Four ways JavaScript determines whether a string is contained in another string

One, IndexOf () 1. DefinitionThe IndexOf () method returns the index of the specified string for the first occurrence of the string object, and returns 1 if the specified value is not found. (Array same concept)2. Syntaxstr.indexOf(searchValue[,

JavaScript Event Object

1. Event objects in the DOMA DOM-compatible browser will pass an event object into a handler. The event object is passed in regardless of the method (DOM0 level or DOM2 level ) that is used to specify the handler.var btn = document.getElementById

Technical principles of JavaScript event delegation

One of the hottest technologies in today's JavaScript technology World is ' event delegation '. Using Event delegation techniques allows you to avoid adding event listeners to a particular node, and instead, event listeners are added to their parent

JavaScript Scripting confusion

JavaScript Scripting ConfusionScript virus is a long-term active, and a type of virus completely different from the PE virus, the low threshold of production, the ever-changing way of confusing encryption, easy to spread, easy to evade detection,

JavaScript to avoid pits

1, js arithmetic accuracy problem =1 input >0.1+0.2==0.3 2 return >false 3 4 input >0.1+0.2 5 return >0.30000000000000004Weapon: The idea is very simple, first assigned to a variable, with tofixed (reserved decimal place), function rounding, but

JavaScript Regular expression pattern matching (1)--Basic character matching

1 varPattern=/g. gle/;//dot symbol to match any character except line break2 varStr= ' G78gle ';3 Alert (pattern.test (str));4 5 6 varpattern=/go*gle/;//o*, representing 0 or more o7 varStr= ' Goooooooooooogle ';8 Alert (pattern.test (str));9 Ten

JS implements Baidu search, and js implements Baidu search

JS implements Baidu search, and js implements Baidu search Today, we will use JS to implement the baidu search function. The code below: HTML section: Baidu next, CSS Cascading Style section: Body {/*

Implementation of the Cross-origin upload function for a single image in VUE + UEditor, vueueditor

Implementation of the Cross-origin upload function for a single image in VUE + UEditor, vueueditor The official website of UEditor says that cross-origin of a single image is not provided, so it can only be solved by itself. I checked many online

Vue better-scroll rolling plug-in traps, vuebetter-scroll

Vue better-scroll rolling plug-in traps, vuebetter-scroll BetterScroll claims to be the best Mobile-side rolling plug-in currently, so its strength must exist. Or... haha. My personal feeling is still very useful. This article is not about

WeChat applet Date and Time selector usage, Applet Selector

How to Use the applet Date and Time Selector This article provides an example of a small program Date and Time selector accurate to seconds for your reference. The specific content is as follows: Implementation Principle Use the multi-column

Sample Code that uses mint-ui to implement provincial/municipal level-3 linkage effect,

Sample Code that uses mint-ui to implement provincial/municipal level-3 linkage effect, Reference plug-in: ELE. Me mint-ui component picker function, the specific API can refer to the official site description: http://mint-ui.github.io/docs/#/zh-cn2/

Vue todolist, todolist

Vue todolist, todolist Vue is a beginner recently and is the simplest todolist todolist {{ listitem. text }}   

How does the Vue interceptor handle token expiration? vuetoken

How does the Vue interceptor handle token expiration? vuetoken In a recent project, you need to add a token for each http request, which undoubtedly increases the workload. The vue interceptor interceptors can solve our needs. Vue. http.

Laravel integrates the full Bootstrap 4 solution (recommended), laravelbootstrap

Laravel integrates the full Bootstrap 4 solution (recommended), laravelbootstrap If you want to use bootstrap 4 directly on laravel5.5, it should be wise, because the final version of bootstrap 4 has been released, so there is good news here, that

Vue Event Response progress bar component instance details, vue progress bar instance details

Vue Event Response progress bar component instance details, vue progress bar instance details Preface I found many vue progress bar components that do not contain drag and drop events and click events. The input range is a native component that

How to Use vue2.0 datepicker, vue2.0datepicker

How to Use vue2.0 datepicker, vue2.0datepicker 1. Use vue-cli scaffolding to create a vue project. Use vue-datepicker on the order list page. Follow the instructions in this document. After installation, useMyDatepicker from 'vue-datepicker 'command

JS design pattern: Observer pattern to change the amount in the page in real time. Design Pattern quota

JS design pattern: Observer pattern to change the amount in the page in real time. Design Pattern quota The example in this article describes how to change the amount in the page in real time in the Observer mode of JS design mode. We will share

Comparison and Analysis of Express and Koa2 in nodejs, and comparison and analysis of nodejskoa2

Comparison and Analysis of Express and Koa2 in nodejs, and comparison and analysis of nodejskoa2 I can see a question: will Express be replaced by Koa2? . Just a little research on Express and koa, so I gave a simple answer. 1. Conclusion At

Detailed description of using React for component library development, detailed description of react Component Library

Detailed description of using React for component library development, detailed description of react Component Library Recently, we used react to encapsulate a [Component Library] for daily business needs, which roughly records the experiences of

Out-of-number! Solve the Problem of github + hexo + yilia comment plug-in !!!, Githubhexo

Out-of-number! Solve the Problem of github + hexo + yilia comment plug-in !!!, Githubhexo First wave! My website -- http://www.wenzheng.club/ Ps: the effect is good. QQ logon, emoticons, and gif animated comments are supported! Plug-ins use Korean

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