//配置项
var config = {
/**
* Option merge strategies (used in core/util/options)//选项合并策略
*/
optionMergeStrategies: Object.create(null),
/**
* Whether to suppress warnings.//是否抑制警告
*/
silent: false,
/**
* Show production mode//生产模式 tip message on boot?//提示信息引导
*/
productionTip: "development" !== 'production',
/**
* Whether to enable devtools//是否启用开发者工具
*/
devtools: "development" !== 'production',
/**
* Whether to record perf//是否记录性能
*/
performance: "development" !== 'production',
/**
* Error handler for watcher errors//错误处理观察错误
*/
errorHandler: null,
/**
* Ignore certain custom elements//忽略某些自定义元素
*/
ignoredElements: [],
/**
* Custom user key aliases for v-on//自定义用户键别名
*/
keyCodes: Object.create(null),
/**
* Check if a tag is reserved so that it cannot be registered as a//检查如果一个标签被保留所以它将不会被注册为一个组件
* component. This is platform-dependent and may be overwritten.//这是与平台相关的可能被覆盖
*/
isReservedTag: no,
/**
* Check if a tag is an unknown element.检查一个标签是否是未知的元素
* Platform-dependent.//平台相关
*/
isUnknownElement: no,
/**
* Get the namespace of an element//得到一个元素的命名空间
*/
getTagNamespace: noop,
/**
* Parse the real tag name for the specific platform.//针对特殊的平台解析真正的标签名称
*/
parsePlatformTagName: identity,
/**
* Check if an attribute must be bound using property, e.g. value//检查是否一个属性必须被限制用一个属性
* Platform-dependent.
*/
mustUseProp: no,
/**
* List of asset types that a component can own.//组件能拥有的资产类型列表
*/
_assetTypes: [
'component',
'directive',
'filter'
],
/**
* List of lifecycle hooks.//钩子的生命周期
*/
_lifecycleHooks: [
'beforeCreate',
'created',
'beforeMount',
'mounted',
'beforeUpdate',
'updated',
'beforeDestroy',
'destroyed',
'activated',
'deactivated'
],
/**
* Max circular updates allowed in a scheduler flush cycle.最大循环更新允许在一个调度冲洗循环
*/
_maxUpdateCount: 100
};