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easifyjs

EasifyJS

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A small library that makes JavaScript easier to work with.

Contribute

For more information on how to contribute, view CONTRIBUTE.md or click here.

If you want a list of contributors in order of thier contribution, view CONTRIBUTORS.md or click here.

Check out the style guide.

Installation

To get started, include easify.min.js in your website. Make sure it's included above your websites JS file. To make sure JS doesn't interfere with the loading of your HTML and CSS, it is suggested that you add your JS files right above your closing body tag.

Normal download usage

    <script src="js/easify.min.js"></script> 
    <script src="js/app.js"></script> 
  </body>
</html>

Node usage

In the terminal, run npm install easifyjs

    <script src="node_modules/easifyjs/easify.min.js"></script> 
    <script src="js/app.js"></script> 
  </body>
</html>

Easify is also accessible to your back-end JS by referring to the global scope:

var e = global.Easify();

You'll know it's included if you look in the console and see:

Easify loaded!

Documentation

Once included/installed, you will need to initialize an Easify object. There are 2 ways to do this:

// The long hand version 
var e = Easify();
 
// The preferred method 
var e = $E();
 
// Will be using the 'e' variable for the rest of this section 

Now you can access all of the Easify methods by using dot notation.

Note: If you want to play around with Easify, visit easifyjs.com and open the console. There you can use the already setup e variable to run any of the Easify methods.

For example, find out if a number is odd or not:

// This checks to see if a number is odd 
e.odd(5); // > true 
e.odd(4); // > false 
 
 
// The above code is simplifying something similar to this: 
function odd(num) {
  if (num % 2 !== 0) {
    return true;
  } else {
    return false;
  }
}
 
odd(5); // > true 
odd(4); // > false 
 
 
// Which would you rather have in your code? 

String Methods

cap

Used to capitalize the first letter of a provided string.

e.cap('john'); // > "John" 

downcase

Converts all letters in a string to lowercase.

e.downcase('HELLO WORLD'); // > "hello world" 

string

Used to check if the provided value is of type 'string'.

e.string('hello world'); // > true 
e.string(33); // > false 

last

Used to get the last letter of a string.

e.last('hello world'); // > "d" 

password

Used to get a random assortment of letters, numbers and special characters for use as a password or anything else

// Takes 1 argument for the length of the string 
e.password(10); // > "5r92x*%9@w" 
 
// When no length is passed in, it defaults to 12 
e.password(); // > "9#r10c10g$4d&!" 
 

remove

Used to remove a specified amount of random letters from a provided string.

e.remove('hello world', 4); // > "hell od" 
e.remove('hello world', 4); // > "heloorl" 

removeAll

Used to remove all instances of a specified letter from a provided string.

e.removeAll('hello world', 'l'); // > "heo word" 

randomize

Used to randomly sort the letters in a provided string.

e.randomize('hello world'); // > "lrdlwloeho " 
e.randomize('hello world'); // > "roheodlw ll" 

randomcase

Used to randomlly make letters uppercase or lowercase.

e.randomcase('hello world'); // > "HeLLo WOrld" 
e.randomcase('hello world'); // > "hELLo WorlD" 

repeat

Used to repeate a provided string, a specified amount of times. Also trims off white space from the beginning and end.

e.repeat('John ', 3); // > "John John John"; 

reverse

Used to reverse the order of a string.

e.reverse('hello world'); // > "dlrow olleh" 

trim

Removes any white space from the beginning and end of a string

e.trim(' hello world '); // > "hello world" 

upcase

Converts all letters in a string to uppercase.

e.upcase('hello world'); // > "HELLO WORLD" 

format

Evaluates a string literal containing one or more placeholders, returning a result in which the placeholders are replaced with their corresponding values.

e.format('Good {time}, how are {who}?', { time: 'afternoon', who: 'you' });
// > "Good afternoon, how are you?" 

