var age = '16';
prompt(enter 'age');
if (age > 17) {
alert("good to drive");
} else {
alert("sorry you are not eligible");
}
var age = prompt('enter age');
prompt()
的整个参数必须用引号引起来,并且您需要将结果分配给变量,以便可以在if
语句中使用它。
var age = prompt("Please enter your age"); // Gets input
if (age > 17) {
alert("Good to drive.");
} else {
alert("Sorry you are not eligible.");
}