如何将一个表情符号字符转换为 JavaScript 中的 Unicode 代码点编号？

Question

how to convert thisinto this 1f600 in javascript

'😀'.charCodeAt(0);  

this will return unicode 55357 but how to get 1f600 from

Answer 1

Added script to convert this on browser side

function emojiUnicode (emoji) {
    var comp;
    if (emoji.length === 1) {
        comp = emoji.charCodeAt(0);
    }
    comp = (
        (emoji.charCodeAt(0) - 0xD800) * 0x400
      + (emoji.charCodeAt(1) - 0xDC00) + 0x10000
    );
    if (comp < 0) {
        comp = emoji.charCodeAt(0);
    }
    return comp.toString("16");
};
emojiUnicode("😀"); # result "1f600"

thanks to https://www.npmjs.com/package/emoji-unicode

Answer 2

Two way

 let hex = "😀".codePointAt(0).toString(16) let emo = String.fromCodePoint("0x"+hex); console.log(hex, emo);

Answer 3

This is what I use:

const toUni = function (str) {
  if (str.length < 4)
    return str.codePointAt(0).toString(16);
  return str.codePointAt(0).toString(16) + '-' + str.codePointAt(2).toString(16);
};

Answer 4

Please Read This Link .

Here is the function :

function toUTF16(codePoint) {
var TEN_BITS = parseInt('1111111111', 2);
function u(codeUnit) {
  return '\\u'+codeUnit.toString(16).toUpperCase();
}

if (codePoint <= 0xFFFF) {
  return u(codePoint);
}
codePoint -= 0x10000;

// Shift right to get to most significant 10 bits
var leadSurrogate = 0xD800 + (codePoint >> 10);

// Mask to get least significant 10 bits
var tailSurrogate = 0xDC00 + (codePoint & TEN_BITS);

 return u(leadSurrogate) + u(tailSurrogate);
}

Answer 5

Here is another way. Source

 "😀".codePointAt(0).toString(16)

Answer 6

Emojis like ⚕️ have two parts: +⚕️.
Here is how to get their code:

 emoji = "⚕️" // corresponds to 1f469-200d-2695-fe0f code1 = emoji.codePointAt(0).toString(16) // gives only 1f469 code2 = [...emoji].map(e => e.codePointAt(0).toString(16)).join(`-`) // gives correctly 1f469-200d-2695-fe0f console.log(code1) console.log(code2)

Answer 7

For emoji to unicode convertion you can use emoji-unicode package:

const emojiUnicode = require("emoji-unicode");
   
console.log(emojiUnicode("🔥"));
// => 1f525

Answer 8

const 
  getUnicodeHex = char => char.codePointAt(0).toString(16),    
  getEmoji = unicodeHex => String.fromCodePoint(unicodeHex)

console.log(
  getUnicodeHex('😀'),  // 1f600
  getEmoji(0x1f600)     // 😀
)

Answer 9

Best answer in my view is to use node-emoji package.

https://www.npmjs.com/package/node-emoji

Here are steps.

1. do npm i node-emoji

    var emoji = require('node-emoji'); var convertEmoji = function(data){ if(emoji.hasEmoji(data)){ return emoji.unemojify(data); } else{ return data; } }