Vue v2.0.0-alpha.6 发布了，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。 更新内容：
NewNow works with vue-devtools 2.0.0 Properly support number keyCodes and custom keyCodes in v-on. Custom keyCodes can be defined in Vue.config.keyCodes: 1 | Vue.config.keyCodes.a = 65
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1 | <input @keyup.a="aPressed">
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The binding object in custom directive hooks now exposes the raw expression as a string: 1 | <div v-custom="msg"></div>
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1 2 3 | Vue.directive('custom', { bind (el, binding) { console.log(binding.expression)
}
})
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Fixed#3133 Fixed computed properties dependency collection error #3137 Fixed template error detection incorrectly detecting keywords Fixed output for undefined and null values for v-model Fixed unary tags handling in single-file component parser
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