Question

我在使用java脚本验证申请表时遇到了很多问题。

我的代码现在的方式，它仍然允许我提交我的表单，即使有错误。我试图使用的方法是让每个函数在遇到错误时返回false，但它不起作用，我不确定为什么。

固定，谢谢！

"use strict"; 
var errMsg = "";
/*get variables from form and check rules*/
function validate(){
var result = true; 

result = validateDOB() && validatePostCode() && validateTextBox() && validateJobReferenceNumber();

if (errMsg != ""){ //only display message box if there is something to show
 alert(errMsg);
 }

return result;
}

function validateDOB(){
var dob = document.forms["regForm"]["dob"].value;
var age = getAge(dob);
// var error = document.getElementById("spandob");
var pattern =/^([0-9]{2})\/([0-9]{2})\/([0-9]{4})$/;
	if (dob == null || dob == "" || !pattern.test(dob) || age < 15 || age > 80) {
        errMsg += "Please enter a valid date of birth\n";
        return false;
    }
    else {
        return true;
    }
}

function getAge(dob) { /* find age from today's date minus entered DOB*/
    var today = new Date();
    var birthDate = new Date(dob);
    var age = today.getFullYear() - birthDate.getFullYear();
    var m = today.getMonth() - birthDate.getMonth();
    if (m < 0 || (m === 0 && today.getDate() < birthDate.getDate())) {
        age--;
    }
    return age;
}

function validatePostCode(){
	var postcode = document.forms["regForm"]["postcode"].value;
	var state = document.forms["regForm"]["state"].value; 
	var error = document.getElementById("spanPostcode");
	switch (state){
		case "VIC":
		if (postcode.charAt(0) !== 3 || postcode.charAt(0) !== 8){
			error.innerhtml = "Please enter a valid post code for VIC";
			return false;
		}
		break;
		case "NSW":
		if (postcode.charAt(0) !== 1 || postcode.charAt(0) !== 2){
			errMsg += "Please enter a valid post code for NSW"
			return false;
		}
		break;
		case "QLD":
		if (postcode.charAt(0) !== 4 || postcode.charAt(0) !== 9){
			errMsg += "Please enter a valid post code for QLD"
			return false;
		}
		break;
		case "NT":
		if (postcode.charAt(0) !== 0){
			errMsg += "Please enter a valid post code for NT"
			return false;
		}
		break;
		case "WA":
		if (postcode.charAt(0) !== 6){
			errMsg += "Please enter a valid post code for WA"
			return false;
		}
		break;
		case "SA":
		if (postcode.charAt(0) !== 5){
			errMsg += "Please enter a valid post code for SA"
			return false;
		}
		break;
		case "TAS":
		if (postcode.charAt(0) !== 7){
			errMsg += "Please enter a valid post code for TAS"
			return false;
		}
		break;
		case "ACT":
		if (postcode.charAt(0) !== 0) {
			errMsg += "Please enter a valid post code for ACT"
			return false;
		}
		break;
		default: 
		errMsg += "Please enter a valid post code";
		return false;
	}
	return true;
}

function validateTextBox(){
	var checkboxOtherSkills = document.getElementById("skills[]").getElementsByTagName("input"); 
	var textbox = document.forms["regForm"]["otherSkills"].value;

	if (checkboxOtherSkills[oSkills].checked){
		if (textbox.length < 1){
			errMsg +="'Other Skills' has been selected but not filled out.";
			return false;
		}
	} 
	return true;
}

function validateJobReferenceNumber(){
	var refnumb = document.getElementById("jobrefno");
	var pattern = (/([a-zA-Z0-9_-]){6}$/);

	if (!pattern.test(refnumb)){
		errMsg += "6 alphanumeric characters only"
		return false;
	}
	return true;
}

function init(){
	var regForm = document.getElementById("regForm");// get ref to the HTML element
	regForm.onsubmit = validate; 
}

window.onload = init;

<form id="regForm" method="post" action="http://mercury.ict.swin.edu.au/it000000/formtest.php" novalidate="novalidate">
    <fieldset><legend>Application:</legend>

