Javascript && operator if first expression is true

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Javascript

In my code I am checking whether or not to execute a block of code using if. The first expression is either true or false, but the second can also be something else. I was wondering whether there is any way to ignore the second expression in a && operator if the first expression is already true.

I hope this example helps in clearifying:

var a = true;
var b = someFunction(); // This returns an object with a boolean property, but can also undefined in some cases
if(a && b.someValue) {
 // do something
}

When b is undefined, it raises an error. However, if a is already true, is there a way not to evaluate b.someValue as that value doesn't matter anymore for the if clause? In the case a is true, the error is unnecessary as b.someValue doesn't need to be evaluated.

Thanks.