我的警報框不起作用
[英]My alert box isn't working
問題描述
對於2個警報（它們是相同的）“ alert（“您訂購的披薩是：” + fullOrder）“它們實際上無法正常運行。 一切正常，直到我收到警報，然后它們才出現。 （它們鏈接到數組，因此我認為可能與此有關。
那么，有人知道我做錯了嗎？ 我對需要做的事情有一個模糊的想法，但是不知道該怎么做。 函數order（）var fullOrder中的局部變量需要進入另一個函數calculate（）。 請幫忙！！
<html> <script> //Global variables var totalNumber = 0; // Total number of pizzas ordered var pizzaPrice = 9.50; // price of plain pizza var pizzaPriceGourmet = 15.50; //price of gourmet pizza var orderTotalPrice = 0; // total cost of order var pizzaDeliveryPrice = 5; // price for pizza delivery var FullOrder = 0; // number of pizza's ordered var customerName = prompt("Please enter your name.") //prompt to get the customers name var customerNumber = prompt("Please enter your phone number.") //prompt to get the customers number { if ( isNaN(customerNumber) || customerNumber < 8400000 || customerNumber > 999999999 ) { // Checks if customerNumber is greater than 9999999 alert("Please enter a 7-digit telephone number between 8600000 - 9999999 Select the 'cancel order' button and enter a valid telephone number!"); // asks customer to enter a valid telephone number } else alert("Lets continue!"); // Continues to main website } order();//call order calculate(totalGourmet,totalPlain);// while calling function order() { var pizza = new Array() pizza[0] = document.form.hawaiian.value //allocates type of pizza in array pizza[0] = Number(pizza[0]) //converts to number value pizza[1] = document.form.cheese.value //allocates type of pizza in array pizza[1] = Number(pizza[1]) //converts to number value pizza[2] = document.form.veggie.value //allocates type of pizza in array pizza[2] = Number(pizza[2]) //converts to number value pizza[3] = document.form.supreme.value //allocates type of pizza in array pizza[3] = Number(pizza[3]) //converts to number value pizza[4] = document.form.pepperoni.value //allocates type of pizza in array pizza[4] = Number(pizza[4]) //converts to number value pizza[5] = document.form.meatlovers.value //allocates type of pizza in array pizza[5] = Number(pizza[5]) //converts to number value pizza[6] = document.form.chicken.value //allocates type of pizza in array pizza[6] = Number(pizza[6]) //converts to number value pizza[7] = document.form.prawn.value //allocates type of pizza in array pizza[7] = Number(pizza[7]) //converts to number value totalPlain = pizza[0] + pizza[1] + pizza[2] + pizza[3] + pizza[4]; totalGourmet = pizza[5] + pizza[6] + pizza[7]; var totalNumber = totalGourmet + totalPlain var fullOrder = alert("You have ordered: " + "\\n" + <----- I NEED THIS "Hawaiian Pizza ($9.50): " + pizza [0] + "\\n" + "Cheese Pizza ($9.50): " + pizza [1] + "\\n" + "Veggie Pizza ($9.50): " + pizza [2] + "\\n" + "Supreme Pizza ($9.50): " + pizza [3] + "\\n" + "Pepperoni Pizza ($9.50): " + pizza [4] + "\\n" + "Meat-Lovers Pizza ($15.50): " + pizza [5] + "\\n" + "Chicken Pizza ($15.50): " + pizza [6] + "\\n" + "Prawn Pizza ($15.50): " + pizza [7]); if (totalNumber >12) { // Limit for total amount of Pizzas ordered alert("There is a limit of 12 pizzas per order. - PRESS 'Prevent this page from creating additional dialogs' THEN PRESS 'cancel order' AND THEN RE-ORDER! - Current total is: " +totalNumber); } else alert("Total number of pizzas ordered: " + totalNumber); //Total amount of pizzas ordered calculate(totalGourmet,totalPlain) //Begins calculation function } function calculate(totalGourmet,totalPlain) //Function for the cost of the order { orderTotalPrice = (totalPlain*pizzaPrice + totalGourmet*pizzaPriceGourmet); //order total+ amount of pizzas ordered * pizza price var pizzaDelivery = prompt('Would you like your order to be delivered for $5, or for pick up? -Type in "1" for delivery, and "0" for pickup.') //asks if you want your order to be delivered or pickup orderTotalPrice = (orderTotalPrice + (pizzaDelivery*pizzaDeliveryPrice)); // calculates the total cost with/without the delivery cost alert("Total cost of pizzas is: $" + orderTotalPrice.toFixed(2) ); //Display order cost as "$"0.00 (2 decimal points) if (pizzaDelivery == '1'){ var response = prompt("Please enter your address: ") alert("Your pizza should be delivered within the next 25 minutes, to this address: " +response) alert("Thank you for ordering