String Magic

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#javascript #promises #howto

How to Get the Domain From A URL Using Javascript 
var url = "http://scratch99.com/web-development/javascript/";
var urlParts = url.replace('http://','').replace('https://','').split(/[/?#]/);
var domain = urlParts[0];
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#dart #flutter

Capitalize the first letter of a String 
String capitalize(String s) {
  if (s == null || s.isEmpty) {
    return s;
  }
  return s.length < 1 ? s.toUpperCase() : s[0].toUpperCase() + s.substring(1);
}
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#python

Check String contains Substring Method 
if "blah" not in somestring: 
    continue

Similiar Collections

String Magic

 @frogblog #javascript
How to Get the Domain From A URL Using Javascript Capitalize the first letter of a String Check String contains Substring Method

Things you can do with Arrays

 @mishka #javascript
Get average value of items in a javascript array How to Access Clicked Element From an Array With the Same Class Function to find the minimum value in Javascript Arrays Function to find maximum value in javascript array Get sum of all values in javascript array mongodb - How to find items using regex in Mongoose for partial text search

Time and Dates

 @new_roman11 #javascript
How to Get Current Year in Javascript How to dynamically update your site's copyright year Display Date Objects in Shorter Format - MMM DD YYY HH:MM

JS Methods for Numbers

 @goblindoom95 #javascript
toString() - Convert numbers to string toExponential() - Round off numbers in exponential notation toFixed() Method - convert number to string with fixed number of decimal places The valueOf() Method - Returns number of mathematical expression or number variable parseInt() Method - returns a whole number from a string

Dealing with JSON

 @mishka #javascript
Creating a JSON Object in Javascript JSON.stringify() - convert objects into JSON JSON.parse() - convert string into a JavaScript object

Gurukula

 @noobj #javascript
eventloop_async_blocking.js eventloop_unblocking_event_loop.js macro_and_micro_tasks.js macro_and_micro_tasks.js racer.js process.tick over setImmediate process.tick starving others Good fellow setImmediate setTimeout issue setTimeout issue Non Pure function Pure function mutating function side affects non mutating function, no side affects Immutable examples Immutable examples Immutable examples Higher order functions Higher order functions Higher order functions Higher order functions Higher order functions Test pure functions composition example Pure function Non Pure function composition example Event Loop