Link
Embed
Share
Beginning
This slide
Copy link URL
Copy link URL
Copy iframe embed code
Copy iframe embed code
Copy javascript embed code
Copy javascript embed code
Share
Tweet
Share
Tweet
Slide 1
Slide 1 text
REACT INLINE STYLES and the FUTURE OF CSS
Slide 2
Slide 2 text
Hey! @alexlande
Slide 3
Slide 3 text
Seattle “Kerry Park, Start of Spring 1” by C.M. Keiner is licensed under CC BY 2.0
Slide 4
Slide 4 text
Seattle “Seattle Thunderstorm 1” by C.M. Keiner is licensed under CC BY 2.0
Slide 5
Slide 5 text
No content
Slide 6
Slide 6 text
REACT INLINE STYLES and the FUTURE OF CSS
Slide 7
Slide 7 text
NO FUTURE
Slide 8
Slide 8 text
I’m an architect, honest!
Slide 9
Slide 9 text
You keep using that word…
Slide 10
Slide 10 text
No content
Slide 11
Slide 11 text
Not everybody cares about CSS
Slide 12
Slide 12 text
you don’t have to care Good architecture means
Slide 13
Slide 13 text
STYLE GUIDE
Slide 14
Slide 14 text
NAMING CONVENTIONS .Sidebar {} .Sidebar.isExpanded {} .Sidebar__section {} .Btn {} .Btn--primary {} .Btn--round {}
Slide 15
Slide 15 text
AUTHORING GUIDELINES
Slide 16
Slide 16 text
CODE REVIEW
Slide 17
Slide 17 text
EVERYTHING WAS PERFECT!
Slide 18
Slide 18 text
EVERYTHING WAS TERRIBLE!
Slide 19
Slide 19 text
SPECIFICITY HELL
Slide 20
Slide 20 text
SPECIFICITY HELL
Slide 21
Slide 21 text
SPECIFICITY HELL
Slide 22
Slide 22 text
SPECIFICITY HELL
Slide 23
Slide 23 text
“Not bad” is not great.
Slide 24
Slide 24 text
No content
Slide 25
Slide 25 text
CoolCorp MENU a { color: orange; }
Slide 26
Slide 26 text
CoolCorp MENU .header a { color: white; }
Slide 27
Slide 27 text
CoolCorp MENU SOME OPTIONS Pages
Slide 28
Slide 28 text
CoolCorp MENU SOME OPTIONS Pages
Slide 29
Slide 29 text
CoolCorp MENU SOME OPTIONS Pages .flyout a { color: orange; }
Slide 30
Slide 30 text
CoolCorp MENU SOME OPTIONS Pages LOG IN .button { color: white; }
Slide 31
Slide 31 text
CoolCorp MENU SOME OPTIONS Pages LOG IN
Slide 32
Slide 32 text
CoolCorp MENU SOME OPTIONS Pages LOG IN .flyout .button { color: white; }
Slide 33
Slide 33 text
CoolCorp MENU SOME OPTIONS Pages LOG IN .button { color: white !important; }
Slide 34
Slide 34 text
CoolCorp MENU SOME OPTIONS Pages LOG IN .header .flyout .button { color: white; }
Slide 35
Slide 35 text
CoolCorp MENU BUTTON BUTTON BUTTON BUTTON BUTTON BUTTON BUTTON BUTTON BUTTON BUTTON BUTTON BUTTON
Slide 36
Slide 36 text
SOURCE ORDER WOES
Slide 37
Slide 37 text
CoolCorp MENU SOME OPTIONS Pages .header a { color: white; } .flyout a { color: orange; } LOG IN
Slide 38
Slide 38 text
CoolCorp MENU SOME OPTIONS Pages .flyout a { color: orange; } .header a { color: white; } LOG IN
Slide 39
Slide 39 text
NAMING COLLISIONS
Slide 40
Slide 40 text
It’s all globular
Slide 41
Slide 41 text
Just give me my fix!
