jquery - javascript function return data - Stack Overflow

admin管理员组

文章数量:1310012

I have a function like this that does an ajax call to grab some data from a database.

    function db (content) {
        $.post('/ajax/db.php', { 
           operation:operation,
           content:content
        }, function(data)
        {
            console.log(data);
            return data;
        });
    }

console.log(data); gives me the data that I want.

However how do I pass data to function db so that I can do something like:

var returnedData = db ('content');

Thanks!

I have a function like this that does an ajax call to grab some data from a database.

    function db (content) {
        $.post('/ajax/db.php', { 
           operation:operation,
           content:content
        }, function(data)
        {
            console.log(data);
            return data;
        });
    }

console.log(data); gives me the data that I want.

However how do I pass data to function db so that I can do something like:

var returnedData = db ('content');

Thanks!

• javascript
• jquery
• function

Share Improve this question Follow asked Sep 25, 2010 at 18:03 MarkMark 33.7k3434 gold badges108108 silver badges139139 bronze badges

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 9

AJAX Operations are asynchronous so returning it directly isn't an option, not unless you make it synchronous (which locks up the browser). Instead, you should pass the data onto the next function in the callback, like this:

function db (content) {
    $.post('/ajax/db.php', { 
       operation:operation,
       content:content
    }, function(data)
    {   
        nextFunction(data);
    });
}

Or make it take a callback so you can pass the function that will get the data, when it's ready, like this:

function db (content, callback) {
    $.post('/ajax/db.php', { 
       operation:operation,
       content:content
    }, callback);
}

Then call it providing the callback function, for example:

db('content', function(data) { 
  //do something with data
});

本文标签： jqueryjavascript function return dataStack Overflow