jQuery AJAX捕获状态代码错误

我试图使用jQuery的$ .ajax捕获特定的响应错误.

当存在500或404错误代码时,它运行错误函数而不是运行状态代码函数,我得到一个警告框,而不是应该发生的事情

这是我的代码的样子

// get page data
getPageData: function(url, callback) {

    url = ajaxLoader.getURL(url);

    $.ajax({
        url: url,
        type: 'get',
        data: {_ajax_loader: 1},
        error: function(xhr, status) {
            alert('There was a problem loading that page. You may need to refresh.');
        },
        statusCode: {
                404: function(response) {
                    ajaxLoader.fetchPage('/missing');
                },
                500: function(response) {
                    ajaxLoader.fetchPage('/error'); 
                }
            }           
    }).done(callback);
},

Adam Azad.. 5

这是设计的.error在服务器返回错误时执行.此外,定义的函数statusCode也被称为.这同样适用于complete和success处理程序.

您可以修改错误处理程序,以便在已定义错误代码时不运行statusCode.

$.ajax({
    url: '/echo',
    type: 'get',
    success: function() {
        console.log('ajax.success');
    },
    error: function(xhr, status) {
        // check if xhr.status is defined in $.ajax.statusCode
        // if true, return false to stop this function
        if (typeof this.statusCode[xhr.status] != 'undefined') {
            return false;
        }
        // else continue
        console.log('ajax.error');
    },
    statusCode: {
        404: function(response) {
            console.log('ajax.statusCode: 404');
        },
        500: function(response) {
            console.log('ajax.statusCode: 500');
        }
    }
});

演示

这是设计的.error在服务器返回错误时执行.此外,定义的函数statusCode也被称为.这同样适用于complete和success处理程序.

您可以修改错误处理程序,以便在已定义错误代码时不运行statusCode.

$.ajax({
    url: '/echo',
    type: 'get',
    success: function() {
        console.log('ajax.success');
    },
    error: function(xhr, status) {
        // check if xhr.status is defined in $.ajax.statusCode
        // if true, return false to stop this function
        if (typeof this.statusCode[xhr.status] != 'undefined') {
            return false;
        }
        // else continue
        console.log('ajax.error');
    },
    statusCode: {
        404: function(response) {
            console.log('ajax.statusCode: 404');
        },
        500: function(response) {
            console.log('ajax.statusCode: 500');
        }
    }
});

演示