Flexible application of JS(JavaScript) development skills enhances development efficiency🚀 and happiness🥰.
1.“Compare the time.”
“Single-digit numbers in time should be padded with a zero.”
const time1 = "2019-02-14 21:00:00";
const time2 = "2019-05-01 09:00:00";
const overtime = time1 > time2;
// overtime => false
2.“Format the money.”
const ThousandNum = num => num.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ",");
const money = ThousandNum(20190214);
// money => "20,190,214"
3.“Generate a random ID.”
const RandomId = len => Math.random().toString(36).substr(3, len);
const id = RandomId(10);
// id => "jg7zpgiqva"
4.“Generate a random HEX color value.”
const RandomColor = () => "#" + Math.floor(Math.random() * 0xffffff).toString(16).padEnd(6, "0");
const color = RandomColor();
// color => "#f03665"
5.“Generate star ratings.”
const StartScore = rate => "★★★★★☆☆☆☆☆".slice(5 - rate, 10 - rate);
const start = StartScore(3);
// start => "★★★"
6.Operating URL query parameters
const params = new URLSearchParams(location.search.replace(/\?/ig, "")); // location.search = "?name=young&sex=male"
params.has("young"); // true
params.get("sex"); // "male"
7.Round down
Math.floor() for positive numbers, Math.ceil() for…