How to optimize a large number of if-else if-else expressions

Question

here is the some sample line of codes..

if(loc > 0 || cat > 0 || price > 0 || jsBed <= bedroom || jsBuilt >= built) {    
 /// Condition to checn all true
    return true;
} else if(loc < 0 || cat > 0 || price > 0 || jsBed <= bedroom || jsBuilt >= built) { 
   /////// 1 false other are true 

} else if(loc > 0 || cat < 0 || price > 0 || jsBed <= bedroom || jsBuilt >= built) { 

}

How to handle these condition. if i have 5 statement. Then it must be almost 12+ condition one by one.. if i am checking all the 5 combinations its going to more lines of code do we have any better option to check all the conditions.

Answer 1

If you treat a boolean expression as an integer in javascript, it will evaluate to 0 (for false) or 1 (for true). So you could sum the conditions and then use a switch-case construct to check how many were true:

var numTrue = 
   (loc > 0) + (cat > 0) + (price > 0) + (jsBed <= bedroom) + (jsBuilt >= built);

switch(numTrue) {
    case 0:
        // do something if no condition is met
        break;
    case 1:
        // do something else if one condition is met
        break;
    // etc...
}