<pre class="shiki github-dark shaku"><code>/** * @param {string} translation * @param {any} data * @returns {string} */function t(translation, data) { let reg=/{{(}?[^}]+)*}}/ while(reg.test(translation)){ let str=reg.exec(translation)[0] str=str.substring(2,str.length-2) translation=translation.replace(reg,(data&amp;&amp;str in data?data[str]:'')) } return translation}</code></pre>

very  simple solution with regExp

Have you ever added i18n support to your projects? Take i18next as an example, generally the keys and translations are kept separately, like this JSON…