jquery，将文本添加到特定标签的<small>标记中

Question

having some issue in getting text append into specific label

here is my html code

<label for="password">
    Password <small>required</small>
    <input type="password" name="password" placeholder="Enter password" required pattern="[a-zA-Z]+"/>
    <small class="error">Password is required</small>
    <small class="server-error"></small>
</label>

now when my server validation return as false with the msg, i would like to append that message into the <small class="server-error"></small>

here is my ajax part

$.post('./login.php', $(this).serialize(), function(msg){
    //  working = false;
    //  $('#submit').val('Login');
    if(msg.status){
        window.location.href = "testt.php";
    }
    else {
        $.each(msg.errors,function(k,v){
            /// NOT SURE WHAT TO HAVE HERE TO GET THE SPECIFIC LABEL 
        });
        //$('#testForm').html("fail");
    }
}, 'json');

Answer 1

 $.each(msg.errors,function(k,v){
           $("label[for=" + k +"]").find(".server-error").append("<br>" + v);
        });    

This code will show error of columns in their respective error div.