how to make an if statement in javascript

// a loop is where you say i = 5 and if i < 6 {
 // print("hdyugvryvg");
// it means i = 5 and 6 is greater than 5 so it should print out hdyugvryvg 5 times
//}

// example

for (let i = 0; i < 10000; i++) {
 	console.log('huduiduin 100000 times'); 
}



// dont try this put a lower number this nearly crashed my browservar age=20;
if (age < 18) {
	console.log("underage");
} else {
	console.log("let em in!");
}if(condition1) { //runs if the condition is true
  //type what you want to happen if the condition is true
}else if (condition2) {
  //type what you want to happen if the condition is true
} else { //If no condition is true it will run this
  //type what you want it to do
}