time des elf init sta all troy ... ted

src\platforms\web\runtime\index.js

掛載

Vue.prototype.$mount = function (
  el?: string | Element,
  hydrating?: boolean
): Component {
  el = el && inBrowser ? query(el) : undefined
  return mountComponent(this, el, hydrating)
}

src\core\instance\lifecycle.js

updateComponent = () => {
      vm._update(vm._render(), hydrating)
    }
//...
  new Watcher(vm, updateComponent, noop, {
    before () {
      if (vm._isMounted) {
        callHook(vm, ‘beforeUpdate‘)
      }
    }
  }, true /* isRenderWatcher */)

src\core\instance\render.js
 

Vue.prototype._render = function (): VNode {
    const vm: Component = this
    const { render, _parentVnode } = vm.$options
　　 //...
    // set parent vnode. this allows render functions to have access
    // to the data on the placeholder node.
    vm.$vnode = _parentVnode
    // render self
    let vnode
    try {
      vnode = render.call(vm._renderProxy, vm.$createElement)
 

Vue.prototype._update = function (vnode: VNode, hydrating?: boolean) { const vm: Component = this const prevEl = vm.$el const prevVnode = vm._vnode const prevActiveInstance = activeInstance activeInstance = vm vm._vnode = vnode // Vue.prototype.__patch__ is injected in entry points // based on the rendering backend used. if (!prevVnode) { // initial render vm.$el = vm.__patch__(vm.$el, vnode, hydrating, false /* removeOnly */) } else { // updates vm.$el = vm.__patch__(prevVnode, vnode) } //src\core\vdom\patch.js return function patch (oldVnode, vnode, hydrating, removeOnly) { if (isUndef(vnode)) { if (isDef(oldVnode)) invokeDestroyHook(oldVnode) return }
let isInitialPatch = false const insertedVnodeQueue = []
if (isUndef(oldVnode)) { // empty mount (likely as component), create new root element isInitialPatch = true createElm(vnode, insertedVnodeQueue)

Vue技術內幕 出去看看吧 掛載