极客观点
项目管理
HarmonyOS
entry-runtime-with-compiler.js内
const mount = Vue.prototype.$mount
Vue.prototype.$mount = function (
el?: string | Element,
hydrating?: boolean
): Component {
el = el && query(el)
/* istanbul ignore if */
if (el === document.body || el === document.documentElement) {
process.env.NODE_ENV !== 'production' && warn(
`Do not mount Vue to <html> or <body> - mount to normal elements instead.`
)
return this
}
//太长了贴一部分/runtime/index.js
Vue.prototype.$mount = function (
el?: string | Element,
hydrating?: boolean
): Component {
el = el && inBrowser ? query(el) : undefined
return mountComponent(this, el, hydrating)
}然后我自己新建几个js试了下为什么不行呢
test.js
function va(){}
export {va}test1.js
import {va} from './test.js'
va.prototype.hei = function(){
alert(1)
console.log(1)
}test2.js
import {va} from './test.js'
const ob = va.prototype.hei
va.prototype.hei = function(){
alert(2)
console.log(2)
}test3.js
import {va} from './test.js'
var a = new va();
a.hei()最后只alert2,打印了2
ps:我为了保持相似所以建了好几个..但是为什么不行呢
源码中const mount = Vue.prototype.$mount
结尾又重新调用 所以执行了两次