javascript - 如何在父函数中加入函数/监听器

Question

 How would I go about combining these scripts under one function/listener so that they do not interfere with one another.  The submit-button fadein/fadeout function should only fire if all inputs are valid or at least one input is invalid.

由于代码在为审查提交按钮触发淡入/淡出时立即生效，因此它们会在第一次触发任何基于单个输入值而不是考虑所有输入状态的监听器切换后中断.

 I am unsure of how to create a universal function that validates each input without using things such as 

$('#review-username')

我也不确定从哪里开始弄清楚如何将特定的验证效果应用于特定的输入(电子邮件、用户名和密码)。我在下面编写的每个脚本都可以独立运行，问题是当所有脚本都在同一页面上时，审阅提交按钮淡入/淡出效果会中断。

验证脚本 1

$('#review-username').on('input', function() {
           $('#review-username').addClass('review-invalid');     

        if (!/^[A-Za-z0-9]*$/g.test(this.value)) {       
          this.focus();
          return false; 
          this.setCustomValidity('Invalid Characters, Please Use Only AlphaNumeric Characters');
                $('#review-username').removeClass('review-valid'); 
           $('#review-username').addClass('review-invalid');        
        }

          if(this.value.length >= 5) {
            $('#review-submit-button').fadeIn(2250);   
        this.setCustomValidity('');
         $('#review-username').addClass('review-valid');
          $('#review-username').removeClass('review-invalid'); 
          $('#review-submit-button').removeClass('preventclick');
        }


     if(this.value.length < 5) {
$('#review-submit-button').fadeOut(1250);     
                $('#review-username').removeClass('review-valid'); 
           $('#review-username').addClass('review-invalid');
          $('#review-submit-button').addClass('preventclick');
        }


                  if(this.value.length > 16) {
                  $('#review-submit-button').fadeOut(1250);     
                $('#review-username').removeClass('review-valid'); 
           $('#review-username').addClass('review-invalid');
          $('#review-submit-button').addClass('preventclick');
        }

});

验证脚本 2

$('#review-jobtitle').on('keyup', function(k) {
    var val = $(this).val();
   if (val.match(/[^a-zA-Z\s]/g)) {
       $(this).val(val.replace(/[^a-zA-Z\s]/g, ''));
   }
});


$('#review-jobtitle').on('input', function() {   
          $('#review-jobtitle').addClass('review-valid');  
 $('#review-jobtitle').addClass('invalid');
     if (!/^[a-zA-Z\s]*$/g.test(this.value)) {
         $('#review-jobtitle').removeClass('review-invalid');
        $('#review-jobtitle').addClass('review-valid');
        }else{           

     if(this.value.length >= 3) {
$('#review-submit-button').fadeIn(2250);
  $('#review-jobtitle').removeClass('review-invalid');
 $('#review-jobtitle').addClass('review-valid');
            $('#review-submit-button').removeClass('preventclick');
          }else{
                    $('#review-jobtitle').removeClass('review-valid');
          $('#review-jobtitle').addClass('review-invalid');
          }
        }

     if(this.value.length < 3) {
$('#review-submit-button').fadeOut(1250);
                 $('#review-jobtitle').removeClass('review-valid');
 $('#review-jobtitle').addClass('review-invalid');
           $('#review-submit-button').addClass('preventclick');
        }else{
          $('#jreview-obtitle').removeClass('review-invalid');
 $('#review-jobtitle').addClass('review-valid');
        }

         if(this.value.length > 32) {
         $('#review-submit-button').fadeOut(1250);
                 $('#review-jobtitle').removeClass('review-valid');
 $('#review-jobtitle').addClass('review-invalid');
           $('#review-submit-button').addClass('preventclick');
        }
});

验证脚本 3

$('#review-email').on('input', function() {
  $('#review-email').addClass('review-invalid');     
     if(this.value.length >= 6) {

    var mailformat = /^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;  
if(this.value.match(mailformat))  

 {  
$('#review-submit-button').fadeIn(2250);
  $('#review-email').removeClass('review-invalid');
 $('#review-email').addClass('review-valid');

 $('#review-submit-button').removeClass('preventclick');

}else{
$('#review-submit-button').fadeOut(1250);
  $('#review-email').removeClass('review-valid');
 $('#review-email').addClass('review-invalid');

 $('#review-submit-button').addClass('preventclick');
}

        }

     if(this.value.length < 6) {
$('#review-submit-button').fadeOut(1250);
  $('#review-email').removeClass('review-valid');
 $('#review-email').addClass('invalid');

 $('#review-submit-button').addClass('preventclick');
        }
           if(this.value.length > 64) {
           $('#review-submit-button').fadeOut(1250);
  $('#review-email').removeClass('review-valid');
 $('#review-email').addClass('review-invalid');

 $('#review-submit-button').addClass('preventclick');
        }
});

Answer 1

您可以创建一个附加函数来确定提交按钮的状态，并从各个处理程序中调用它。

function determineButtonState(){
    var bothInputsAreValid = // logic for validation
    if(bothInputsAreValid) // handle case for valid inputs
    else // handle case for invalid inputs
}

$('#review-email').on('input', function() {
    ...
    determineButtonState()
})

总的来说，这是一个很好的方法。将常见的代码块重构为一个单一的、可重用的源代码。我不会清理您的所有代码并确切地告诉您需要做什么，但这种方法应该可以满足您的需求。