JSFiddle - React, Tailwind, and code Playground

by Lingjia Liu

JavaScript

function addSalt(str) {
   return str.replace(
       /./g, function(char){
           return char+'<span style="font-size:0px;color:#fff;">'+String.fromCharCode(char.charCodeAt(0)+1)+'</span>';
       }
   );
}

var word = document.createElement('p');
word.innerHTML = addSalt('新年快乐')
document.body.appendChild(word);

//alert(addSalt('新年快乐'));