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Performance optimization for #1941 per @isiahmeadows suggestion

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This commit is contained in:
Ilya Sarantsev 2017-08-26 22:42:29 +03:00 • committed by Pierre-Yves Gérardy
parent 0986140ed5
commit 1ce8357866
1 changed files with 6 additions and 1 deletions
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7
render/hyperscript.js
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@ -6,6 +6,11 @@ var selectorParser = /(?:(^|#|\.)([^#\.\[\]]+))|(\[(.+?)(?:\s*=\s*("|'|)((?:\\["
var selectorCache = {} var selectorCache = {}
var hasOwn = {}.hasOwnProperty var hasOwn = {}.hasOwnProperty
function isEmpty(object) {
for (var key in object) if (hasOwn.call(object, key)) return false
return true
}
function compileSelector(selector) { function compileSelector(selector) {
var match, tag = "div", classes = [], attrs = {} var match, tag = "div", classes = [], attrs = {}
while (match = selectorParser.exec(selector)) { while (match = selectorParser.exec(selector)) {
@ -28,7 +33,7 @@ function execSelector(state, attrs, children) {
var hasAttrs = false, childList, text var hasAttrs = false, childList, text
var className = attrs.className || attrs.class var className = attrs.className || attrs.class
if (Object.keys(state.attrs).length && Object.keys(attrs).length) { if (!isEmpty(state.attrs) && !isEmpty(attrs)) {
var newAttrs = {} var newAttrs = {}
for(var key in attrs) { for(var key in attrs) {