我的javaScript函數不工作，有人可以指導我爲什麼他們不工作。謝謝

Question

我無法讓我的功能工作。我已經標記我的所有功能：

//This function validates the checkboxes: 
 
// I am trying to use this function to validate checkboxes: 
 
function checkCheckBoxes() { 
 
    if (theForm.dinner.checked == false) { 
 
    alert('You did not select a dish!'); 
 
    return false; 
 
    } else { 
 
    return true; 
 
    } 
 
} 
 

 
//this funciton validates the quantity entered to be a number: 
 
//I am trying to use this function to make sure the character they input in the quantity box is a number: 
 
function checkForNumber(fieldValue) { 
 
    var numberCheck = isNan(fieldValue); 
 
    if (numbercheck == true) { 
 
    window.alert("You must enter a numeric value!"); 
 
    return false; 
 
    } else { 
 
    return true; 
 
    } 
 
} 
 

 
// This function is supposed to ask the user to make sure they want to hit submit or reset: 
 
//this function is to ask the user if they really want to submit the form or if they really want to reset the form: 
 
function confirmSubmit() { 
 
    var submitForm = window.confirm('Are you sure you want to submit the form?'); 
 
    if (submitForm == true) 
 
    return true; 
 
    return false; 
 
} 
 

 
function confirmReset() { 
 
    var resetForm = window.confirm('Are you sure you want to reset the form?'); 
 
    if (resetForm == true) 
 
    return true; 
 
    return false; 
 
} 
 

 
//this function is used to validate the checkboxes: 
 
function submitForm() { 
 
    var dinner = false; 
 
    for (var i = 0; i < 4; ++i) { 
 
    if (document.forms[0].dinner[i].checked == true) { 
 
     dinner = true; 
 
     break; 
 
    } 
 
    } 
 
    if (dinner == false) { 
 
    window.alert('You must select at least one dish.'); 
 
    return dinner; 
 
    } else 
 
    return dinner; 
 
} 
 

 

 
// I am trying to calculate the price once they make a selection in checkboxes: 
 

 
//this function calculates the price: 
 
function sumOfCheckedBoxes() { 
 
    var total = 0; 
 
    var count = 0; 
 
    for (var i = 0; i < document.form[0].dinner.length; i++) { 
 
    if (document.form[0].dinner[i].checked) { 
 
     total = total + document.form[0].dinner[i].value * 1; 
 
     count++; 
 
    } 
 
    } 
 
    if (count == 1) { 
 
    alert("Your amount for the selcected dish is " + total); 
 
    } else if (count > 1) { 
 
    alert("The total of the " + count + "checkboxes you have checked is" + total); 
 
    } 
 
}

form { 
 
    background-color: #F4F4F4; 
 
    padding: 10px; 
 
    width: auto; 
 
} 
 
label { 
 
    float: left; 
 
    clear: left; 
 
    display: block; 
 
    width: 100px; 
 
    text-align: right; 
 
    padding-right: 10px; 
 
    margin-top: 10px; 
 
}

<form action="" onsubmit="return checkCheckboxes() && confirmSubmit()" onreset="return confirmReset();"> 
 
    <fieldset> 
 
    <legend>Menu order form</legend> 
 
    <table> 
 
     <caption> 
 
     <h3>Dinner Menu</h3> 
 
     </caption> 
 
     <thead> 
 
     <tr> 
 
      <th> 
 
      <label for="dish">Dish 
 
       <br> 
 
      </label> 
 
      </th> 
 
      <th> 
 
      <label for="quantity">Quantity</label> 
 
      </th> 
 
      <th> 
 
      <label for="picture">Picture</label> 
 
      </th> 
 
      <th> 
 
      <label for="price">Price</label> 
 
      </th> 
 
     </tr> 
 
     </thead> 
 
     <tbody> 
 
     <tr> 
 

 
      <td> 
 
      <label for="choose"> 
 
       <p><strong>Make a selection:</strong> 
 
       </p> 
 
      </label> 
 
      <br /> 
 
      <label for="steak"> 
 
       <input type="checkBox" id="tSteak" name="dinner" value="19.99" onsubmit="sumOfCheckedBoxes()" />Tuscan Steak</label> 
 
      </td> 
 
      <td> 
 
      <label for="quantity"> 
 
       Quantity 
 
       <br /> 
 
       <input type="text" name="steak" id="plate1" onblur="return checkForNumber(this.value);" /> 
 
      </label> 
 
      </td> 
 
      <td> 
 
      <label for="img"> 
 
       <img src="steak.jpg" alt="steak" id="steak"> 
 
       <br /> 
 
      </label> 
 
      <label for="comments"> 
 
       Comments: 
 
       <textarea name="cm" cols="20" rows="2">How would you like your steak cooked?</textarea> 
 
      </label> 
 
      </td> 
 
      <td> 
 
      <label for="price">$19.99</label> 
 
      </td> 
 
     </tr> 
 
     <tr> 
 
      <td> 
 
      <br /> 
 
      <label for="chicken"> 
 
       <input type="checkBox" id="tChicken" name="dinner" value="13.99" onsubmit="sumOfCheckedBoxes()" />Tuscan Chicken</label> 
 
      </td> 
 
      <td> 
 
      <label for="quantity">Quantity 
 
       <br /> 
 
       </quantity> 
 
       <input type="text" name="chicken" id="plate2" onblur="return checkForNumber(this.value);" /> 
 
      </td> 
 
      <td> 
 
      <img src="grilledchicken.jpg" alt="chicken" id="chicken"> 
 
      <br />Comments: 
 
      <textarea name="cm" cols="20" rows="2">Enter special instructions</textarea> 
 
      </td> 
 
      <td> 
 
      <label for="price">$13.99</label> 
 
      </td> 
 
     </tr> 
 
     <tr> 
 
      <td> 
 
      <br /> 
 
      <label for="pasta"> 
 
       <input type="checkBox" id="iPasta" name="dinner" value="12.99" onsubmit="sumOfCheckedBoxes()" />Sun Dried Pasta</label> 
 
      </td> 
 
      <td> 
 
      <label for="quantity"> 
 
       Quantity 
 
       <br /> 
 
       <input type="text" name="pasta" id="plate3" onblur="return checkForNumber(this.value);" /> 
 
      </label> 
 
      </td> 
 
      <td> 
 
      <img src="sundriedpasta.jpg" alt="pasta" id="pasta"> 
 
      <br />Comments: 
 
      <textarea name="cm" cols="20" rows="2">Enter special instructions</textarea> 
 
      </td> 
 
      <td> 
 
      <label for="price">$12.99</label> 
 
      </td> 
 
     </tr> 
 
     <tr> 
 
      <td> 
 
      <br /> 
 
      <label for="rigatonni"> 
 
       <input type="checkBox" id="iRigatonni" name="dinner" value="9.99" onsubmit="sumOfCheckedBoxes()" />Rigatonni</label> 
 
      </td> 
 
      <td> 
 
      <label for="quantity"> 
 
       Quantity 
 
       <br /> 
 
       <input type="text" name="rigatonni" id="plate4" onblur="return checkForNumber(this.value);" /> 
 
      </label> 
 
      </td> 
 
      <td> 
 
      <img src="rigatonni.jpg" alt="rigatonni" id="rigatonni"> 
 
      <br />Comments: 
 
      <textarea name="cm" cols="20" rows="2">Enter special instructions</textarea> 
 
      </td> 
 
      <td> 
 
      <label for="price">$15.99</label> 
 
      </td> 
 
     </tr> 
 
     <tr> 
 
      <td> 
 
      <br /> 
 
      <label for="ensalada"> 
 
       <input type="checkBox" id="iEnsalada" name="dinner" value="yes" onsubmit="sumOfCheckedBoxes()" />Italian Ensalada</label> 
 
      </td> 
 
      <td> 
 
      <label for="quantity">Quantity 
 
       <br /> 
 
       <input type="text" name="ensalada" id="plate5" onblur="return checkForNumber(this.value);" /> 
 
      </label> 
 
      </td> 
 
      <td> 
 
      <img src="ensalada.jpg" alt="ensalada" id="ensalada"> 
 
      <br />Comments: 
 
      <textarea name="cm" cols="20" rows="2">Enter special instructions</textarea> 
 
      </td> 
 
      <td> 
 
      <label for="price">$9.99</label> 
 
      </td> 
 

 
     </tr> 
 
     </tbody> 
 

 
    </table> 
 

 

 
    </fieldset> 
 
    <input type="submit" value="send my order!"> 
 
    <input type="reset"> 
 
</form> 
 

 

 

 
<div> 
 
    <fieldset> 
 
    <legend>Stay Connected!</legend> 
 

 
    <h3>Subscribe to our Newsletter!</h3> 
 
    e-mail: 
 
    <input type="text" name="email" id="email" required="required"> 
 
    <br /> 
 
    <input type="submit" value="sign me up!"> 
 
    <input type="reset"> 
 
    </fieldset> 
 
</div> 
 

 
<p> 
 
    <a href="http://jigsaw.w3.org/css-validator/check/referer"> 
 
    <img style="border:0;width:88px;height:31px" src="http://jigsaw.w3.org/css-validator/images/vcss" alt="Valid CSS!" /> 
 
    </a> 
 
</p>

Answer 1

的onsubmit不會對輸入下地幹活。您應該在輸入元素的form或onblur上提交支票。