Global loading has no effect in vue

wrote a global loading

let Loading = {}
// installflag
Loading.installed = false
Loading.install = function (Vue) {
    if (Loading.installed) return
    Vue.prototype.$loading = {}
    Vue.prototype.$loading.show = () => {
        // loading
        if (document.querySelector("-sharpvip-loading")) return
        // 1loading
        let LoadingTip = Vue.extend({
            template: `<div id="vip-loading">
                            <div class="loading"></div>
                       </div>`
        })
        // 2
        let tpl = new LoadingTip().$mount().$el
        // 3body
        document.body.appendChild(tpl)
        Loading.installed = true
    }
    Vue.prototype.$loading.hide = () => {
        let tpl = document.querySelector("-sharpvip-loading")
        document.body.removeChild(tpl)
    }
}
export default Loading


Vue.use(loading);

:
 this.$loading.show();

Javascript vue.js

Aug.23,2021

let tpl = new LoadingTip().$mount().$el
// 
// $mount(el)
Vue.extend({
    template: `<div id="vip-loading">
            <div class="loading"></div>
       </div>`,
       el
});

try the first time is effective

then call show because installed is true , and installed should control whether the plug-in is registered, but it is actually registered only once in main.js . This variable is redundant

you don't need to insert and delete div , install every time you insert dom, and control display .

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