JSTests/microbenchmarks/string-trim.js

(function() {
    var shortAscii = "   hello   ";
    var longAscii = "   " + "a".repeat(100) + "   ";
    var noTrim = "hello";
    var allSpaces = "          ";
    var unicode = "   \u65e5\u672c\u8a9e   ";

    for (var i = 0; i < 1e6; i++) {
        shortAscii.trim();
        longAscii.trim();
        noTrim.trim();
        allSpaces.trim();
        unicode.trim();
    }
})();