>) <\/span>{\n  if<\/span> (this<\/span>.items.length) {\n    return<\/span> createElement('ul'<\/span>, this<\/span>.items.map(function<\/span> (item<\/span>) <\/span>{\n      return<\/span> createElement('li'<\/span>, item.name)\n    }))\n  } else<\/span> {\n    return<\/span> createElement('p'<\/span>, 'No items found.'<\/span>)\n  }\n}\n<\/code><\/pre>\n
v-model<\/code><\/h3>\n
There is no direct\u00a0v-model<\/code>\u00a0counterpart in render functions – you will have to implement the logic yourself:<\/p>\n
render: function<\/span> (createElement<\/span>) <\/span>{\n  var<\/span> self = this<\/span>\n  return<\/span> createElement('input'<\/span>, {\n    domProps: {\n      value: self.value\n    },\n    on: {\n      input: function<\/span> (e<\/span>) <\/span>{\n        self.value = e.target.value\n      }\n    }\n  })\n}\n<\/code><\/pre>\n
This is the cost of going lower-level, but it also gives you much more control over the interaction details compared to\u00a0v-model<\/code>.<\/p>\n
Slots<\/h3>\n
You can access static slot contents as Arrays of VNodes from\u00a0this.$slots<\/code><\/a>:<\/p>\n
render: function<\/span> (createElement<\/span>) <\/span>{\n  \/\/ <div><slot><\/slot><\/div><\/span>\n  return<\/span> createElement('div'<\/span>, this<\/span>.$slots.default)\n}\n<\/code><\/pre>\n
render: function<\/span> (createElement<\/span>) <\/span>{\n  \/\/ <div><slot :text=\"msg\"><\/slot><\/div><\/span>\n  return<\/span> createElement('div'<\/span>, [\n    this<\/span>.$scopedSlots.default({\n      text: this<\/span>.msg\n    })\n  ])\n}\n<\/code><\/pre>\n
To pass scoped slots to a child component using render functions, use the\u00a0scopedSlots<\/code>\u00a0field in VNode data:<\/p>\n
render (createElement) {\n  return<\/span> createElement('div'<\/span>, [\n    createElement('child'<\/span>, {\n      \/\/ pass scopedSlots in the data object<\/span>\n      \/\/ in the form of { name: props => VNode | Array<VNode> }<\/span>\n      scopedSlots: {\n        default<\/span>: function<\/span> (props<\/span>) <\/span>{\n          return<\/span> h('span'<\/span>, props.text)\n        }\n      }\n    })\n  ])\n}\n<\/code><\/pre>\n
JSX<\/h2>\n
\u5982\u679c\u4f60\u5199\u4e86\u5f88\u591a\u00a0render<\/code>\u00a0\u51fd\u6570\uff0c\u53ef\u80fd\u4f1a\u89c9\u5f97\u75db\u82e6\uff1a<\/p>\n
createElement(\n  'anchored-heading'<\/span>, {\n    props: {\n      level: 1<\/span>\n    }\n  }, [\n    createElement('span'<\/span>, 'Hello'<\/span>),\n    ' world!'<\/span>\n  ]\n)\n<\/code><\/pre>\n