    <!--Job Reference Number-->
    <p><label for="jobrefno">Job Reference Number</label>
    <input type="text" name="jobrefno" id="jobrefno" pattern="[a-zA-Z0-9]{6}" title="Must be 6 characters" required="required" /></p>
    <!--First Name-->
    <p><label for="firstName">First Name</label>
    <input type="text" name="firstName" id="firstName" pattern="[a-zA-Z]+${1,25}" maxlength="25" title="Max Length 25" required="required" /></p>
    <!--Last Name-->
    <p><label for="lastName">Last Name</label>
    <input type="text" name="lastName" id="lastName" pattern="[a-zA-Z ]+${1,25}" maxlength="25" title="Max Length 25" required="required" /></p>
    <!--Date of Birth-->
        <p><label for="dob">Date of Birth</label>
    <input type="text" name="dob" id="dob" required="required" placeholder="dd/mm/yyyy"/></p>
    <!--Gender-->
    <fieldset><legend>Gender</legend>
    <p><label>  <input type="radio" name="gender" value="Unspecified" checked="checked"/>Prefer not to say</label>
    <label><input type="radio" name="gender" value="Female" />Female</label>
    <label><input type="radio" name="gender" value="Male" />Male</label></p></fieldset> 
    <!--Street Address-->
    <p><label for="streetAddress">Street Address</label>
    <input type="text" name="streetAddress" id="streetAddress" maxlength="40" title="Max Length 40" required="required" /></p>
    <!--Suburb-->
    <p><label for="suburb">Suburb</label>
    <input type="text" name="suburb" id="suburb" maxlength="40" title="Max Length 40" required="required" /></p>
    <!--State-->    
    <p><label for="state">State</label>
    <select required ="required" name="state" id="state">
    <option value="" selected="selected">Please Select</option>
    <option value="VIC">VIC</option>
    <option value="NSW">NSW</option>
    <option value="QLD">QLD</option>
    <option value="NT">NT</option>
    <option value="WA">WA</option>
    <option value="SA">SA</option>
    <option value="TAS">TAS</option>
    <option value="ACT">ACT</option>
    </select>
    </p>
    <!--Postcode-->
    <p><label for="postcode">PostCode</label><span id="spanPostcode"></span>
    <input type="text" name="postcode" id="postcode" pattern="[0-9]{4}" maxlength="4" title="4 Digits only" required="required" />
    <!--Email address-->
    <p><label for="email">Email</label>
    <input type="email" name="email" id="email" placeholder="youremail@host.com" pattern="[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$" title="Please use correct format: eg. mrburns@hotmail.com" required="required" /></p>
    <!--Phone Number-->
    <p><label for="phoneNumber">Phone Number</label>
    <input type="text" name="phoneNumber" id="phoneNumber" pattern="[0-9]+{8,12}" maxlength = "12" title="8-12 Digits" required="required" />       
    </p>
    <!--Skill List-->
    <label>Skills List</label><br>
    <label><input type="checkbox" name="skills[]" value="HTML5" checked="checked" />HTML5</label><br>
    <label><input type="checkbox" name="skills[]" value="CSS" />CSS</label><br>
    <label><input type="checkbox" name="skills[]" value="JavaScript">JavaScript</label><br>
    <label><input type="checkbox" name="skills[]" value="Excel" />Excel</label><br>
    <label><input type="checkbox" name="skills[]" value="MySQL" />MySQL</label><br>
    <label><input type="checkbox" name="skills[]" value="Administration" />Administration</label><br>
    <label><input type="checkbox" name="skills[]" value="12MoExp" />12 Months Experience</label><br>
    <label><input type="checkbox" name="skills[]" id ="oSkills" value="OtherSkills" />Other Skills...</label><br>
    <!--Other Skills-->
    <p><label for="otherSkills">Other Skills</label><br>
    <textarea id="otherSkills" name="otherSkills" rows="10" cols="50" placeholder="Please tell us about any other skills you have that may benefit you in this position"></textarea></p>
    </fieldset>
    <p>
    <input type= "submit" value="Apply"/>
    <input type= "reset" value="Reset Form"/></p>
</form>

Answer 1

在验证函数中，在3次连续函数调用后，结果仍为true。结果应该取3个函数的返回值：

result = validateDOB() && validatePostCode() && validateTextBox();

另外，请确保在validatePostCode中返回一个布尔值

即使Javascript表单无效，也会提交

1 个答案: