Is there a way to edit many values in an array without crashing my page? [closed]

Is there a way to edit many values in an array without crashing my page?Because when I try to edit many values at a time:

example0 = [a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y];example1 = [aX, bX, cX, dX, eX, fX, gX, hX, iX, jX, kX, lX, mX, nX, oX, pX, qX, rX, sX, tX, uX, vX, wX, xX, yX];

My page crashes.