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JavaScript

Posted by msdsmd sm,dfsadf
msdsmd sm,dfsadf
1,124 Points

Please,someone, explain this very short line of code

<input aria-checked="false">
<script>
const input = document.querySelector('input')
let isChecked = JSON.parse(setAttribute('aria-checked',!isChecked))
.....
..............
..
//Please explain what JSON.parse does
</script>

2 Answers

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

JSON parse is a method used to format the JSON information retrieved into something that JavaScript can recognise. :-)

msdsmd sm,dfsadf
msdsmd sm,dfsadf
1,124 Points
msdsmd sm,dfsadf
msdsmd sm,dfsadf
1,124 Points

Please help me. I wan to scroll to blueDiv without using scrollTo because I do not think it will look good on mobile. Is there a better way to scroll to blueDiv when I clicked the button.

 <!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
<style>
*{margin:0;}
html{scroll-benhavior:smooth;}
</style>
</head>
<body>
<div class="blackDiv" style="height:100vh;width:100vw;position:relative;background:#000;">
<button style="position:absolute;bottom:0;width:100%;padding:15px 16px;">Click me to Scroll to blue div</button>
</div>
 <div class="blueDiv" style="height:100vh;width:100vw;background:#0a67ba;"></div>

 <div class="whiteDiv" style="height:100vh;background:transparent;"></div>
<script>

let button = document.querySelector('button')
let blueDiv = document.querySelector('.blueDiv')
window.addEventListener('click',function(e){
if(e.target.tagName === 'BUTTON' ){
window.scrollTo(0, 1290)
}
})
</script>
</body>
</html>