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Recently, I have been printing reports in vue + elemnet, and then there is a demand to print the charts directly. After downloading the printing plug-in, I found that the chart part of the charts on the printing page is blank. After careful inspection, I found that the plug-in does not support printing canvas. Later, I found the following js on ...

Just passed, I also wish you all good health, everything goes well and no more bugs in your future life. I. Preface I wrote an article about uploading directory file: Solution of directory file upload (not only pictures and videos) in uni app system , this time to solve the file preview problem.   uni-app It is a framework that uses Vue.js to d ...

This tag can be configured in Node.JS to realize the segmented download of files. This article introduces Node.JS segment point continuation: the implementation method of Nginx configuration file segment download function. Please refer to it for your reference. Html5 provides a new Range tag to implemen ...

Written in the front: This article is a summary of personal daily work and study, non authoritative information, please bring your own thinking ^ - ^. When it comes to response, we will first think of the data attribute in the Vue instance, for example: reassign a certain attribute in data. If the attribute is used in page rendering, the page w ...

text MySQL started to support json natively in 5.7.8. This article will give a brief description of the usage of json types in mysql, hoping to be useful to you. CREATE TABLE testproject ( `id` int(10) unsigned NOT NULL AUTO_INCREMENT, `skill` JSON NOT NULL, `student` JSON NOT NULL, PRIMARY KEY (`id`) ); View table structure: ...

background In the hash mode of vue project, wechat sharing is needed. Support to pass multi parameter, no parameter, specify jump page, configurable Implementation ideas Due to the existence of hash mode symbol, there will be compatibility problems in different platforms. The shared page cannot jump to the specified page. So the idea is to s ...

Now let's talk about the request method in the project - axios Insert (from netizen): storage token suggests state+localStorageBecause state is a single page, you don't need to log in to open the second web page for the same browser, so you need to use cookies or localstorage. Why not use cookies: 1 ...

I. how Vuex is injected into Vue Mount $store to the prototype chain of vue when beforeCreate is executed. let Vue; function install(vm,storeName='$store'){ Vue = vm; Vue.mixin({ beforeCreate() { if(this.$options.store){ //Mount $store to Vue's prototype Vue.prototype[storeName] = thi ...

Problem: the front-end cross domain access to the back-end interface does not carry cookie s by default under the browser's security policy, so each request opens a new session. When we print the sessionID in the background, we will find that the sessionID of each request is different. Since each request is a new session, it is naturally null ...

When the project is very large, if all the states are concentrated in one object, the thermal planet software development (T: I8O-285I-O282 V forest) store object may become quite bloated. To solve this problem, Vuex allows us to divide the store into modules. Each module has its own state, mutation, action, getter, and even nested submodules ...