Only in development version

wrap

Used to wrap a provided string inside of a provided HTML element.

e.wrap('hello world', 'h1'); // > "<h1>hello world</h1>" 

Array Methods

bridge

Combines 2 arrays and returns 1 array of all values

e.bridge([1,2,3], [4,5,6]); // > [1, 2, 3, 4, 5, 6] 

unify

Combines 2 arrays keeping only unique values

e.unify([1, 2, 3], [2, 3, 4, 5]); // > [1, 2, 3, 4, 5] 

checkTypes

Used to check the types of all values contained in a passed in array

e.checkTypes([{}, [], 'hello', 3, function(){}, true]); // > ["object", "array", "string", "number", "function", "boolean"] 

has

Used to check if a specific value is inside of an array

e.has([1,2,3], 4); // > false 
e.has([1,2,3], 2); // > true 

array

Used to check if passed in value is an array

e.array([]); // > true 
e.array({}); // > false 
e.array('hello'); // > false 

parlay

Creates a new array out of specified indexes from the provided array

e.parlay(['a','b','c','d','e'], [0,3,4]); // > ["a", "d", "e"] 

removeItem

Returns a new array without the specified index of the input array

e.removeItem(['a', 'b', 'c'], 1); // > ["a", "c"] 

search

Takes an array and returns a new array of strings with character sequences that match the provided string.

var food = ['ham', 'potatos', 'spam', 'jam', 'chicken'];
e.search(food, 'am'); // > ['ham', 'spam', 'jam'] 

shuffle

Returnes a new array with the input array's values shuffled

e.shuffle([1,2,3,4,5]); // > [2, 4, 1, 5, 3] 

Object Methods

clear

Takes in an object and clears all the contents.

var person = {name: 'John', age: 21};
e.clear(person);
person; // > {} 

combine

Takes 2 object arguments or a single argument which is an array of objects.

Returns a new object which has all keys from input objects. If values conflict, the value from the right most object will take precedence

var person = {name: 'John', age: 21};
var dog = {fur: 'black', eyes: 'brown'};
var cat = {fur: 'white', legs: 4};
 
// With 2 objects 
e.combine(dog, cat); // > {fur: "white", eyes: "brown", legs: 4} 
// With array of objects 
e.combine([person, cat, dog]); // > {name: "John", age: 21, fur: "black", eyes: "brown", legs: 4} 

drop

Removes the specified methods/properties from the input object

var person = {name: 'John', age: 21, title: 'Mr.'};
 
e.drop(person, ["title", "age"]);
 
console.log(person); // > {name: "John"} 

isObject

Used to check if passed in value is an object

e.isObject({}); // > true 
e.isObject([]); // > false 
e.isObject(4); // > false 
e.isObject(null); // > false 

keys

Returns an array containing the keys of the provided object

var obj = {name: 'John Smith', age: 21};
e.keys(obj); // > ["name", "age"]

maintain

Returns a new object with only the specified keys

var person = {name: 'John', age: 21, title: 'Mr.'};
 
e.maintain(person, ['name', 'age']); // > {name: "John", age: 21} 

objectPush

Adds a property and a value to an object

var person = {name: 'John', age: 21};
 
e.objectPush(person, 'title', 'Mr.'); // > {name: "John", age: 21, title: "Mr."} 

proto

Returns the prototype of the provided object

function Hello(){};
Hello.prototype = {greet: 'Hello world'};
= new Hello();
e.proto(h); // > {greet: "Hello world"} 

rename

Changes the name of the specified property name of an object

var person = {firstname: 'John'};
e.rename(person, 'firstname', 'name'); // > {name: "John"} 

clone

Clones an object and its properties/attributes

var person = {firstname: 'John'};
var person2 = e.clone(person); // > { firstname: "John" } 

size

Returns the amount of keys in the provided object

var obj = {car1: 'Mustang', car2: 'Impala', car3: 'Pento'};
e.size(obj); //> 3 

toArray

Converts an object into an array of arrays containing the key and value

var person = {firstname: 'John', lastname: 'Doe'};
e.toArray(person); // > [["firstname", "John"], ["lastname", "Doe"]] 

values

Returns an array of the values from the provided object

var person = {firstname: 'John', lastname: 'Doe'};
e.values(person) // > ["John", "Doe"] 

DOM Methods

insertHTML

Used to insert text or HTML into a selected element. Can be used with id or class selectors. If class is selected, a 4th(optional) parameter can be used to specify how many will be affected, starting from the first.

