Top 7 nyttige JavaScript-værktøjer til webudviklere

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Many developers try to avoid getting their hands dirty with JavaScript as much as they can avoid it. There is a perception that JavaScript is untidy and encourages bad coding habits, because it doesn’t enforce rules as strictly as most other coding languages.

Yet this is also a strength. It makes developing things in JavaScript quick and easy, provided you know what you are doing. Developing code in JavaScript is often a more efficient process simply because you don’t have to spend as much time debugging, and you can see the results of any changes you make instantly.

If there’s a downside, it’s that some coders actually are lazy, and don’t test their code sufficiently before releasing it, which is why we see so many web pages that consume memory and CPU cycles to excess.

Fortunately one of the very best things about JavaScript is there are so many pre-existing tools that you can make use of. You don’t have to reinvent the wheel on every project. Some of these may even spare you the ordeal of doing any coding at all.

In this article, we’ll take a look at some of the most useful JavaScript tools and libraries available for you to use when you are working on your own projects. In the majority of cases, these tools are free or low cost, and we only selected those that don’t require a lot of effort to learn.

1. Tota11y

En af de vigtigste opgaver for enhver webudvikler er at sikre, at deres sider har god tilgængelighed. Det kan være vanskeligt at opnå perfektion, men vi skal i det mindste forsøge at få tilgængelighedsfaktoren til at være så god, som vi kan.

Tota11y JavaScript tool from Khan Academy does a very impressive job of analyzing your web pages for accessibility while you’re in the development phase, so you can provide real-time analysis of accessibility factors to your development team.

2. BrowserSync

Kom i gang med Browsersync er overhovedet ikke ligetil, men når du først har lært dig, hvordan du bruger det, vil du opdage, at det er uundværligt i testlaboratoriet. Test dit websted på flere browsere og enheder på samme tid.

En anden interessant funktion ved dette værktøj er, at det giver dig mulighed for at gashåndtere din forbindelse, så du kan simulere at indlæse siden på en langsommere forbindelse end det, du faktisk har.

There are other tools for testing on multiple browsers, but this is the only one we’ve found that also mirrors all your interactions with the page instantly across all your connected browsers and devices.

3. Chart.js

Der er så mange måder, diagrammer kan være nyttige, og en af ​​de mest elegante gratis løsninger, der også er let at konfigurere, skal være den meget navngivne Chart.js værktøj.

Ved hjælp af kun et meget simpelt script kan du oprette en forbløffende række diagrammer, og du kan endda kombinere dem med en database for at indlæse data dynamisk og generere friske diagrammer, hver gang dataene ændres. Du kan blande forskellige diagramtyper sammen, hvor det er fornuftigt at gøre det (for eksempel en kombineret linje og søjlediagram).

It works by using the HTML5 canvas, and you can create multiple canvases on the page to host multiple charts. Just make sure you give each canvas and chart a unique name so you don’t send data to the wrong target.

En anden cool funktion ved Chart.js er, at de diagrammer, den genererer, er fuldt ud responsive, so they’ll have a consistent look across a range of different screen sizes.

4. SamsaraJS

The unusual name choice for this tool (“samsara” in Buddhist tradition refers to the eternal cycle of suffering from which one is supposed to break free) may be an indication of how much work you’ll have to put in to master it, but it is capable of making your web page do amazing things.

The concept here is “layout animation”, and it’s extremely versatile. SamsaraJS giver dig fuld kontrol over layoutet, så du kan "flytte" det og ændre det, enten i henhold til en forudbestemt rækkefølge eller som reaktion på brugerinteraktion.

5. Kartograf

Hvis din webside vil drage fordel af at vise geografiske data i grafisk form, så Kartograf er det perfekte JavaScript-værktøj, du har brug for til dette formål.

Alle data kan modelleres med nøjagtighed på nålen og knyttes til specifikke placeringer på et kort med alt, der genereres i realtid SVG-grafik. Det betyder, at selv animation er mulig.

The best thing about this is how professional the end result looks. It’s certainly an interesting alternative to using more popular mapping solutions such as GoogleMaps, and doesn’t come with any unwanted extras.

En ting til, der får Kartograf til at skille sig ud er, at den har scripts til Python og JavaScript.

6. Rafael

This is an SVG engine that simplifies the task of drawing real-time SVG graphics (this is different from pre-complied SVG graphics). There are numerous advantages to drawing your vector graphics as they’re needed instead of using pre-compiled graphics.

Dette er teknologien på højt niveau webapplikationsprojekter som Kartograph (se ovenfor) og MCDU-emulator blev bygget med.

Mens Raphael bibliotek er ikke i aktiv udvikling på dette tidspunkt, det har allerede næsten alt hvad du har brug for for at skabe næsten alt hvad du vil, og der er ingen tvivl om, at det gør SVG-kodning meget lettere end at bruge almindelig SVG-syntaks.

7. Knockout.js

It’s not easy being a UI framework these days with so much competition around, but Knockout.js has something a little extra special. The learning curve has been flattened out with interactive tutorials. Beyond that, it’s a powerful and flexible framework compacted down to under 60KB in size.

Despite it’s small size, it gives you a lot of control over your DOM elements and lets you build fully interactive responsive hjemmesider hurtigt og nemt.

JavaScript isn’t bad

Much of the scorn that has been directed at JavaScript is a legacy from its earliest days, when it definitely wasn’t perfect, and unfortunately decided to incorrectly marry its name forever with Java.

Get to grips properly with JavaScript and you will discover it is a robust object oriented language that is ideal for developing online and offline applications very easily. This isn’t something that can be said about most languages out there.

Selv Java kræver langt større indsats, selvom det giver dig en masse foruddefinerede cross-platform værktøjer til at arbejde med.

The tools listed above are just seven very useful ones out of a palette of millions you could choose from. It’s certainly a language that is useful to know, and may well be the best language to master, since it provides the most opportunities.

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Bogdan Rancea

Bogdan er et grundlæggende medlem af Inspired Mag og har akkumuleret næsten 6 års erfaring i denne periode. På fritiden kan han lide at studere klassisk musik og udforske billedkunst. Han er også ganske besat af fixies. Han ejer allerede 5.

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