我想我已經做對了一切，但由于某種原因，代碼無法正常作業。
function checkDriverAge() {
var age = prompt("What is your age?");
if (Number(age) < 18) {
alert("Sorry, you are too young to drive this car. Powering off");
} else if (Number(age) > 18) {
alert("Powering On. Enjoy the ride!");
} else if (Number(age) === 18) {
alert("Congratulations on your first year of driving. Enjoy the ride!");
}
}
uj5u.com熱心網友回復：
如果這是完整的代碼，那么我認為您忘記在某處運行此功能。例如，如果我在頁面加載時運行此代碼，則它可以 100% 運行：
// insert this code into html file
<script>
(function() {
var age = prompt("What is your age?");
if (Number(age) < 18) {
alert("Sorry, you are too young to drive this car. Powering off");
} else if (Number(age) > 18) {
alert("Powering On. Enjoy the ride!");
} else if (Number(age) === 18) {
alert("Congratulations on your first year of driving. Enjoy the ride!");
}
})();
</script>
uj5u.com熱心網友回復：
我認為代碼是正確的。但是，請確保正確呼叫函式。如果你想點擊特定按鈕，它會像，<button onclick="checkDriverAge()"> Check Average </button>
或者如果你需要它在檔案準備好時出現，它會像$( document ).ready(function() { checkDriverAge(); });
轉載請註明出處，本文鏈接：https://www.uj5u.com/qiye/355183.html
標籤：javascript
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