with Pete's Pizzas " +customerName) alert("If anything goes wrong we will contact you on your number: " +customerNumber) alert("The pizzas you ordered are: " +fullOrder) <----TO BE HERE alert("Your order details are: " +customerName +"\\n" +customerNumber +"\\n" +response) alert("To exit, just click 'ok' and then close down the program!") } else if (pizzaDelivery == '0'){ alert("Your order will be ready for pickup in 15 minutes!") alert("Thank you for ordering with Pete's Pizzas " +customerName) alert("If anything goes wrong we will contact you on your number: " +customerNumber) alert("The pizzas you ordered are: " +fullOrder) <----TO BE HERE alert("Your order details are: " +customerName +"\\n" +customerNumber) alert("To exit, just click 'ok' and then close down the program!") } } </script> <body> <h1> Welcome to Pete's Pizza! </h1> <p> Please follow the prompts to place your order. </p> <h2> Menu: </h2> <h3>($9.50) Hawaiian, Cheese, Veggie, supreme, pepperoni.</h3> <h3>($15.50) meat-lovers, chicken, prawn. </h3> <p><b>BE AWARE</b> that there is a $5 charge for deliveries. </p> <p> (Please note : Maximum 12 pizzas per Order ) </p> <form name ="form"> <input type="text" name= "hawaiian" > Hawaiian Pizza <br> <input type="text" name= "cheese" > Cheese Pizza <br> <input type="text" name= "veggie" > Veggie Pizza <br> <input type="text" name= "supreme" > Supreme Pizza <br> <input type="text" name= "pepperoni" > Pepperoni Pizza <br> <input type="text" name= "meatlovers" > MeatLovers Pizza <br> <input type="text" name= "chicken" > Chicken Pizza <br> <input type="text" name= "prawn" > Prawn Pizza <br> <input type="button" value="order now" onClick="order()"> <input type="button" value="cancel order" onClick="window.location.reload()"> </form> <i> If you need to cancel the order press the 'Prevent this page from creating additional dialogs' button, then press the "cancel order" button. (This will take you back to the begging of the program.) </i> </body> </html>
2 個解決方案
解決方案1
0 2017-05-08 10:52:25
正如@Weedoze已經提到的那樣，您的代碼中存在一些語法錯誤。 解決它們只是解決了這個問題。 您可以在此處檢查運行代碼。 更准確地說，此行有幾種用法：
<----- I NEED THIS
為了防止將來的版本中出現語法錯誤，您可以使用適當的IDE或僅使用文本編輯器（包括語法突出顯示）。
解決方案2
0 2017-05-08 10:54:36
對javascript和html的評論是不同的。
<html> <script> //Global variables var totalNumber = 0; // Total number of pizzas ordered var pizzaPrice = 9.50; // price of plain pizza var pizzaPriceGourmet = 15.50; //price of gourmet pizza var orderTotalPrice = 0; // total cost of order var pizzaDeliveryPrice = 5; // price for pizza delivery var FullOrder = 0; // number of pizza's ordered var customerName = prompt("Please enter your name.") //prompt to get the customers name var customerNumber = prompt("Please enter your phone number.") //prompt to get the customers number { if ( isNaN(customerNumber) || customerNumber < 8400000 || customerNumber > 999999999 ) { // Checks if customerNumber is greater than 9999999 alert("Please enter a 7-digit telephone number between 8600000 - 9999999 Select the 'cancel order' button and enter a valid telephone number!"); // asks customer to enter a valid telephone number } else alert("Lets continue!"); // Continues to main website } order();//call order calculate(totalGourmet,totalPlain);// while calling function order() { var pizza = new Array() pizza[0] = document.form.hawaiian.value //allocates type of pizza in array pizza[0] = Number(pizza[0]) //converts to number value pizza[1] = document.form.cheese.value //allocates type of pizza in array pizza[1] = Number(pizza[1]) //converts to number value pizza[2] = document.form.veggie.value //allocates type of pizza in array pizza[2] = Number(pizza[2]) //converts to number value pizza[3] = document.form.supreme.value //allocates type of pizza in array pizza[3] = Number(pizza[3]) //converts to number value pizza[4] = document.form.pepperoni.value //allocates type of pizza in array pizza[4] = Number(pizza[4]) //converts to number value pizza[5] = document.form.meatlovers.value //allocates type of pizza in array pizza[5] = Number(pizza[5]) //converts to number value pizza[6] = document.form.chicken.value //allocates type of pizza in array pizza[6] = Number(pizza[6]) //converts to number value pizza[7] = document.form.prawn.value //allocates