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javascriptstringnumberslocale

How to correctly assert values returned by Number.prototype.toLocaleString("sv-SE")?

While writing tests for a value formatter service I noticed that there is something odd about Number.prototype.toLocaleString("sv-SE").

let myValue = (100000).toLocaleString("sv-SE");

console.log(typeof myValue);
console.log(myValue);
console.log(myValue === "100 000"); // false, why?

I expect the last log statement to return true. But it does not, why?

Solution

  • As mentioned in my comment, the "space character" is actually U+00A0 (NO-BREAK SPACE). This character looks exactly like a normal space but isn't applicable for end-of-line word-wrap algorithms.

    The following code works as expected:

    let myValue = (100000).toLocaleString("sv-SE");

console.log(typeof myValue);
console.log(myValue);
console.log(myValue === "100\u00a0000");