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@@ -5,7 +5,7 @@ class JSFun {
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* @param key 关键字
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* @returns 去重后
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*/
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- unique (arr, key) {
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+ unique(arr, key) {
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let res = []
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let obj = {}
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for (let i = 0; i < arr.length; i++) {
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@@ -16,6 +16,40 @@ class JSFun {
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}
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return res
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}
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+
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+ /**
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+ * 同步睡眠
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+ * @param {Number} ms
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+ * @returns
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+ */
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sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms))
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+
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+ /**
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+ * 多维数组转一维
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+ * @param {Array} arr
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+ * @returns
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+ */
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+ flatten(arr) {
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+ return [].concat(
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+ ...arr.map(x => (Array.isArray(x) ? this.flatten(x) : x))
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+ )
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+ }
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+
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+ /**
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+ * 随机数
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+ * @param {minNum} minNum 最小值
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+ * @param {maxNum} maxNum 最大值
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+ * @return {Number} 返回一个最大值和最小值之间的随机数
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+ */
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+ randomNum(minNum, maxNum) {
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+ switch (arguments.length) {
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+ case 1:
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+ return parseInt(Math.random() * minNum + 1, 10)
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+ case 2:
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+ return parseInt(Math.random() * (maxNum - minNum + 1) + minNum, 10)
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+ default:
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+ return 0
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+ }
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+ }
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}
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export default JSFun()
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