????????最近在做telegram小程序，所以又回歸了web端了，發(fā)現(xiàn)幾個好用又簡潔的代碼片段，在這里分享一下。

1. ?獲取瀏覽器cookie值

const cookie = name => `; ${document.cookie}`.split(`; ${name}=`).pop().split(';').shift();cookie('_ga');

2.?將RGB轉(zhuǎn)換為16進制

const rgbToHex = (r, g, b) =>
"#" + ((1 << 24) + (r << 16) + (g << 8) + b).toString(16).slice(1);rgbToHex(0, 51, 255);
// Result: #0033ff`

3. 復制到剪切板

const copyToClipboard = (text) => navigator.clipboard.writeText(text);copyToClipboard("Hello World");

?4.?檢查日期是否有效

const isDateValid = (...val) => !Number.isNaN(new Date(...val).valueOf());isDateValid("December 17, 1995 03:24:00");
// Result: true

5.?找出一年中的某一天（即給出一個日期，程序給出屬于本年的第多少天）

const dayOfYear = (date) =>
Math.floor((date - new Date(date.getFullYear(), 0, 0)) / 1000 / 60 / 60 / 24);dayOfYear(new Date());
// Result: 272

6.?將字符串首字母大寫

const capitalize = str => str.charAt(0).toUpperCase() + str.slice(1)capitalize("follow for more")
// Result: Follow for more

7.?計算兩個日期之間相差的天數(shù)

const dayDif = (date1, date2) => Math.ceil(Math.abs(date1.getTime() - date2.getTime()) / 86400000)dayDif(new Date("2020-10-21"), new Date("2021-10-22"))
// Result: 366

8.?清除所有cookie

const clearCookies = document.cookie.split(';').forEach(cookie => document.cookie = cookie.replace(/^ +/, '').replace(/=.\*/, `=;expires=${new Date(0).toUTCString()};path=/`));

9.?生成隨機16進制

const randomHex = () => `#${Math.floor(Math.random() * 0xffffff).toString(16).padEnd(6, "0")}`;console.log(randomHex());
// Result: #92b008

10. 數(shù)組去重

const removeDuplicates = (arr) => [...new Set(arr)];console.log(removeDuplicates([1, 2, 3, 3, 4, 4, 5, 5, 6]));
// Result: [ 1, 2, 3, 4, 5, 6 ]

11.?從URL中獲取查詢參數(shù)

const getParameters = (URL) => {
URL = JSON.parse('{"' + decodeURI(URL.split("?")[1]).replace(/"/g, '\\"').replace(/&/g, '","').replace(/=/g, '":"') +'"}');
return JSON.stringify(URL);
};getParameters(window.location)
// Result: { search : "easy", page : 3 }

12.?獲取用戶選定的文本

const getSelectedText = () => window.getSelection().toString();getSelectedText();

有小伙伴有什么比較好的代碼片段也可以分享出來呀！！！?

? ? ? ??