Issue #367 (ES String Methods, Frameworks, Testing, Uncats)07/30/20
In case you missed it, a couple of new String methods have been added in ES2017 and ES2019 and they all have pretty decent browser support.
The best way to describe them, of course, is by some code examples:
let myStringPS = 'apples',
myStringPE = 'oranges',
myStringTS = ' peaches ',
myStringTE = ' watermelons ';
myStringPS = myStringPS.padStart(15, 'Z');
myStringPE = myStringPE.padEnd(15, 'Z');
myStringTS = myStringTS.trimStart();
myStringTE = myStringTE.trimEnd();
console.log(myStringPS); // "ZZZZZZZZZapples"
console.log(myStringPE); // "orangesZZZZZZZZ"
console.log(myStringTS); // "peaches "
console.log(myStringTE); // " watermelons"
The most straightforward of these are the trimStart() and trimEnd() methods. Those do exactly what they imply: they remove any spaces from the start or end of a given string.
The other two methods, padStart() and padEnd() are not quite as clear. At first glance, you might think the passed in integer value (first argument) will add that number of the character used for the second argument. But that's not the case. The integer represents the desired total number of characters in the string after it is 'padded'. This means if your string is already higher than the number specified, then it won't add anything. Also, if you omit the second value, the pad methods will use a space character as the default:
let myStringPS2 = 'guacamole',
myStringPE2 = 'garbanzo';
myStringPS2 = myStringPS2.padStart(6, 'Z');
myStringPE2 = myStringPE2.padEnd(15);
console.log(myStringPS2); // Nothing added
console.log(myStringPE2); // "garbanzo "
As you can see, the first example wants to make the string 6 characters long. But it's already longer than that, so there are no characters added so it stays the same. The second example uses the space character to 'pad' the string up to a length of 15 (thus adding 7 spaces to the 8 existing characters).
You can try out all the examples in this CodePen.
The only major flaw in browser support is the fact that Edge uses nonstandard trimLeft() and trimRight() (instead of start/end), but that should be simple enough to patch up if you care about Edge support.
Now on to this week's tools!
Full Stack Starter Kit
A GraphQL-first full-stack starter kit built with Node, React, and powered by TypeScript.
An open source design system with dozens of components and layouts to choose from, built teams to build consistent UIs.
Wiki software with an intuitive interface, for building documentation pages.
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Material Kit React
React UI kit based on the popular Material UI project.
Windows 95 UI Kit
30+ responsive components for building interfaces with a old Windows OS look.
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The official Create React App template of React Boilerplate.
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Testing and Debugging Tools
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Chrome extension that detects JSON responses in Chrome and converts them to a beautiful, lightweight interface.
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Enter a URL and this tool will tell you where the page is hosted.
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