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Check if array is empty

Nov 19, 2022CodeCatch
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Canvas File Downloader

Nov 18, 2022AustinLeath

0 likes • 4 views

results =
{
"11345240":"Media Comment-80e47004-1719-493a-af69-a43b2652b41c",
"11345282":"zoom_3_22_21.mp4",
"11345303":"Recording-2.m4a",
"11345348":"February 12%2C 2021.mp4",
"11345826":"Lecture_Rousso_Chapter_06-2.pptx",
"11345933":"Themes_InClassAssigment.pptx",
"11346193":"Agenda – Week of March23.pptx",
"11346318":"MUJS 2370 SP2021 Updated Rhythm Changes Drills Bb - Score.pdf",
"11346319":"MUJS 2370 SP2021 Updated Rhythm Changes Drills C - Score.pdf",
"11346322":"MUJS 2370 SP2021 Updated Rhythm Changes Drills Eb - Score.pdf",
"11346323":"MUJS 2370 Updated Rhythm Changes Drills Bass - Score.pdf",
"11346381":"Anthropology with colored highlighter analysis - Mar 22 2021 - 10-36 AM.pdf",
"11346449":"Anthropology with colored highlighter analysis - Mar 22 2021 - 10-36 AM.pdf",
"11346450":"MUJS 2370 SP2021 Updated Rhythm Changes Drills Bb - Score.pdf",
"11346451":"MUJS 2370 SP2021 Updated Rhythm Changes Drills C - Score.pdf",
"11346453":"MUJS 2370 SP2021 Updated Rhythm Changes Drills Eb - Score.pdf",
"11346454":"MUJS 2370 Updated Rhythm Changes Drills Bass - Score.pdf",
"11346495":"Steinel chromatic ornamentation étude rhythm changes - Aug 23 2020 - 12-19 PM.pdf",
"11346532":"Media Comment-136242b4-7f2c-4d5d-8aa4-091f07e797cf",
"11346581":"2019 Trust Based Relationship Intervention Manual.pdf",
"11346584":"TBRI ppt.pptx",
"11346593":"Trauma informed care.ppt"
}
function NewTab(testing) {
window.open(testing, "_blank");
}
for(test in results) {
var testing = 'https://unt.instructure.com/files/' + test + '/download';
NewTab(testing);
//window.open = 'https://unt.instructure.com/files/' + test + '/download';
}

Extracting components

Nov 19, 2022CodeCatch

0 likes • 2 views

function formatDate(date) {
return date.toLocaleDateString();
}
function Comment(props) {
return (
<div className="Comment">
<div className="UserInfo">
<img
className="Avatar"
src={props.author.avatarUrl}
alt={props.author.name}
/>
<div className="UserInfo-name">
{props.author.name}
</div>
</div>
<div className="Comment-text">{props.text}</div>
<div className="Comment-date">
{formatDate(props.date)}
</div>
</div>
);
}
const comment = {
date: new Date(),
text: 'I hope you enjoy learning React!',
author: {
name: 'Hello Kitty',
avatarUrl: 'https://placekitten.com/g/64/64',
},
};
ReactDOM.render(
<Comment
date={comment.date}
text={comment.text}
author={comment.author}
/>,
document.getElementById('root')
);

getSelectedText

Nov 18, 2022AustinLeath

0 likes • 0 views

// Get the text that the user has selected
const getSelectedText = () => window.getSelection().toString();
getSelectedText();

array shuffle

Nov 19, 2022CodeCatch

0 likes • 0 views

const shuffle = ([...arr]) => {
let m = arr.length;
while (m) {
const i = Math.floor(Math.random() * m--);
[arr[m], arr[i]] = [arr[i], arr[m]];
}
return arr;
};
const foo = [1, 2, 3];
shuffle(foo); // [2, 3, 1], foo = [1, 2, 3]

Global Variables

Oct 29, 2020LeifMessinger

0 likes • 1 view

let variableSet = JSON.parse('["parent","opener","top","length","frames","closed","location","self","window","document","name","customElements","history","locationbar","menubar","personalbar","scrollbars","statusbar","toolbar","status","frameElement","navigator","origin","external","screen","innerWidth","innerHeight","scrollX","pageXOffset","scrollY","pageYOffset","visualViewport","screenX","screenY","outerWidth","outerHeight","devicePixelRatio","clientInformation","screenLeft","screenTop","defaultStatus","defaultstatus","styleMedia","onsearch",&qu...find","webkitRequestAnimationFrame","webkitCancelAnimationFrame","fetch","btoa","atob","setTimeout","clearTimeout","setInterval","clearInterval","createImageBitmap","close","focus","blur","postMessage","onappinstalled","onbeforeinstallprompt","crypto","indexedDB","webkitStorageInfo","sessionStorage","localStorage","chrome","onpointerrawupdate","speechSynthesis","webkitRequestFileSystem","webkitResolveLocalFileSystemURL","openDatabase","variableSet","TEMPORARY","PERSISTENT","addEventListener","removeEventListener","dispatchEvent"]');
let answer = [];
for(let v in this) if(!variableSet.includes(v)) answer.push(v);
console.log(answer);

count substrings

Nov 19, 2022CodeCatch

0 likes • 0 views

const countSubstrings = (str, searchValue) => {
let count = 0,
i = 0;
while (true) {
const r = str.indexOf(searchValue, i);
if (r !== -1) [count, i] = [count + 1, r + 1];
else return count;
}
};
countSubstrings('tiktok tok tok tik tok tik', 'tik'); // 3
countSubstrings('tutut tut tut', 'tut'); // 4