南强小屋 Design By 杰米
vue.js 源代码学习笔记 core scedule.js，供大家参考，具体内容如下
/* @flow */
import type Watcher from './watcher'
import config from '../config'
import { callHook } from '../instance/lifecycle'
import {
warn,
nextTick,
devtools
} from '../util/index'
const queue: Array<Watcher> = []
let has: { [key: number]: "${watcher.expression}"`
: `in a component render function.`
),
watcher.vm
)
break
}
}
}
// reset scheduler before updated hook called
const oldQueue = queue.slice()
resetSchedulerState()
// call updated hooks
index = oldQueue.length
while (index--) {
watcher = oldQueue[index]
vm = watcher.vm
if (vm._watcher === watcher && vm._isMounted) {
callHook(vm, 'updated')
}
}
// devtool hook
/* istanbul ignore if */
if (devtools && config.devtools) {
devtools.emit('flush')
}
}
/**
* Push a watcher into the watcher queue.
* Jobs with duplicate IDs will be skipped unless it's
* pushed when the queue is being flushed.
*/
export function queueWatcher (watcher: Watcher) {
const id = watcher.id
if (has[id] == null) {
has[id] = true
if (!flushing) {
queue.push(watcher)
} else {
// if already flushing, splice the watcher based on its id
// if already past its id, it will be run next immediately.
let i = queue.length - 1
while (i >= 0 && queue[i].id > watcher.id) {
i--
}
queue.splice(Math.max(i, index) + 1, 0, watcher)
}
// queue the flush
if (!waiting) {
waiting = true
nextTick(flushSchedulerQueue)
}
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
南强小屋 Design By 杰米
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南强小屋 Design By 杰米
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