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RangeError: invalid array length

    RangeError: invalid array length (Firefox)
    RangeError: Invalid array length (Chrome)
    RangeError: Invalid array buffer length (Chrome)

In this article

RangeError

?

:

Array ArrayBuffer , Array ArrayBuffer length (unsigned) 32 . Array ArrayBuffer 0 ~2^32-1 .

Array length argument contructor Array .

, length length , constructor aurgment .

js
new Array(Math.pow(2, 40));
new Array(-1);
new ArrayBuffer(Math.pow(2, 32));
new ArrayBuffer(-1);

let a = [];
a.length = a.length - 1; // set -1 to the length property

let b = new Array(Math.pow(2, 32) - 1);
b.length = b.length + 1; // set 2^32 to the length property

js
[Math.pow(2, 40)]; // [ 1099511627776 ]
[-1]; // [ -1 ]
new ArrayBuffer(Math.pow(2, 32) - 1);
new ArrayBuffer(0);

let a = [];
a.length = Math.max(0, a.length - 1);

let b = new Array(Math.pow(2, 32) - 1);
b.length = Math.min(0xffffffff, b.length + 1);

// 0xffffffff is the hexadecimal notation for 2^32 - 1
// which can also be written as (-1 >>> 0)

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