???let data = {} ???????data.a=1 ???????data.b=16 ???????function fa({a=1,b=3}){ ???????????console.log(a) ???????????console.log(b) ???????} ???????fa(data) ???????function fb(a=1,b=3){ ???????????console.log(a) ???????????console.log(b) ???????} ???????fb() ???
js函数默认参数
原文地址：https://www.cnblogs.com/fm060/p/10447750.html