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

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+var helperDeleteProperty = require('./helperDeleteProperty')
+
+var isPlainObject = require('./isPlainObject')
+var isObject = require('./isObject')
+var isArray = require('./isArray')
+var isNull = require('./isNull')
+var assign = require('./assign')
+var objectEach = require('./objectEach')
+
+/**
+  * 清空对象
+  *
+  * @param {Object} obj 对象
+  * @param {*} defs 默认值,如果不传（清空所有属性）、如果传对象（清空并继承)、如果传值(给所有赋值)
+  * @param {Object/Array} assigns 默认值
+  * @return {Object}
+  */
+function clear (obj, defs, assigns) {
+  if (obj) {
+    var len
+    var isDefs = arguments.length > 1 && (isNull(defs) || !isObject(defs))
+    var extds = isDefs ? assigns : defs
+    if (isPlainObject(obj)) {
+      objectEach(obj, isDefs ? function (val, key) {
+        obj[key] = defs
+      } : function (val, key) {
+        helperDeleteProperty(obj, key)
+      })
+      if (extds) {
+        assign(obj, extds)
+      }
+    } else if (isArray(obj)) {
+      if (isDefs) {
+        len = obj.length
+        while (len > 0) {
+          len--
+          obj[len] = defs
+        }
+      } else {
+        obj.length = 0
+      }
+      if (extds) {
+        obj.push.apply(obj, extds)
+      }
+    }
+  }
+  return obj
+}
+
+module.exports = clear