三元运算符

Posted 2021-01-13 zhangao

<script>
	var a = 4;
	var b = 5;
	//如果a<b输出a-b的结果 否则输出b-a的结果
	var c = (a < b) ? (a - b) : (b - a);
	console.log(c);
	var age = 20;
	//如果年龄满18岁就输出成年人，否则输出未成年
	var age = 2;
	var d = (age >= 18)?‘成年人‘:‘未成年‘;
	console.log(d);
	</script>