実際に署名が必要な場合は、Uint32Array on MDNをチェックしてください。
しかし、実際に値を符号なしで取得することはないので、単純なモジュラス演算が有効でしょうか?
//Create var as array of length 1
var arr = new Uint32Array(1);
//set first value to 1
arr[0] = 1;
//output contents
console.log(arr);
//substract to "negative"
arr[0] -= 2;
//output contents
console.log(arr);
//Object with setter, to make it simpler
var my_obj = Object.create({
//This is our value
value: 0
}, {
//This is our setter
set: {
value: function(a) {
//Make incoming value a modulus of some integer
//I just use 1000 for the example
var max = 1000;
a = a % max;
//Force a positive
while (a < 0) {
a += max;
}
//Set value
this.value = a;
//Return object regerence for chaining
return this;
}
}
});
console.log("0:", my_obj.value);
my_obj.set(500);
console.log("500:", my_obj.value);
my_obj.set(-0);
console.log("-0:", my_obj.value);
my_obj.set(-1);
console.log("-1:", my_obj.value);
my_obj.set(-100);
console.log("-100:", my_obj.value);
my_obj.set(-0);
console.log("-0:", my_obj.value);
や機能を持つモジュラス:
function modulusMax(value, a) {
//Make incoming value a modulus of some integer
//I just use 1000 for the example
var max = 1000;
a = a % max;
//Force a positive
while (a < 0) {
a += max;
}
//Set value
value = a;
//Return object regerence for chaining
return value;
}
var v = 0;
console.log("0:", modulusMax(v, 0));
console.log("500:", modulusMax(v, 500));
console.log("-0:", modulusMax(v, -0));
console.log("-1:", modulusMax(v, -1));
console.log("-100:", modulusMax(v, -100));
console.log("1100:", modulusMax(v, 1100));
console.log("-0:", modulusMax(v, -0));
JavaScriptで組み込みの符号なし整数型がありません。私は型付きのArrayBuffer(Uint32Array)を使うことができると思います。 – Thilo