nested else if in javascript code example

Example 1: nested if javascript

if(a == 'value'){
    doSomething();
    if(b == 'another value'){
        doAnotherThing();
    }
}

Example 2: how many else statements can be added in javascript

if (condition a) {
    // code that will execute if condition a is true
} else if (condition b) {
    // code that will execute if condition b is true
} else if (condition c) {
    // code that will execute if condition c is true
} else {
    // code that will execute if all above conditions are false
}