promise和settimeout有区别为
promise释义:
n. 许诺,允诺希望
vt. 允诺,许诺给人以……的指望或希望
vi. 许诺有指望,有前途
settimeout释义:
settimeout
例句:
var id = setInterval(fn, delay) - Similar to setTimeout but continually calls the function (with a delay every time) until it is canceled.
var id = setInterval(fn delay) - 与setTimeout类似,只不过它会持续地调用指定的函数(每次都有一个延时),直到timer被取消为止。