does if statements need else code example

Example 1: javascript how to do else if

if (condition1) {
  //  block of code to be executed if condition1 is true
} else if (condition2) {
  //  block of code to be executed if the condition1 is false and condition2 is true
} else {
  //  block of code to be executed if the condition1 is false and condition2 is false
}

Example 2: javascript if elseif

if (condition) {

} else if (other_condition) {

} else {

}