How to delete cookies in vuejs: 1. Read the cookie through getCookie; 2. Set the cookie through setCookie; 3. Delete the cookie through "delCookie (name) {...}".
The operating environment of this article: Windows 7 system, Vue version 2.9.6, DELL G3 computer.
How to delete cookies in vuejs?
vue.js sets, gets and deletes cookies
The project needs the front-end to obtain the cookies returned by the background and make judgments based on them. I used it under the main.js entry file
Specific code:
new Vue({ el: '#app', router, template: '<App/>', components: { App }, methods:{ //读取cookie,需要注意的是cookie是不能存中文的,如果需要存中文,解决方法是后端先进行编码encode(),前端取出来之后用decodeURI('string')解码。(安卓可以取中文cookie,IOS不行) getCookie(name) { var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)"); if (arr = document.cookie.match(reg)){ return true; // return (arr[2]); }else{ return false } }, //设置cookie name为cookie的名字,value是值,expiredays为过期时间(天数) setCookie (name, value, expiredays) { var exdate = new Date(); exdate.setDate(exdate.getDate() + expiredays); document.cookie = c_name + "=" + escape(value) + ((expiredays == null) ? "" : ";expires=" + exdate.toGMTString()); }, //删除cookie delCookie (name) { var exp = new Date(); exp.setTime(exp.getTime() - 1); var cval = getCookie(name); if (cval != null) document.cookie = name + "=" + cval + ";expires=" + exp.toGMTString(); } }, created(){ this.setCookie('openId',123,2) if (this.getCookie('openId')) { console.log('has cookie') this.delCookie ('openId') }else{ console.log('has not cookie') } } })
Related recommendations: "vue.js tutorial"
The above is the detailed content of How to delete cookies in vuejs. For more information, please follow other related articles on the PHP Chinese website!

Vue.js' VirtualDOM is both a mirror of the real DOM, and not exactly. 1. Create and update: Vue.js creates a VirtualDOM tree based on component definitions, and updates VirtualDOM first when the state changes. 2. Differences and patching: Comparison of old and new VirtualDOMs through diff operations, and apply only the minimum changes to the real DOM. 3. Efficiency: VirtualDOM allows batch updates, reduces direct DOM operations, and optimizes the rendering process. VirtualDOM is a strategic tool for Vue.js to optimize UI updates.

Vue.js and React each have their own advantages in scalability and maintainability. 1) Vue.js is easy to use and is suitable for small projects. The Composition API improves the maintainability of large projects. 2) React is suitable for large and complex projects, with Hooks and virtual DOM improving performance and maintainability, but the learning curve is steeper.

The future trends and forecasts of Vue.js and React are: 1) Vue.js will be widely used in enterprise-level applications and have made breakthroughs in server-side rendering and static site generation; 2) React will innovate in server components and data acquisition, and further optimize the concurrency model.

Netflix's front-end technology stack is mainly based on React and Redux. 1.React is used to build high-performance single-page applications, and improves code reusability and maintenance through component development. 2. Redux is used for state management to ensure that state changes are predictable and traceable. 3. The toolchain includes Webpack, Babel, Jest and Enzyme to ensure code quality and performance. 4. Performance optimization is achieved through code segmentation, lazy loading and server-side rendering to improve user experience.

Vue.js is a progressive framework suitable for building highly interactive user interfaces. Its core functions include responsive systems, component development and routing management. 1) The responsive system realizes data monitoring through Object.defineProperty or Proxy, and automatically updates the interface. 2) Component development allows the interface to be split into reusable modules. 3) VueRouter supports single-page applications to improve user experience.

The main disadvantages of Vue.js include: 1. The ecosystem is relatively new, and third-party libraries and tools are not as rich as other frameworks; 2. The learning curve becomes steep in complex functions; 3. Community support and resources are not as extensive as React and Angular; 4. Performance problems may be encountered in large applications; 5. Version upgrades and compatibility challenges are greater.

Netflix uses React as its front-end framework. 1.React's component development and virtual DOM mechanism improve performance and development efficiency. 2. Use Webpack and Babel to optimize code construction and deployment. 3. Use code segmentation, server-side rendering and caching strategies for performance optimization.

Reasons for Vue.js' popularity include simplicity and easy learning, flexibility and high performance. 1) Its progressive framework design is suitable for beginners to learn step by step. 2) Component-based development improves code maintainability and team collaboration efficiency. 3) Responsive systems and virtual DOM improve rendering performance.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

PhpStorm Mac version
The latest (2018.2.1) professional PHP integrated development tool
