单击鼠标，然后输入按钮(SUBMIT FORM with mouse clicking and enter button)

 我通过MOUSE CLICK和ENTER提交表格。 
 
 Ajax Call正在检查是否有我已经在DATABASE中的任何指定..如果没有，用户可以提交表单否则SUBMIT按钮将DISABLE 
 
 JQUERY 
 
function check_designation(e){

    text = $('#req1').val();
    data = "data=" + text;          
    text_length = text.length           

    if(text_length == 0)
    {
        $('#result_span').html('');
    }       

    if(text_length > 3 ){
        $.ajax({
            url: "designation_ajax.php",
            type: "POST",
            data: data,    
            cache: false,
            success: function (response) {
                if ($.trim(response) == "access") { 
                    $("#result_span").html('<div class="green">' + text + ' is available '+'</div>');
                    $('#create_desg').removeAttr('disabled');
                }
                else if ($.trim(response) == "no access") {                                                         
                    $("#result_span").html('<div class="red">' + text + ' is already in use'+'</div>'); 
                    $('#create_desg').attr('disabled','disabled');                                                      
                }

                else { 

                    alert('Sorry, unexpected error. Please try again later.');

                }
            }      
        }); 
    }
    else{
        $("#result_span").html('');     

    }

    return true;        
}
 
 HTML表格 
 
<form id="formID" class="formular" method="POST" action="" onsubmit="formSubmit()" >
  <fieldset>
    <legend>Create Desination</legend>
    <label> Designation<br clear="all" />
      <input autocomplete="off" onkeyup="check_designation(event)" value="" class="validate[required,minSize[4]] text-input float_left" type="text" name="name" id="req1" />
      <span id="result_span"></span>
    </label>
    <br clear="all" />
    <input id="create_desg" value="Submit" type="button" />
  </fieldset>
</form>
 
 问题：：：： 
 
 现在发生的事情DISABLE按钮不是解决方案...如果表中已有DESIGNATION ..提交按钮将禁用但是按ENTER将提交，我不想重新加载页面。 当我按下ENTER时，AJAX不起作用 

I am Submiting form through MOUSE CLICK and ENTER too.
 
Ajax Call is checking is there any designation which i already in DATABASE.. If not, user can submit form otherwise SUBMIT button will DISABLE
 
JQUERY
 
function check_designation(e){

    text = $('#req1').val();
    data = "data=" + text;          
    text_length = text.length           

    if(text_length == 0)
    {
        $('#result_span').html('');
    }       

    if(text_length > 3 ){
        $.ajax({
            url: "designation_ajax.php",
            type: "POST",
            data: data,    
            cache: false,
            success: function (response) {
                if ($.trim(response) == "access") { 
                    $("#result_span").html('<div class="green">' + text + ' is available '+'</div>');
                    $('#create_desg').removeAttr('disabled');
                }
                else if ($.trim(response) == "no access") {                                                         
                    $("#result_span").html('<div class="red">' + text + ' is already in use'+'</div>'); 
                    $('#create_desg').attr('disabled','disabled');                                                      
                }

                else { 

                    alert('Sorry, unexpected error. Please try again later.');

                }
            }      
        }); 
    }
    else{
        $("#result_span").html('');     

    }

    return true;        
}
 
HTML FORM
 
<form id="formID" class="formular" method="POST" action="" onsubmit="formSubmit()" >
  <fieldset>
    <legend>Create Desination</legend>
    <label> Designation<br clear="all" />
      <input autocomplete="off" onkeyup="check_designation(event)" value="" class="validate[required,minSize[4]] text-input float_left" type="text" name="name" id="req1" />
      <span id="result_span"></span>
    </label>
    <br clear="all" />
    <input id="create_desg" value="Submit" type="button" />
  </fieldset>
</form>
 
PROBLEM::::
 
Now what happen DISABLE button is not a solution... if there is already a DESIGNATION in a table.. submit button will disable but By ENTER it will submitted and i dont want to reload the page. and AJAX is not working when i PRESS ENTER

原文：https://stackoverflow.com/questions/10145152