Javascript: window.confirmation

Question

我有一个函数：

function placeOrder(price, productList) {
    var bulletinBoardItem = Number(productList.box1.value);
    var stickersItem = Number(productList.box2.value);
    var cutoutsItem = Number(productList.box3.value);
    var trimmerItem = Number(productList.box4.value);
    var resourceBooksItem = Number(productList.box5.value);
    var price = new Array(5);
        price[0] = 12;
        price[1] = 1; 
        price[2] = 6;
        price[3] = 3;                       
        price[4] = 20; 
    var sumBB = bulletinBoardItem * price[0];
    var sumStickers = stickersItem * price[1];
    var sumCutouts = cutoutsItem * price[2];
    var sumTrimmer = trimmerItem * price[3];
    var sumRB = resourceBooksItem * price[4];
    }

我有一个window.confirm框，我需要引用上面的函数，但在该函数中没有识别出任何变量。我不明白我到底做错了什么。

<input type="button" onClick="placeOrder()" value="Place Order">
    <p id = "order"></p>
<script>
function placeOrder(quantity, price, productList) {
var r = confirm("You've ordered Bulletin Boards");
if (r) {
    window.alert("Your order has been placed!!!")
} else {
    window.alert("Your order has been canceled.");
}
document.getElementById("order").innerHTML = txt;
}

</script>

Answer 1

您正在使用未定义的txt：

document.getElementById("order").innerHTML = txt;

因此，尝试通过任何定义的字符串更改txt，您的脚本不会失败