Question

在“使用Node.js和Express进行Web开发”一书中，有以下代码段：

app.post('/process', function(req, res){
if(req.xhr || req.accepts('json,html')==='json'){
        // if there were an error, we would send { error: 'error description' }
res.send({ success: true }); 
}else{
        // if there were an error, we would redirect to an error page
        res.redirect(303, '/thank-you');
    }
});

在else块中，我们可以执行以下操作：

    console.log('Form (from querystring): ' + req.query.form);
    console.log('CSRF token (fconsolerom hidden form field): ' + req.body._csrf);
    console.log('Name (from visible form field): ' + req.body.name); 
    console.log('Email (from visible form field): ' + req.body.email);

我们会得到价值观。但是如果我们在if块中放入相同的块，则值都是'undefined'（因为它是ajax请求）。那么当它是ajax请求时我们如何读取请求参数呢？

编辑：我正在使用，表达和“Body Parser”

编辑：我用于制作ajax请求的jQuery代码：

<script>
    $(document).ready(function(){ 
        $('.signupform').on('submit', function(evt){
            evt.preventDefault();
            var action = $(this).attr('action');
            var $container = $(this).closest('.formContainer'); $.ajax({
                url: action,
                type: 'POST',
                success: function(data){
                    if(data.success){ $container.html('<h2>Thank you!</h2>');
                }else{
                    $container.html('There was a problem.');
                } 
            },
                error: function(){
                    $container.html('There was a problem.');
                }
            });
        }); 
    });
</script>

如何在ajax请求中获取查询参数？

0 个答案: