javascript - string.slice()无法按预期工作

我正在使用slice()分解字符串，但是无法正常工作。

字符串:

var datept = "2018-01-19"
var timept = "12:05"

不相交:

var month = datept.slice(5, -3); // should: "01" is: "01"
var day = datept.slice(8, -0); // should: "19" is: ""    --  WRONG
var year = datept.slice(0, -6); // should: "2018" is: "2018"
var hours = timept.slice(0, -3); // should: "12" is: "12"
var minutes = timept.slice(3, -0); // should: "05" is: "" -- WRONG

还尝试了:

var day = datept.slice(-8, -0); // or
var day = datept.slice(8, -0);  // or
var day = datept.slice(-8, 0);  // or
var day = datept.slice(8, 0);

最佳答案

您可以分割日期，并使用destructuring assignment作为值。

var datept = "2018-01-19",
    timept = "12:05",
    [year, month, day] = datept.split('-'),
    [hours, minutes] = timept.split(':');

console.log(year, month, day);
console.log(hours, minutes);

关于javascript - string.slice()无法按预期工作，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/48342693/