找出是否所有图像上课

Question

HTML：

<div class="regform"><input id="username" type="text" name="username" placeholder="Username" required><h3 class="check"><img src=''/></h3></div> 
<div class="regform"><input id="password" type="password" name="password" placeholder="Password" required><h3 class="check"><img src=''/></h3></div> 
<div class="regform"><input id="password2" type="password" name="password2" placeholder="Re password" required><h3 class="check"><img src=''/></h3></div> 
<div class="regform"><input id="email" type="text" name="email" placeholder="E-mail" required><h3 class="check"><img src=''/></h3></div> 

JS：

 $('#send').click(function(){ 
    var classs = $(".check").find('img'); 
    if(classs.hasClass("yes")){ 
     alert("Everything is correct"); 
    }else{ 
     alert("Something is wrong"); 
    } 

}); 

我要检查，如果所有 “检查” 图像有类 “是”。

Answer 1

var dotheyallhavetheclass = $('.check img:not(.yes)').length===0; 

Answer 2

.......或.............

var dotheyallhaveyesclass = (($('img.check').length == $('img.yes').length)) ? 1 : 0); 

Answer 3

这是纯的Javascript溶液：下面演示：http://jsbin.com/ucoPEBEv/1/

e = document.getElementsByClassName('check'); 
error = false; 
for (j = 0; j < e.length; j++){ 
    imgs = e[j].getElementsByTagName('img');  
     for (i = 0; i < imgs.length; i++){ 
      if (imgs[i].className != 'yes'){ 
      error = true; 
      break; 
      } 
     } 
    } 
if (error){ 
     alert('Some Thing Wrong'); 
    } 
else{ 
     alert('Every Thing Well!'); 
    }