const freel = new Expedition("Mt. Freel", 2, ["water", "snack"])
export default
freel
当希望导出的数据只包含一种类型时,用户可以使用
export default
替换
export
。当
然,
export
和
export default
都适用于任意
JavaScript
数据类型:基元、对象、数组和
函数。
注
4
还可以使用
import
语句在其他
JavaScript
文件中调用模块。包含多个
exoprt
语句的模块
还可以进行对象解构。使用
epxort default
的模块还可以被导入到单个变量中:
import { print, log } from './text-helpers'
import freel from './mt-freel'
print('printing a message')
log('logging a message')
freel.print()
用户甚至可以通过别名实现模块变量的本地化:
import { print as p, log as l } from './text-helpers'
p('printing a message')
l('logging a message')
用户还可以通过星号
*
将所有信息导入单个变量中:
import * as fns from './text-helpers
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