JS achieve hexadecimal and RGB conversion

As the terms of front-end development, will inevitably encounter color values, strings, and direct digital conversion, blogger wrote a small tool for this purpose, for online conversion between color values.

Pre-knowledge:  parseInt ,  toString

parseInt (value, decidal) value is transmitted as hexadecimal values ​​decidal

 

parseInt(110, 2)  =>  6

parseInt(110, 8)  =>  72

parseInt(110, 10)  =>  110

parseInt(110, 16)  =>  272

 

toString need to first convert the digital conversion by the conversion to the specific band by toString

 

 parseInt(110, 16).toString(8)  =>  '420'

 parseInt(110, 16).toString(16) => '110'

 parseInt(110, 10).toString(16) => '6e' 

When the number is hexadecimal 10 is written 110..toString (16) => '6e' 110 Note that there are two points behind, when a decimal point would think

 

RGB to hex

rgb(255,123,20) => #ff7b14

Idea: Create an array list list [0] = '#'

list[1] = parseInt(255, 10).toString(16)

list[2] = parseInt(123, 10).toString(16)

list[3] = parseInt(20, 10).toString(16)

Results: list.join ( '' )

 

Hex to RGB

 

Ideas:

ff7b14

Partitioning the array into a list = [ 'ff', '7b', '14']

list[0] = parseInt(list[0] , 16)

list[1] = parseInt(list[1] , 16)

list[2] = parseInt(list[2] , 16)

 

Results: list.join ( ',')

 

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