我如何使用Codeigniter 3和jquery 1.12.4修复函数中的错误

Question

我使用jquery-1.12.4创建了一个tabs函数，该tabs成功执行，但是$（...）中始终存在错误。 datepickers不是函数，有时也是$（...）。制表符不是功能。我真的很困惑，错误总是导致这些功能之一。如何解决？

$（document）.ready（function（）{

$('select[name="farea_id"]').change(function(){
    var url = window.location.href;    
    url = url.substring(0, (url.indexOf("index.php") == -1) ? url.length : url.indexOf("index.php"));
    var sendto = url+"index.php/ajax/get_i_fprovince/" + jQuery(this).val();
    $("#i_fprovince").load(encodeURI(sendto));
}); 

$('#i_fprovince').change(function(){
    var url = window.location.href;    
    url = url.substring(0, (url.indexOf("index.php") == -1) ? url.length : url.indexOf("index.php"));
    var sendto = url+"index.php/ajax/get_i_fcity_id/" + jQuery('select[name="fprovince_id"]').val();
    $("#i_fcity").load(encodeURI(sendto));
});

$('select[name="region"]').change(function(){
    var url = window.location.href;    
    url = url.substring(0, (url.indexOf("index.php") == -1) ? url.length : url.indexOf("index.php"));
    var sendto = url+"index.php/ajax/get_region/" + jQuery(this).val();
    $("#i_region_parent").load(encodeURI(sendto));
}); 

$('select[name="cust_id"]').change(function(){ 
    var url = window.location.href;    
    url = url.substring(0, (url.indexOf("index.php") == -1) ? url.length : url.indexOf("index.php"));
    var sendto = url+"index.php/ajax/get_i_initial_cust/" + jQuery(this).val();
    $("#fproject_initial").load(encodeURI(sendto));
});

$('.delete').click(function(){
    var answer = confirm('Are you sure to delete "'+jQuery(this).attr('title')+'" ?');
    return answer; 
}); 

$( function() {
    $( ".datepicker" ).datepicker({dateFormat: 'dd/mm/yy'});
    $( ".datepicker" ).datepicker( "option", "dateFormat", "dd/mm/yy" );
    $( ".datepicker" ).datepicker( "option", "altFormat", "dd/mm/yy" );
    $( ".datepicker" ).datepicker( "option", "showButtonPanel", true );
    $( ".datepicker" ).datepicker( "option", "currentText", "Today" );
    $( ".datepicker" ).datepicker( "option", "showOn", "both" );

    $( "#tasktab" ).tabs({
        beforeLoad: function( event, ui ) {
            ui.jqXHR.fail(function() {
                ui.panel.html(
                    "Couldn't load this tab. We'll try to fix this as soon as possible." 
                );
            });
        }
    });

    $( "#oprtab" ).tabs({
        beforeLoad: function( event, ui ) {
            ui.jqXHR.fail(function() {
                ui.panel.html(
                    "Couldn't load this tab. We'll try to fix this as soon as possible." 
                );
            });
        }
    });

} );

$(".addintab").click(function() {
    $("#tasktab_content").load(encodeURI(jQuery(this).attr('href'))); 
    return false;
});

$(".cancelintab").click(function() {
    var sendto = jQuery(this).attr('sendto');
    var subm = jQuery(this).attr('subm');
    $("#tasktab_content").load(encodeURI(sendto)); 
    return false;
});

$('.deleteintab').click(function(){
    var answer = confirm('Are you sure to delete "'+jQuery(this).attr('title')+'" ?');
    if(answer) $("#tasktab_content").load(encodeURI(jQuery(this).attr('href'))); 
    return false; 
}); 

}）;