Calling Google Translate from JS, no API Key needed

google-translate.js

/*
	Calling of simple Google API to translate short pieces of text.
	Requires no API key :)
	WARNING: This call has a severe rate limitation. Frequent calls will result in a temporary block for your IP address for a few hours.

	INPUT:
	- source language code, eg: "ru"
	- target language code, eg: "en"
	- text to be translated

	OUTPUT:
	- a promise that resolves to an array containing the sentences of the translated text. Each sentence in the original text is one item.

Based on Amit Agarwal's article: https://ctrlq.org/code/19909-google-translate-api
*/
function translate(src,tgt,text){
	var url = `https://translate.googleapis.com/translate_a/single?client=gtx&sl=${src}&tl=${tgt}&dt=t&q=` + encodeURI(text);
	return fetch(url).then(x=>x.json()).then(x=>x[0].map(v=>v[0]) )
}

//############# EXAMPLE ############################################
translate("ru","en","Привет! Как Дела?").then(v=>console.log(v.join("")))
/*output: 
 Hello! How are you?
*/