51 lines
1.3 KiB
JavaScript
51 lines
1.3 KiB
JavaScript
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var helperDeleteProperty = require('./helperDeleteProperty')
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var isPlainObject = require('./isPlainObject')
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var isObject = require('./isObject')
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var isArray = require('./isArray')
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var isNull = require('./isNull')
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var assign = require('../object/assign')
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var objectEach = require('../object/objectEach')
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/**
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* 清空对象
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*
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* @param {Object} obj 对象
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* @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)
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* @param {Object/Array} assigns 默认值
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* @return {Object}
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*/
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function clear (obj, defs, assigns) {
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if (obj) {
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var len
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var isDefs = arguments.length > 1 && (isNull(defs) || !isObject(defs))
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var extds = isDefs ? assigns : defs
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if (isPlainObject(obj)) {
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objectEach(obj, isDefs ? function (val, key) {
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obj[key] = defs
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} : function (val, key) {
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helperDeleteProperty(obj, key)
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})
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if (extds) {
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assign(obj, extds)
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}
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} else if (isArray(obj)) {
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if (isDefs) {
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len = obj.length
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while (len > 0) {
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len--
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obj[len] = defs
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}
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} else {
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obj.length = 0
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}
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if (extds) {
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obj.push.apply(obj, extds)
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}
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}
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}
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return obj
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}
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module.exports = clear
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