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Code Issues Releases Wiki Activity

use Promise to update head (#574)

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Naoyuki Kanezawa 2016-12-31 04:14:36 +09:00 committed by Guillermo Rauch
parent 1fbf324883
commit f7ee50323d
1 changed files with 5 additions and 5 deletions
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10
client/head-manager.js
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@ -10,14 +10,14 @@ const DOMAttributeNames = {
export default class HeadManager { export default class HeadManager {
constructor () { constructor () {
this.requestId = null this.updatePromise = null
} }
updateHead (head) { updateHead (head) {
// perform batch update const promise = this.updatePromise = Promise.resolve().then(() => {
window.cancelAnimationFrame(this.requestId) if (promise !== this.updatePromise) return
this.requestId = window.requestAnimationFrame(() => {
this.requestId = null this.updatePromise = null
this.doUpdateHead(head) this.doUpdateHead(head)
}) })
} }