Slide 42
Slide 42 text
.product-page .sidebar .btn {…}
Slide 43
Slide 43 text
DEAD CODE
Slide 44
Slide 44 text
DEAD CODE FOREVER
Slide 45
Slide 45 text
IMPOSSIBLE TO CHANGE
Slide 46
Slide 46 text
Let’s have a show of hands
Slide 47
Slide 47 text
✴ Specificity ✴ Source Order ✴ Naming ✴ Dead Code ✴ Modification
Slide 48
Slide 48 text
BEM SMACSS OOCSS UNCSS IMMUTABLE STYLES ???
Slide 49
Slide 49 text
A challenger appears…
Slide 50
Slide 50 text
REACT
Slide 51
Slide 51 text
aficionado: one with afición
Slide 52
Slide 52 text
Components all the way down
Slide 53
Slide 53 text
Click me!
Slide 54
Slide 54 text
Click me!
Slide 55
Slide 55 text
Hey!
Content!
Slide 56
Slide 56 text
Content!
Slide 57
Slide 57 text
A BETTER TOMORROW
Slide 58
Slide 58 text
AN INTERESTING STORY
Slide 59
Slide 59 text
Christopher “vjeux” Chedeau React: CSS in JS
Slide 60
Slide 60 text
Plan • Problems with CSS at scale 1. Global Namespace 2. Dependencies 3. Dead Code Elimination 4. Minification 5. Sharing Constants 6. Non-deterministic Resolution 7. Isolation
Slide 61
Slide 61 text
✴ Specificity ✴ Source Order ✴ Naming ✴ Dead Code ✴ Modification 1. Global Namespace 2. Dependencies 3. Dead Code Elimination 4. Minification 5. Sharing Constants 6. Non-deterministic Resolution 7. Isolation
Slide 62
Slide 62 text
JS Everything!
Slide 63
Slide 63 text
COLIN HAS A QUESTION @colinmegill
Slide 64
Slide 64 text
Have you seen this talk? It’s pretty cool! I don’t know how practical it is. So, what’s missing?
Slide 65
Slide 65 text
WE CALLED IT RADIUM
Slide 66
Slide 66 text
So how does it work, then?
Slide 67
Slide 67 text
JSX
Slide 68
Slide 68 text
var styles = { color: "#333" }
Slide 69
Slide 69 text
No Selectors, No Semicolons, No Mercy
Slide 70
Slide 70 text
REGISTER styles = { background: "green", padding: "1rem" }
Slide 71
Slide 71 text
REGISTER Register
Slide 72
Slide 72 text
VARIABLES
Slide 73
Slide 73 text
NO SPECIFICITY
Slide 74
Slide 74 text
SOURCE ORDER INDEPENDENCE
Slide 75
Slide 75 text
ONE LESS HARD PROBLEM NAMING
Slide 76
Slide 76 text
DEAD CODE ELIMINATION
Slide 77
Slide 77 text
MODIFY AND MAINTAIN
Slide 78
Slide 78 text
✴ Specificity ✴ Source Order ✴ Naming ✴ Dead Code ✴ Modification
Slide 79
Slide 79 text
OK
Slide 80
Slide 80 text
Back to Radium
Slide 81
Slide 81 text
styles = { color: "green", ":hover": { color: "blue" } } BROWSER STATES
Slide 82
Slide 82 text
BROWSER STATES onMouseEnter() { this.setState({ hover: true }); }
Slide 83
Slide 83 text
MEDIA QUERIES styles = { width: 50%, "@media (min-width: 600px)": { width: 75% } }
Slide 84
Slide 84 text
MEDIA QUERIES var mql = window.matchMedia( "min-width: 600px" ); mql.addListener(updateMediaState);
Slide 85
Slide 85 text
style={[ styles.base, styles[this.props.kind], this.props.block && styles.block ]} STYLE ARRAYS
Slide 86
Slide 86 text
class="btn btn-primary btn-block" STYLE ARRAYS
Slide 87
Slide 87 text
Let’s make a button
Slide 88
Slide 88 text
BUTTON TIME styles = { background: "green", display: "block", padding: "1rem" }
Slide 89
Slide 89 text
BUTTON TIME ":hover": { background: "blue" }
Slide 90
Slide 90 text
BUTTON TIME "@media (min-width: 400px)": { display: "inline-block" }
Slide 91
Slide 91 text
BUTTON TIME style={[ styles.base, styles[this.props.kind], this.props.block && styles.block ]}
Slide 92
Slide 92 text
BUTTON TIME
Slide 93
Slide 93 text
BUTTON TIME
Slide 94
Slide 94 text
BUTTON TIME
Slide 95
Slide 95 text
So, what’s the problem?
