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🔤String

🚧 under construction -> move 💾 程式

JavaScript strings are encoded as a sequence of 16-bit code units.

Strings

are iterable.

iterator for String works correctly with surrogate pairs. 👉 see： str.slice2()

Any non-nullish value has .toString() method. (usually equivalent to String())

// ⭐️ string.random()
// ⭐️ Note: this may not work well with Unicode❗️ 
String.prototype.random = function(){
    return this[randomInt(this.length)];
}

// ⭐️ string.shuffle()
String.prototype.shuffle = function(){

    var a = this.split("");
    var n = a.length;

    for(var i = n - 1; i > 0; i--) {
        var j = randomInt(i+1);
        [a[i], a[j]] = [a[j], a[i]];
    }

    return a.join("");
}

// ⭐️ String.fromCharCodesBetween(65, 70) -> 'ABCDEF'
String.fromCharCodesBetween = function(from, to){
    let array = [];
    for(let i = from; i <= to; i++) array.push(i);
    return array
        .map(code => String.fromCharCode(code))
        .join('');
};

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Last updated 3 years ago

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