\u7279\u522b\u662f\u6a21\u677f\u5982\u6b64\u7b80\u5355\u7684\u60c5\u51b5\u4e0b\uff1a<\/p>\n
<anchored-heading<\/span> :level<\/span>=\"1\"<\/span>><\/span>\n  <span<\/span>><\/span>Hello<\/span<\/span>><\/span> world!\n<\/anchored-heading<\/span>><\/span>\n<\/code><\/pre>\n
import<\/span> AnchoredHeading from<\/span> '.\/AnchoredHeading.vue'<\/span>\n\nnew<\/span> Vue({\n  el: '#demo'<\/span>,\n  render (h) {\n    return<\/span> (\n      <AnchoredHeading<\/span> level<\/span>={1}<\/span>><\/span>\n        <span<\/span>><\/span>Hello<\/span<\/span>><\/span> world!\n      <\/AnchoredHeading<\/span>><\/span><\/span>\n    )\n  }\n})\n<\/code><\/pre>\n
\u5c06 `h` \u4f5c\u4e3a `createElement` \u7684\u522b\u540d\u662f\u4e00\u4e2a\u901a\u7528\u60ef\u4f8b\uff0c\u4f60\u4f1a\u53d1\u73b0\u5728 Vue \u751f\u6001\u7cfb\u7edf\u4e2d\uff0c\u5b9e\u9645\u4e0a\u5fc5\u987b\u7528\u5230 JSX\uff0c\u5982\u679c\u5728\u4f5c\u7528\u57df\u4e2d `h` \u5931\u53bb\u4f5c\u7528\uff0c \u5728\u5e94\u7528\u4e2d\u4f1a\u89e6\u53d1\u62a5\u9519\u3002<\/p>\n
\u51fd\u6570\u5316\u7ec4\u4ef6<\/h2>\n
\u4e4b\u524d\u521b\u5efa\u7684\u951a\u70b9\u6807\u9898\u7ec4\u4ef6\u662f\u6bd4\u8f83\u7b80\u5355\uff0c\u6ca1\u6709\u7ba1\u7406\u6216\u8005\u76d1\u542c\u4efb\u4f55\u4f20\u9012\u7ed9\u4ed6\u7684\u72b6\u6001\uff0c\u4e5f\u6ca1\u6709\u751f\u547d\u5468\u671f\u65b9\u6cd5\u3002\u5b83\u53ea\u662f\u4e00\u4e2a\u63a5\u6536\u53c2\u6570\u7684\u51fd\u6570\u3002 \u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u6807\u8bb0\u7ec4\u4ef6\u4e3a\u00a0functional<\/code>\uff0c \u8fd9\u610f\u5473\u5b83\u662f\u65e0\u72b6\u6001\uff08\u6ca1\u6709\u00a0data<\/code>\uff09\uff0c\u65e0\u5b9e\u4f8b\uff08\u6ca1\u6709\u00a0this<\/code>\u00a0\u4e0a\u4e0b\u6587\uff09\u3002 \u4e00\u4e2a\u00a0\u51fd\u6570\u5316\u7ec4\u4ef6<\/strong>\u00a0\u5c31\u50cf\u8fd9\u6837\uff1a<\/p>\n
Vue.component('my-component'<\/span>, {\n  functional: true<\/span>,\n  \/\/ \u4e3a\u4e86\u5f25\u8865\u7f3a\u5c11\u7684\u5b9e\u4f8b<\/span>\n  \/\/ \u63d0\u4f9b\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f5c\u4e3a\u4e0a\u4e0b\u6587<\/span>\n  render: function<\/span> (createElement, context<\/span>) <\/span>{\n    \/\/ ...<\/span>\n  },\n  \/\/ Props \u53ef\u9009<\/span>\n  props: {\n    \/\/ ...<\/span>\n  }\n})\n<\/code><\/pre>\n
\u7ec4\u4ef6\u9700\u8981\u7684\u4e00\u5207\u90fd\u662f\u901a\u8fc7\u4e0a\u4e0b\u6587\u4f20\u9012\uff0c\u5305\u62ec\uff1a<\/p>\n
    \n
  • props<\/code>: \u63d0\u4f9bprops \u7684\u5bf9\u8c61<\/li>\n
  • children<\/code>: VNode \u5b50\u8282\u70b9\u7684\u6570\u7ec4<\/li>\n