Slide 96
Slide 96 text
Well…
Slide 97
Slide 97 text
FAKING IT
Slide 98
Slide 98 text
Enhance
Slide 99
Slide 99 text
Don’t panic
Slide 100
Slide 100 text
REACT ONLY
Slide 101
Slide 101 text
Virtual— what now?
Slide 102
Slide 102 text
DIFFING
Slide 103
Slide 103 text
DIFFING
flyout-active
One
Two
Three
Three
Slide 104
Slide 104 text
DIFFING
color: white; color: black;
Slide 105
Slide 105 text
Still…
Slide 106
Slide 106 text
NO FUTURE
Slide 107
Slide 107 text
STRANGE EXPERIMENTS IN USERLAND!
Slide 108
Slide 108 text
CSS MODULES
Slide 109
Slide 109 text
// blog-post.css .title { font-size: 2rem; } // blog-post.js var styles = require("./blog-post.css");
// Rendered HTML
Slide 110
Slide 110 text
✴ Specificity ✴ Source Order ✴ Naming ✴ Dead Code ✴ Modification
Slide 111
Slide 111 text
CSS MODULE COMPOSITION
Slide 112
Slide 112 text
// blog-post.css .normal { font-size: 2rem; } .highlight { composes: normal; color: orange; } // blog-post.js var styles = require("./blog-post.css");
// Rendered HTML
Slide 113
Slide 113 text
@EXTEND WOES
Slide 114
Slide 114 text
.btn, .btn-primary, .btn-secondary, .btn-tertiary, .btn-inverse, .sidebar-btn, .sidebar-btn-primary, .sidebar-btn-secondary, .sidebar-btn-tertiary, .sidebar-btn-inverse { color: #333; }
Slide 115
Slide 115 text
.btn { color: #333; } .btn-primary { /* other styles */ } .sidebar-btn { /* other styles */ }
Slide 116
Slide 116 text
No content
Slide 117
Slide 117 text
TOOLS, NOT RULES - SOMEONE “
Slide 118
Slide 118 text
BETTER UX BETTER DX =
Slide 119
Slide 119 text
I PLEDGE ALLEGIANCE TO THE SPEC
Slide 120
Slide 120 text
WEB COMPONENTS
Slide 121
Slide 121 text
button { background: blue; font-family: Chaparral; } Normal DOM Normal DOM
Slide 122
Slide 122 text
button { background: orange; font-family: Verlag; } Shadow DOM! Normal DOM SHADOW DOM!
Slide 123
Slide 123 text
@philwalton GO SEE PHIL
Slide 124
Slide 124 text
RUNTIME VARIABLES
Slide 125
Slide 125 text
CUSTOM PROPERTIES :root { --bg-color: green; } .btn{ background-color: var(--bg-color); }
Slide 126
Slide 126 text
@custom-media --medium (min-width: 30em); @media(--medium) { width: 50%; } CUSTOM MEDIA QUERIES
Slide 127
Slide 127 text
@custom-selector :--button button, .btn; :--button:hover { background-color: var(--hover-color); } CUSTOM SELECTORS
Slide 128
Slide 128 text
CSS EXTEND
Slide 129
Slide 129 text
.btn { padding: 1rem; } .btn-primary { @extend .btn; background-color: orange; }
Slide 130
Slide 130 text
.modal { /* modal styles */ } .panel { /* panel styles */ } @media (max-width: 599px) { .options { @extend .panel; } } @media (min-width: 600px) { .options { @extend .modal; } }
Slide 131
Slide 131 text
FINE “ - SOMEONE CSS IS
Slide 132
Slide 132 text
YOU JUST HAVE TO…
Slide 133
Slide 133 text
LET’S MAKE CSS EASY
Slide 134
Slide 134 text
@alexlande Thanks!