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

How to convert one emoji character to Unicode codepoint number in JavaScript?

如何将 </code> 转换为 <strong>javascript</strong></p> 中的 <code>1f600

''.charCodeAt(0);  

这将 return unicode 55357 但如何从

获取 1f600

请阅读This Link

函数如下:

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);
}

添加了脚本以在浏览器端转换它

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"

感谢https://www.npmjs.com/package/emoji-unicode

这是我用的:

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);
};

这是另一种方法。 Source

 "".codePointAt(0).toString(16)

双向

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

console.log(hex, emo);

要将表情符号转换为 unicode,您可以使用 emoji-unicode 包:

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

我认为最好的答案是使用 node-emoji 包。

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

步骤如下。

  1. 执行 npm i node-emoji

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