34 lines
648 B
JavaScript
34 lines
648 B
JavaScript
/**
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* Returns random key from the object.
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*
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* @param {object} obj
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* @returns {string}
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*/
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function getRandomKey(obj) {
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let keys = Object.keys(obj);
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return keys[ keys.length * Math.random() << 0 ];
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};
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/**
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* Randomly sorts an array.
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*
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* @param {array} array
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* @returns {array}
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*/
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function shuffleArray(array) {
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return array.sort(function(a, b) {
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return getRandomInt(1) ? 1 : -1;
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});
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}
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/**
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* Returns random number from 0 to max.
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*
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* @param {number} max
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* @returns {number}
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*/
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function getRandomInt(max) {
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return Math.floor(Math.random() * Math.floor(max + 1));
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}
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