I wrote a code before, the general logic is as follows

    function control (type) {
    if (type == 1){
     console.log("功能1");
    
    }else {
    console.log("功能2");
    
    }
    
    }

Because the previous business logic requirements only have function 1 and function 2, function 1 will be executed when control(1) is executed, and function 2 will be executed for the rest

Now the requirements have been changed and a function 3 needs to be added because the previous logic was complicated and I did not want to change the previous logic nesting

function control (type) {
if (type == 1){
 console.log("功能1");

}else {
console.log("功能2");

}
 if(type == 3){
 console.log("功能3");

}

}
control(3);

In this case, function 3 and function 2 are executed together. How can I only execute function 3

No need to switch case