Ross
42 lines
1.1 KiB
JavaScript
42 lines
1.1 KiB
JavaScript
/**
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* Function to randomise an array order
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* @param {array} array
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*/
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export function shuffleArray(array) {
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var currentIndex = array.length,
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temporaryValue,
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randomIndex;
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// While there remain elements to shuffle...
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while (0 !== currentIndex) {
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// Pick a remaining element...
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randomIndex = Math.floor(Math.random() * currentIndex);
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currentIndex -= 1;
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// And swap it with the current element.
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temporaryValue = array[currentIndex];
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array[currentIndex] = array[randomIndex];
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array[randomIndex] = temporaryValue;
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}
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return array;
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}
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export function urltoFile(url, filename, mimeType) {
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return fetch(url)
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.then(function (res) {
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return res.arrayBuffer();
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})
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.then(function (buf) {
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return new File([buf], filename, { type: mimeType });
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});
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}
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export function formatBytes(bytes, decimals = 2) {
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if (bytes === 0) return "0 Bytes";
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const k = 1024;
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const dm = decimals < 0 ? 0 : decimals;
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const sizes = ["Bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
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const i = Math.floor(Math.log(bytes) / Math.log(k));
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return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + " " + sizes[i];
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} |