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44 lines
1.1 KiB
44 lines
1.1 KiB
5 months ago
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var arrayEach = require('./arrayEach')
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var keys = require('./keys')
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var isArray = require('./isArray')
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var clone = require('./clone')
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var objectAssignFns = Object.assign
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function handleAssign (destination, args, isClone) {
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var len = args.length
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for (var source, index = 1; index < len; index++) {
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source = args[index]
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arrayEach(keys(args[index]), isClone ? function (key) {
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destination[key] = clone(source[key], isClone)
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} : function (key) {
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destination[key] = source[key]
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})
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}
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return destination
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}
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/**
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* 将一个或多个源对象复制到目标对象中
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*
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* @param {Object} target 目标对象
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* @param {...Object}
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* @return {Boolean}
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*/
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var assign = function (target) {
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if (target) {
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var args = arguments
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if (target === true) {
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if (args.length > 1) {
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target = isArray(target[1]) ? [] : {}
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return handleAssign(target, args, true)
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}
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} else {
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return objectAssignFns ? objectAssignFns.apply(Object, args) : handleAssign(target, args)
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}
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}
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return target
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}
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module.exports = assign
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