Questions tagged as 'javascript'

Tagged questions
2
answers

Singleton in JavaScript

How to implement the Singleton pattern in JavsScript in a simple and correct way - what assures me that the instance will be unique? I've seen some rather complex implementations, but would not that be enough? var xyz = xyz || (function (){...
asked by 15.11.2014 / 19:12
2
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What are the advantages and disadvantages of generating HTML on the client or server?

Historically, HTML has almost always been generated on the server, Javascript being used for few things like animations, validations, masks, etc. However, in recent times there has been a tendency to generate HTML (almost) entirely in the cli...
asked by 16.09.2014 / 15:55
3
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Best Practices in Declaring Variables in JavaScript

In the MDN variables section we have the following statement:    For that reason, it is recommended to always declare variables at the   top of their scope (the top of global code and the top of function   code) so it's clear which variable...
asked by 13.12.2016 / 20:26
4
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Creating and using custom events

Searching found Event and CustumEvent , both can be used to create events, and to control subscriptions, removals and issues of the event you should use EventTarget , but I did not understand how they work, for example, like m...
asked by 23.09.2018 / 03:02
3
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Remove spaces from a string from the second occurrence

I'm currently removing spaces using a simple replace() and adding a space that I must preserve between the third and fourth character using substr() let str = 'abc defghijk lmnop qrstuv wx y z' str = str.replace(/\s+/g, ''...
asked by 27.07.2018 / 16:34
2
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What does [] mean in angular.module

I'm a beginner in AngularJS and started reading about modules in an application. When I want to create a new module, I write the following line of code: var myAppModule = angular.module('myApp', []); As far as I understand, the myApp...
asked by 31.01.2017 / 17:43
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How to determine if a number is infinite using JavaScript?

Is it possible to check if a given value is an infinite number using JavaScript?     
asked by 06.09.2016 / 22:04
3
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How to move an object in javascript?

How to scroll through the object below with javascript? (in the same way that the arrays are run with the map ()). var obj = { "column01": "Coluna 01", "column02": "Coluna 02", "column03": "Coluna 03", "column04": "Coluna 04", "colum...
asked by 23.12.2016 / 19:30
3
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How to put scroll at end of div?

I have the following div <div style="height:300px;overflow-y:auto;"> ... </div> Inside it will have several texts and will make the scroll appear. When I refresh the page the scroll is at the beginning, but I need it to s...
asked by 30.08.2016 / 04:17
4
answers

How to get session cookie via javascript?

I need to make a script that when the user arrives in my utm via url, I should write a session cookie. This cookie will expire when the browser closes. Can someone help me with this?     
asked by 06.06.2016 / 15:28