Javascript prototype extensions

Do not open an issue saying that augmenting prototypes is bad. I'm a big boy that can ride my bike without training wheels now and I'm going to go have fun.

If something you read 10 years ago has still got you are scared of augmenting the prototype of the String,Object,Number, and Date objects then do not use this module.

Everything uses Object.defineProperty (introduced in ECMAScript 5) with enumerable:false.

This is NOT a crazy big lib. Seriously- open extensions.js and see for yourself.

npm install extensions

FYI, the module does not exporting anything. It just needs to be require'd somewhere.

//app.js

require("extensions")

If you want to add n number of characters to a string, do this:

//add 3 zeros to the beginning
var x = "EasyPeezy";
console.log(x.padStart(x.length+3, '0'));
//000EasyPeezy

String.prototype.endsWith(string)

String.prototype.startsWith(string)

It does what you think it does.

String.prototype.isLongerThan(length)

String.prototype.isShorterThan(length)

String.prototype.lengthIsBetween(min,max)

Test the length of the String.

String.isEmail(str)

String.prototype.isEmail()

Tests if it matches a big long email RegExp.

String.prototype.remove(string|regex)

This is an alias for:

var x = "The Quick Brown".replace(value, '');

Number

Number.prototype.isBetween(min,max)

min and max are inclusive. Just like if you say "Pick a number between 1 and 100."

Date

Date.midnight([date])

Returns a new Date object that is set to midnight of date. date defaults to new Date() if not passed in.

Date.prototype.midnight()

Returns a new Date object that is set to midnight.

Date.midnightUTC([date])

Date.prototype.midnightUTC()

The usual UTC equivelants.

Date.prototype.addDays(num)

Adds num days to the date.

#Object

Object.enumerate(obj, callback)

Object.prototype.forEach(callback)

Like Array.forEach- but the callback is passed the key & value;

var x = {a:9, b:8, c:7};
x.forEach(function(key, value){
    console.log(key, value);
});
// a	9
// b	8
// c	7

Object.prototype.map(callback)

Works like Array.prototype.map but for objects.

var x = {a:9, b:8, c:7};
var y = x.map(function(key, value){
    return value+1;
});
console.log(y);
// { a: 10, b: 9, c: 8 }

Object.prototype.filter(callback)

Works like Array.prototype.filter but for objects.

var x = {a:9, b:8, c:7};
var y = x.filter(function(key, value){
    return value===8;
});
console.log(y);
// { b: 8 }

(un)license

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to [http://unlicense.org]