Better referencing syntax for nested objects?

Question

I could not find anything online, but I'm curious if there's a more concise syntax for the following example:

if ( obj[a][b][c] != 0 ) {
    obj[a][b][c] = ( obj[a][b][c] / 2 ) + obj[a][b][c] + 100;
    obj[x][y][z] = obj[a][b][c];
}

I know for the times that I'm working with the actual value I could just cache it in a temporary variable, but I'm more interested in replacing the "obj[...] = " part with something more concise.

obj[a][b][c]=obj[x][y][z]=(a=>a?a/2+a+100:a)(obj[a][b][c]);

Jonas Wilms
– Jonas Wilms

2017-06-22 10:31:53 +00:00
Commented Jun 22, 2017 at 10:31 — Jonas Wilms
– Jonas Wilms, Commented Jun 22, 2017 at 10:31

deathangel908 · Accepted Answer · 2017-06-22 10:48:28Z

3

Well you could extract a variable and as @Jonas W noted in the comments you can combine assigments:

var cellP = obj[a][b];
var cell = cellP[c];
if ( cell != 0 ) {
    obj[x][y][z] = cellP[c] = 1.5 * cell + 100;
}

edited Jun 22, 2017 at 10:48

answered Jun 22, 2017 at 10:33

deathangel908

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