  • slots<\/code>: slots \u5bf9\u8c61<\/li>\n
  • data<\/code>: \u4f20\u9012\u7ed9\u7ec4\u4ef6\u7684 data \u5bf9\u8c61<\/li>\n
  • parent<\/code>: \u5bf9\u7236\u7ec4\u4ef6\u7684\u5f15\u7528<\/li>\n<\/ul>\n
    \u5728\u6dfb\u52a0\u00a0functional: true<\/code>\u00a0\u4e4b\u540e\uff0c\u951a\u70b9\u6807\u9898\u7ec4\u4ef6\u7684 render \u51fd\u6570\u4e4b\u95f4\u7b80\u5355\u66f4\u65b0\u589e\u52a0\u00a0context<\/code>\u00a0\u53c2\u6570\uff0cthis.$slots.default<\/code>\u00a0\u66f4\u65b0\u4e3a\u00a0context.children<\/code>\uff0c\u4e4b\u540ethis.level<\/code>\u00a0\u66f4\u65b0\u4e3a\u00a0context.props.level<\/code>\u3002<\/p>\n
    \u51fd\u6570\u5316\u7ec4\u4ef6\u53ea\u662f\u4e00\u4e2a\u51fd\u6570\uff0c\u6240\u4ee5\u6e32\u67d3\u5f00\u9500\u4e5f\u4f4e\u5f88\u591a\u3002\u4f46\u540c\u6837\u5b83\u4e5f\u6709\u5b8c\u6574\u7684\u7ec4\u4ef6\u5c01\u88c5\uff0c\u4f60\u9700\u8981\u77e5\u9053\u8fd9\u4e9b\uff0c \u6bd4\u5982\uff1a<\/p>\n
      \n
    • \u7a0b\u5e8f\u5316\u5730\u5728\u591a\u4e2a\u7ec4\u4ef6\u4e2d\u9009\u62e9\u4e00\u4e2a<\/li>\n
    • \u5728\u5c06 children, props, data \u4f20\u9012\u7ed9\u5b50\u7ec4\u4ef6\u4e4b\u524d\u64cd\u4f5c\u5b83\u4eec\u3002<\/li>\n<\/ul>\n
      \u4e0b\u9762\u662f\u4e00\u4e2a\u4f9d\u8d56\u4f20\u5165 props \u7684\u503c\u7684\u00a0smart-list<\/code>\u00a0\u7ec4\u4ef6\u4f8b\u5b50\uff0c\u5b83\u80fd\u4ee3\u8868\u66f4\u591a\u5177\u4f53\u7684\u7ec4\u4ef6\uff1a<\/p>\n
      var<\/span> EmptyList = { \/* ... *\/<\/span> }\nvar<\/span> TableList = { \/* ... *\/<\/span> }\nvar<\/span> OrderedList = { \/* ... *\/<\/span> }\nvar<\/span> UnorderedList = { \/* ... *\/<\/span> }\n\nVue.component('smart-list'<\/span>, {\n  functional: true<\/span>,\n  render: function<\/span> (createElement, context<\/span>) <\/span>{\n    function<\/span> appropriateListComponent<\/span> () <\/span>{\n      var<\/span> items = context.props.items\n\n      if<\/span> (items.length === 0<\/span>)           return<\/span> EmptyList\n      if<\/span> (typeof<\/span> items[0<\/span>] === 'object'<\/span>) return<\/span> TableList\n      if<\/span> (context.props.isOrdered)      return<\/span> OrderedList\n\n      return<\/span> UnorderedList\n    }\n\n    return<\/span> createElement(\n      appropriateListComponent(),\n      context.data,\n      context.children\n    )\n  },\n  props: {\n    items: {\n      type: Array<\/span>,\n      required: true<\/span>\n    },\n    isOrdered: Boolean<\/span>\n  }\n})\n<\/code><\/pre>\n
      slots()<\/code>\u00a0\u548c\u00a0children<\/code>\u00a0\u5bf9\u6bd4<\/h3>\n