// This will place 'hello world' inside of the element with an id of #id-name 
e.insertHTML('id', 'id-name', 'hello world');
 
// This will place 'hello world' inside of all elements with the class of .class-name 
e.insertHTML('class', 'class-name', 'hello world');
 
// This will place 'hello world' inside of 2 elements with the class of .class-name 
e.insertHTML('class', 'class-name', 'hello world', 2);
 
// Note: If the amount argument is more than the amount of elements with 
// the specified classname, the amount argument will default to actual 
// amount of elements. 

elementFromId

Returns the DOM element with the given ID.

// Will return the element with the #heading ID. If it doesn't exist, it will return null. 
e.elementFromId('heading');

elementsFromClass

Returns an array of DOM elements with the given class

// Will return an array of elements with the class of .item. 
e.elementsFromClass('item');

elementsFromTag

Returns an array of DOM elements of the provided tag name

// Will return an array of all divs on the page 
e.elementsFromTag('div');

elementsFromName

Returns an array of DOM elements with the provided name

// Will return an array of elements with the name "city" 
e.elementsFromName('city');

Universal Methods

compare

Returns true if 2 arrays or objects are the same

var arr1 = [1,2,3];
var arr2 = [1,2,3];
e.compare(arr1, arr2); // > true 
 
var arr1 = [1,2,3];
var arr2 = [1,2,3,4];
e.compare(arr1, arr2); // > false 
 
var obj1 = {name: 'John', age: 21};
var obj2 = {name: 'John', age: 21};
e.compare(obj1, obj2); // > true 
 
var obj1 = {name: 'John', age: 21};
var obj2 = {name: 'Jane', age: 28};
e.compare(obj1, obj2); // > false 

equal

Returns true if both arguments are equal (strict).

e.equal(5, 5); // > true 
e.equal(5, '5'); // > false 
e.equal('hello', 'hello'); // > true 

notEqual

Returns true if both arguments are not equal (strict).

e.notEqual(5, 5); // > false 
e.notEqual(5, '5'); // > true 
e.notEqual('hello', 'Hello'); // true 

similar

Returns true if both arguments are equal (not strict).

e.similar(5, 5); // > true 
e.similar(5, '5'); // > true 
e.similar('hello', 'Hello'); // > false 

notSimilar

Returns true if both arguments are not equal (not strict).

e.notSimilar(5, 5); // > false 
e.notSimilar(5, '5') // > false 
e.notSimilar('hello', 'Hello'); // > true 

truthy

Returns true if input is truthy value.

// Numbers 
e.truthy(0); // > false 
e.truthy(1); // > true 
 
// Strings 
e.truthy(''); // > false 
e.truthy('hello'); // > true 
 
// Arrays 
e.truthy([]); // > true 
e.truthy([1, 2, 3]); // > true 
 
// Objects 
e.truthy({}); // > true 
e.truthy({a: 1, b: 2, c: 3}); // > true 
 
// Functions 
e.truthy(function(){}); // > true 

falsey

Returns true if input is falsey value.

