I have a javascript string which is about 500K when being sent from the server in UTF-8. How can I tell its size in JavaScript?
I know that JavaScript uses UCS-2, so does that mean 2 bytes per character. However, does it depend on the JavaScript implementation? Or on the page encoding or maybe content-type?
You can use the Blob to get the string size in bytes.
Examples:
console.info(
new Blob(['😂']).size, // 4
new Blob(['👍']).size, // 4
new Blob(['😂👍']).size, // 8
new Blob(['👍😂']).size, // 8
new Blob(['I'm a string']).size, // 12
// from Premasagar correction of Lauri's answer for
// strings containing lone characters in the surrogate pair range:
// https://stackoverflow.com/a/39488643/6225838
new Blob([String.fromCharCode(55555)]).size, // 3
new Blob([String.fromCharCode(55555, 57000)]).size // 4 (not 6)
);
