$(function()
    {
        $.ajax(
        {
            url:location.href,
            dataType:‘json‘,
            type:‘post‘,
            data:{action:‘_yundanran-all-cat‘},
            beforeSend:function()
            {
                console.log(‘beforeSend‘);
            },
            success:function()
            {
                console.log(‘success‘);
            },
            error:function()
            {
                console.log(‘error‘);
            },
            complete:function()
            {
                console.log(‘complete‘);
            }
        });
    });