      \u4f60\u53ef\u80fd\u60f3\u77e5\u9053\u4e3a\u4ec0\u4e48\u540c\u65f6\u9700\u8981\u00a0slots()<\/code>\u00a0\u548c\u00a0children<\/code>\u3002slots().default<\/code>\u00a0\u4e0d\u662f\u548c\u00a0children<\/code>\u00a0\u7c7b\u4f3c\u7684\u5417\uff1f\u5728\u4e00\u4e9b\u573a\u666f\u4e2d\uff0c\u662f\u8fd9\u6837\uff0c\u4f46\u662f\u5982\u679c\u662f\u51fd\u6570\u5f0f\u7ec4\u4ef6\u548c\u4e0b\u9762\u8fd9\u6837\u7684 children \u5462\uff1f<\/p>\n
      <my-functional-component<\/span>><\/span>\n  <p<\/span> slot<\/span>=\"foo\"<\/span>><\/span>\n    first\n  <\/p<\/span>><\/span>\n  <p<\/span>><\/span>second<\/p<\/span>><\/span>\n<\/my-functional-component<\/span>><\/span>\n<\/code><\/pre>\n
      \u5bf9\u4e8e\u8fd9\u4e2a\u7ec4\u4ef6\uff0cchildren<\/code>\u00a0\u4f1a\u7ed9\u4f60\u4e24\u4e2a\u6bb5\u843d\u6807\u7b7e\uff0c\u800c\u00a0slots().default<\/code>\u00a0\u53ea\u4f1a\u4f20\u9012\u7b2c\u4e8c\u4e2a\u533f\u540d\u6bb5\u843d\u6807\u7b7e\uff0cslots().foo<\/code>\u00a0\u4f1a\u4f20\u9012\u7b2c\u4e00\u4e2a\u5177\u540d\u6bb5\u843d\u6807\u7b7e\u3002\u540c\u65f6\u62e5\u6709\u00a0children<\/code>\u00a0\u548c\u00a0slots()<\/code>\u00a0\uff0c\u56e0\u6b64\u4f60\u53ef\u4ee5\u9009\u62e9\u8ba9\u7ec4\u4ef6\u901a\u8fc7\u00a0slot()<\/code>\u00a0\u7cfb\u7edf\u5206\u53d1\u6216\u8005\u7b80\u5355\u7684\u901a\u8fc7\u00a0children<\/code>\u00a0\u63a5\u6536\uff0c\u8ba9\u5176\u4ed6\u7ec4\u4ef6\u53bb\u5904\u7406\u3002<\/p>\n
      \u6a21\u677f\u7f16\u8bd1<\/h2>\n
      \u4f60\u53ef\u80fd\u6709\u5174\u8da3\u77e5\u9053\uff0cVue \u7684\u6a21\u677f\u5b9e\u9645\u662f\u7f16\u8bd1\u6210\u4e86 render \u51fd\u6570\u3002\u8fd9\u662f\u4e00\u4e2a\u5b9e\u73b0\u7ec6\u8282\uff0c\u901a\u5e38\u4e0d\u9700\u8981\u5173\u5fc3\uff0c\u4f46\u5982\u679c\u4f60\u60f3\u770b\u770b\u6a21\u677f\u7684\u529f\u80fd\u662f\u600e\u6837\u88ab\u7f16\u8bd1\u7684\uff0c\u4f60\u4f1a\u53d1\u73b0\u4f1a\u975e\u5e38\u6709\u8da3\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528\u00a0Vue.compile<\/code>\u00a0\u6765\u5b9e\u65f6\u7f16\u8bd1\u6a21\u677f\u5b57\u7b26\u4e32\u7684\u7b80\u5355 demo\uff1a<\/p>\n
\u66f4\u591a\u5173\u4e8e JSX \u6620\u5c04\u5230 JavaScript\uff0c\u9605\u8bfb\u00a0\u4f7f\u7528\u6587\u6863<\/a>\u3002<\/p>\n
\u8fd9\u5c31\u662f\u4f1a\u6709\u4e00\u4e2a\u00a0Babel plugin<\/a>\u00a0\u63d2\u4ef6\uff0c\u7528\u4e8e\u5728 Vue \u4e2d\u4f7f\u7528 JSX \u8bed\u6cd5\u7684\u539f\u56e0\uff0c\u5b83\u53ef\u4ee5\u8ba9\u6211\u4eec\u56de\u5230\u4e8e\u66f4\u63a5\u8fd1\u6a21\u677f\u7684\u8bed\u6cd5\u4e0a\u3002<\/p>\n
And access scoped slots as functions that return VNodes from\u00a0this.$scopedSlots<\/code><\/a>:<\/p>\n