type of pizza in array pizza[7] = Number(pizza[7]) //converts to number value totalPlain = pizza[0] + pizza[1] + pizza[2] + pizza[3] + pizza[4]; totalGourmet = pizza[5] + pizza[6] + pizza[7]; var totalNumber = totalGourmet + totalPlain var fullOrder = alert("You have ordered: " + "\\n" + "Hawaiian Pizza ($9.50): " + pizza [0] + "\\n" + "Cheese Pizza ($9.50): " + pizza [1] + "\\n" + "Veggie Pizza ($9.50): " + pizza [2] + "\\n" + "Supreme Pizza ($9.50): " + pizza [3] + "\\n" + "Pepperoni Pizza ($9.50): " + pizza [4] + "\\n" + "Meat-Lovers Pizza ($15.50): " + pizza [5] + "\\n" + "Chicken Pizza ($15.50): " + pizza [6] + "\\n" + "Prawn Pizza ($15.50): " + pizza [7]); if (totalNumber >12) { // Limit for total amount of Pizzas ordered alert("There is a limit of 12 pizzas per order. - PRESS 'Prevent this page from creating additional dialogs' THEN PRESS 'cancel order' AND THEN RE-ORDER! - Current total is: " +totalNumber); } else alert("Total number of pizzas ordered: " + totalNumber); //Total amount of pizzas ordered calculate(totalGourmet,totalPlain) //Begins calculation function } function calculate(totalGourmet,totalPlain) //Function for the cost of the order { orderTotalPrice = (totalPlain*pizzaPrice + totalGourmet*pizzaPriceGourmet); //order total+ amount of pizzas ordered * pizza price var pizzaDelivery = prompt('Would you like your order to be delivered for $5, or for pick up? -Type in "1" for delivery, and "0" for pickup.') //asks if you want your order to be delivered or pickup orderTotalPrice = (orderTotalPrice + (pizzaDelivery*pizzaDeliveryPrice)); // calculates the total cost with/without the delivery cost alert("Total cost of pizzas is: $" + orderTotalPrice.toFixed(2) ); //Display order cost as "$"0.00 (2 decimal points) if (pizzaDelivery == '1'){ var response = prompt("Please enter your address: ") alert("Your pizza should be delivered within the next 25 minutes, to this address: " +response) alert("Thank you for ordering with Pete's Pizzas " +customerName) alert("If anything goes wrong we will contact you on your number: " +customerNumber) alert("The pizzas you ordered are: " +fullOrder) alert("Your order details are: " +customerName +"\\n" +customerNumber +"\\n" +response) alert("To exit, just click 'ok' and then close down the program!") } else if (pizzaDelivery == '0'){ alert("Your order will be ready for pickup in 15 minutes!") alert("Thank you for ordering with Pete's Pizzas " +customerName) alert("If anything goes wrong we will contact you on your number: " +customerNumber) alert("The pizzas you ordered are: " +fullOrder); alert("Your order details are: " +customerName +"\\n" +customerNumber) alert("To exit, just click 'ok' and then close down the program!") } } </script> <body> <h1> Welcome to Pete's Pizza! </h1> <p> Please follow the prompts to place your order. </p> <h2> Menu: </h2> <h3>($9.50) Hawaiian, Cheese, Veggie, supreme, pepperoni.</h3> <h3>($15.50) meat-lovers, chicken, prawn. </h3> <p><b>BE AWARE</b> that there is a $5 charge for deliveries. </p> <p> (Please note : Maximum 12 pizzas per Order ) </p> <form name ="form"> <input type="text" name= "hawaiian" > Hawaiian Pizza <br> <input type="text" name= "cheese" > Cheese Pizza <br> <input type="text" name= "veggie" > Veggie Pizza <br> <input type="text" name= "supreme" > Supreme Pizza <br> <input type="text" name= "pepperoni" > Pepperoni Pizza <br> <input type="text" name= "meatlovers" > MeatLovers Pizza <br> <input type="text" name= "chicken" > Chicken Pizza <br> <input type="text" name= "prawn" > Prawn Pizza <br> <input type="button" value="order now" onClick="order()"> <input type="button" value="cancel order" onClick="window.location.reload()"> </form> <i> If you need to cancel the order press the 'Prevent this page from creating additional dialogs' button, then press the "cancel order" button. (This will take you back to the begging of the program.) </i> </body> </html>
為什么我的 if 條件不適用於 javascript 中的 select 框？
[英]Why my if condition isn't working with select box in javascript?
如果 JavaScript 中未選中任何復選框，則需要顯示警報，我當前的方法不起作用
[英]Need to display alert if no checkboxes are selected in JavaScript, my current method isn't working
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