游标永远不会进入$ .ajax

Question

我试图在点击按钮时设置php变量，这是一些输入模式，如addentry，editentry，经过大量研究后我发现jquery ajax是在click函数上设置php变量的方法。但是在调试模式下我看到的是光标永远不会进入$ .ajax它只是跳过它

插件

<!-- jQuery -->

<!-- jQuery-ui -->
<script src="//code.jquery.com/ui/1.12.1/jquery-ui.js"></script>

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.7/jquery.js"></script> 
<script src="http://malsup.github.com/jquery.form.js"></script>

html内容

    <div class = "container">
    <div class = "acdetail">
        <form action = ""  method = "POST"  enctype = "multipart/form-data" class = "frmac" >
            <input type="text" name="acname" id="acname" class="form-control" onfocus = 'SetColor(this.id)'  onblur = 'ReleaseColor(this.id)'></br></br>
            <input type="text" name ="acopen" id="acopen" class="form-control" onfocus = 'SetColor(this.id)'  onblur = 'ReleaseColor(this.id)'></br></br>
            <select name="crdr" id = "crdr" class="form-control" onfocus = 'SetColor(this.id)'  onblur = 'ReleaseColor(this.id)'>
                <option value = "D">Debit</option>
                <option value = "C">Credit</option>
            </select></br></br>
            <select name="yn" id = "yn" class="form-control"  onfocus = 'SetColor(this.id)'  onblur = 'ReleaseColor(this.id)'>
                <option value = "Y">Yes</option>
                <option value = "N">No</option>
            </select></br></br>
            <button type="button" name="addentry" value="add" id="add" class="btn btn-info" onclick = 'BtnControl(this.id,"acname")'>Add</button>
            <input type="submit" name="saveentry" value="Save" id="save" class="btn btn-info" onclick = 'BtnControl(this.id)'>
            <button type="button" name="editentry" value="edit" id="edit" class="btn btn-info" onclick = 'BtnControl(this.id,"acname")'>edit</button>
            <button type="button" name="cancel" value="cancel" id="cancel" class="btn btn-info" onclick = "ClearControl('acdetail');BtnControl(this.id);">Cancel</button>
            <input type="submit" name="deleteentry" value="delete" id="delete" class="btn btn-info" onclick = 'BtnControl(this.id)'>
        </form>
    </div>
</div>

jquery函数是

    //Button enable disable
function BtnControl(idname,setfocus = ""){
    var curclass;
    switch(idname){
        case 'load':
        case 'cancel':
        case 'delete':
            $("#add").attr('disabled',false)
            $("#save").attr('disabled',true)
            $("#edit").attr('disabled',false)
            $("#cancel").attr('disabled',false)
            $("#delete").attr('disabled',true)
            $("#add").focus();
            break;
        case 'add':
            $("#add").attr('disabled',true)
            $("#save").attr('disabled',false)
            $("#edit").attr('disabled',true)
            $("#cancel").attr('disabled',false)
            $("#delete").attr('disabled',true)
            document.getElementById(setfocus).focus();
            var curclass = 'add'
            break;
        case 'save':
            $("#add").attr('disabled',true)
            $("#save").attr('disabled',false)
            $("#edit").attr('disabled',true)
            $("#cancel").attr('disabled',false)
            $("#delete").attr('disabled',true)
            $("#add").focus();
            break;
        case 'edit':
            $("#add").attr('disabled',true)
            $("#save").attr('disabled',false)
            $("#edit").attr('disabled',true)
            $("#cancel").attr('disabled',false)
            $("#delete").attr('disabled',false)
            document.getElementById(setfocus).focus();
            var curclass = 'edit'
            break;
    }

    $.ajax({
        type: 'POST',
        url : 'entrymode.php',
        data: 'flag='+curclass,
        datatype: 'text',
        success: function(msg){
            $('#m').html(msg)
        }
    })
}

url php页面是

   <?php
    global $entrymode;
    global $addentry;
    global $editentry;
    global $viewentry;
    global $deleteentry ;
    global $flag ;
    echo '(manoj)';
    switch($flag){
        case 'add':
            $entrymode = $addentry;
            break;
        case 'edit':
            $entrymode = $editentry;
            break;
        case 'delete':
            $entrymode = $deleteentry;
            break;
    }
?>