jsのif.else if...else

	
		var age = 15;
		if(age > 4 && age < 7){
			document.write("      ")
		}else if( age >= 7 && age <= 12){
			document.write("     ");
		}else if(age > 12 && age <= 15){
			document.write("     ");
		}else if(age > 15 && age <= 18){
			document.write("     ");
		}else if(age > 18 && age <= 22){
			document.write("     ");
		}else{
			document.write("        " + " " + "    ");
		}