elif exist in js?

if (...) {

} else if (...) {

} else {

}
if ( 100 < 500 ) {
   //any action
}
else if ( 100 > 500 ){
   //any another action
}
if (condition) {

} else if (other_condition) {

} else {

}
switch (true) {
  case condition1:
     //e.g. if (condition1 === true)
     break;
  case condition2:
     //e.g. elseif (condition2 === true)
     break;
  default:
     //e.g. else
}
x = 10;
if(x > 100 ) console.log('over 100')
else if (x > 90 ) console.log('over 90')
else if (x > 50 ) console.log('over 50')
else if (x > 9 ) console.log('over 9')
else console.log('lower 9') 
if (condition) {

} else {

   if (other_condition) {

   } else {

   }

}
if (condition) {
    ...
} else {
    if (condition) {
        ...
    } else {
        ...
    }
}
if(condition)
{

} 
else if(condition)
{

}
else
{

}