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20220330_Vote/Ewide.Web.Entry/wwwroot/lib/xe-utils/sample.js

@@ -0,0 +1,21 @@
+var shuffle = require('./shuffle')
+
+/**
+  * 从一个数组中随机返回几个元素
+  *
+  * @param {Array} array 数组
+  * @param {Number} number 个数
+  * @return {Array}
+  */
+function sample (array, number) {
+  var result = shuffle(array)
+  if (arguments.length <= 1) {
+    return result[0]
+  }
+  if (number < result.length) {
+    result.length = number || 0
+  }
+  return result
+}
+
+module.exports = sample