score:1
Accepted answer
you should do like this:
console.log(fromtoparameters[7] && fromtoparameters[7].value.firstinput);
console.log(!!fromtoparameters[7] && fromtoparameters[7].value.firstinput);
console.log( fromtoparameters[7]&& typeof fromtoparameters[7].value.firstinput == 'undefined');
i have just added check. so if fromtoparameters[7]
is undefined
or null
, your code will not break.
score:1
check for the index first (ex: console.log(!yourarray[x]), then depending if that test passes or fails, access/add the indexes/properties you want.
Source: stackoverflow.com
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