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Autoscoping (#103)

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* Add autoscoping with generated demo

* Remove manual demo from all snippets

* Add JavaScript inside IIFE

* Align mouse-cursor-gradient-tracking.md to demo code

* Match snippets to demo

* Update CONTRIBUTING.md

* Create reusable function for code extraction
This commit is contained in:
atomiks
2018-10-05 09:18:51 +10:00
committed by GitHub
parent 2afb2fe88a
commit 11eff23e47
41 changed files with 107 additions and 1102 deletions
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67
snippets/mouse-cursor-gradient-tracking.md
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@ -54,8 +54,8 @@ A hover effect where the gradient follows the mouse cursor.
```js
var btn = document.querySelector('.mouse-cursor-gradient-tracking')
btn.onmousemove = function(e) {
var x = e.pageX - btn.offsetLeft
var y = e.pageY - btn.offsetTop
var x = e.pageX - btn.offsetLeft - btn.offsetParent.offsetLeft
var y = e.pageY - btn.offsetTop - btn.offsetParent.offsetTop
btn.style.setProperty('--x', x + 'px')
btn.style.setProperty('--y', y + 'px')
}
@ -63,73 +63,10 @@ btn.onmousemove = function(e) {
#### Demo
<div class="snippet-demo">
<button class="snippet-demo__mouse-cursor-gradient-tracking">
<span>Hover me</span>
</button>
</div>
<style>
.snippet-demo__mouse-cursor-gradient-tracking {
position: relative;
background: #7983ff;
padding: 0.5rem 1rem;
font-size: 1.2rem;
border: none;
color: white;
cursor: pointer;
outline: none;
overflow: hidden;
}
.snippet-demo__mouse-cursor-gradient-tracking span {
position: relative;
}
.snippet-demo__mouse-cursor-gradient-tracking::before {
--size: 0;
content: '';
position: absolute;
left: var(--x);
top: var(--y);
width: var(--size);
height: var(--size);
background: radial-gradient(circle closest-side, aqua, rgba(0,255,255,0.0001));
transform: translate(-50%, -50%);
transition: width .2s ease, height .2s ease;
}
.snippet-demo__mouse-cursor-gradient-tracking:hover::before {
--size: 200px;
}
</style>
<script>
;(function () {
var btn = document.querySelector('.snippet-demo__mouse-cursor-gradient-tracking')
btn.onmousemove = function (e) {
var x = e.pageX - btn.offsetLeft - btn.offsetParent.offsetLeft
var y = e.pageY - btn.offsetTop - btn.offsetParent.offsetTop
btn.style.setProperty('--x', x + 'px')
btn.style.setProperty('--y', y + 'px')
}
})()
</script>
#### Explanation
_TODO_
**Note!**
If the element's parent has a positioning context (`position: relative`), you will need to subtract
its offsets as well.
```js
var x = e.pageX - btn.offsetLeft - btn.offsetParent.offsetLeft
var y = e.pageY - btn.offsetTop - btn.offsetParent.offsetTop
```
#### Browser support
<div class="snippet__requires-javascript">Requires JavaScript</div>