Vue.js 0.12.0 Beta2 发布，JavaScript 库

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#深圳# 6月10日 亚马逊AWSome Day云计算免费培训报名中
　　此版本更新内容如下：
改进

• 　　paramAttributes option has been renamed to props.
  
• 　　v-with has been removed. Now props are the only way to pass data to a child component.
  
• 　　v-component has been removed. Now all components should use the custom tag syntax. For dynamic components, a new syntax is introduced: .
  
• 　　v-partial and {{> partial}} have been removed.
  

　　目标是移除 API 的一些 cruft。
新特性

• 　　异步组件。示例：
  components: {  async: function (resolve) {    setTimeout(function () {
        resolve({
          template: 'I am async!'
        })
      }, 1000)
    }
  }
  
• 　　elementDirectives。示例：
  Vue.elementDirective('my-stuff', {  update: function () { /* ... */ }
  })
  

优化

• 　　props now support explicit one-way binding with the syntax of prop="{{* oneway}}"
  
• 　　props can now contain multiple mustache tags, e.g. prop="{{a}} b"
  
• 　　props can now contain filters, e.g. prop="{{a | reverse}}"
  
• 　　props can now contain expressions, e.g. prop="{{a + b}}"
  
• 　　When a prop's parent expression is not "settable", the prop binding will be automatically one-way.
  
• 　　All props are created and observed by default when a component is instantiated.
  
• 　　When a component with replace:true is compiled,
  attributes on its placeholder node are now properly merged with the
  attributes on the component's template root node. Details:
  
  
  
  • 　　If both nodes have class attributes, the class names are merged.
    
  • 　　If both nodes have the same directive attribute, they will be
    compiled respectively in their own scope. (placeholder directives in
    parent scope and template root directives in child scope)
    
  • 　　If both nodes have the same plain attribute, the template root node will take priority.
    
  
  
• 　　Errors in simple path getters are now suppressed by default. e.g. a.b.c when a === {}
  

　　此版本现已提供下载：https://github.com/yyx990803/vue/archive/0.12.0-beta2.zip。
　　Vue.js 是构建 Web 界面的 JavaScript 库，提供数据驱动的组件，还有简单灵活的 API，使得 MVVM 更简单。
　　支持的浏览器：https://saucelabs.com/u/vuejs