// Numbers 
e.falsey(0); // > true 
e.falsey(1); // > false 
 
// Strings 
e.falsey(''); // > true 
e.falsey('hello'); // > false 
 
// Arrays 
e.falsey([]); // > false 
e.falsey([1, 2, 3]); // > false 
 
// Objects 
e.falsey({}); // > false 
e.falsey({a: 1, b: 2, c: 3}); // > false 
 
// Functions 
e.falsey(function(){}); // > false 

ifTrue

Runs a provided function if the comparison returns true.

e.ifTrue(1 < 2, function(){return '1 is less than 2'});
// > "1 is less than 2" 

ifFalse

Runs a provided function if the comparison returns false.

e.ifFalse(1 > 2, function(){return '1 is actually less than 2'});
// > "1 is actually less than 2" 

type

Returns the type of a passed in value.

e.type([]); // > "array" 
e.type({}); // > "object" 
e.type('hello'); // > "string" 
e.type(3); // > "number" 
e.type(true); // > "boolean" 

methods

Returns an array of the Easify methods.

e.methods(); // > ["capitalize", "isString", ... , "methodCount", "last"]; 

methodCount

Returns the amount of methods on EasifyJS.

e.methodCount(); // > 41 

Number Methods

add

Performs addition on 2 or more numbers.

// Add just 2 numbers 
e.add(5, 5); // > 10 
 
// Add an array of numbers 
e.add([5, 5, 5]); // > 15 

subtract

Performs subtraction on 2 or more numbers.

// Subtract using 2 numbers 
e.subtract(5, 3); // > 2 
 
// Subtract using an array of numbers 
e.subtract([10, 4, 1]); // > 5 

multiply

Multiplies 2 or more numbers together.

// Multiplies 2 numbers 
e.multiply(5, 5); // > 25 
 
// Multipllies an array of numbers 
e.multiply([5, 2, 2]); > 20

divide

Performs division with 2 or more numbers.

// Divides using 2 numbers 
e.divide(6, 3); // > 2 
 
// Divides using an array of numbers. 
e.divide([20, 2, 5]); // > 2 

number

Checks if provided argument is of type "number".

e.number(5); // > true 
e.number('5'); // > false 
e.number(true); // > false 

odd

Checks if number is odd.

e.odd(5); // > true 
e.odd(4); // > false 

even

Checks if number is even.

e.even(5); // > false 
e.even(4); // > true 

PI

Returns the value of PI.

e.PI(); // > 3.141592653589793 

random

Returns a random whole number from 1 to the specified number.

e.random(5); // > 4 
e.random(5); // > 1 
e.random(5); // > 2 
 
// If argument is 0, return value will be 1 
e.random(0); // > 1 

between

Returns a random whole number between and including the 2 arguments.

e.between(5, 10); // > 7 
 
// The order of the numbers doesn't matter 
e.between(10, 5); // > 6 
 
// 2 of the same decimal number will round down to it's whole number 
e.between(5.5, 5.5); // > 5 

Tests

Before submitting a pull request, make sure you run the the tests to make sure nothing broke.

First make sure the dependencies are installed with:

npm install

Once the dependencies are installed, run the following:

npm test

Yep, that's it. Simple right?

To add a new test, open test/test.js. Easify uses Chai's assert library inside of Mocha. Check out the Chai documentation to learn more about using the assert library. Also check out the Mocha website to learn about how our test.js file is formatted.

Note: Below is the old way to run tests (DEPRICATED)

Navigate to the tests directory and open index.html in your default web browser, then click the "Run Tests" button. You'll see a long list of the tests that were run and whether they passed or failed.

To make sure all the tests were run, look in the console and you'll see something similar to the following:

Tests run!
62 passed - 0 failed

Numbers will be different as more tests are added.

Tests are very simple to implement. Here's the format:

// This is where you put your description of the test and any 
// amplifying information. 
tests.push(
  function() {
    var text = "Short description that will appear when testing";
    runTest(comparison, text);
  }
);

Here is an example of a real world test:

// Checks if cap() returns a string with the first letter capitalized 
  tests.push(
    function() {
      var text = "cap() returns a new string with the first letter capitalized";
      runTest(e.cap('testing') === 'Testing', text);
    }
  );