create and modify xml file using javascript (want to save xml file on client side)

Question

Hi ,

How to save xml file on client side using javascript...?

        if (window.XMLHttpRequest) {
            xhttp = new XMLHttpRequest();
        }
        else // Internet Explorer 5/6
        {
            xhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        xhttp.open("GET", "User.xml", false);
        xhttp.send("");
        xmlDoc = xhttp.responseXML;

        xmlDoc.getElementsByTagName("Username")[0].childNodes[0].nodeValue = 'asdasf';
        xmlDoc.getElementsByTagName("password")[0].childNodes[0].nodeValue = 'asdAS';
        xmlDoc.getElementsByTagName("UserId")[0].childNodes[0].nodeValue = '12';
        xmlDoc.save("User.xml");

this is not working.. showing error as save is not a function.

Thanks Suneetha.

Answer 1

You can't save a file on the client side, you won't have the access rights

Answer 2

you should save a file using a server side language to save locally to your server, you are not allowed to save on the client side.

Answer 3

This is not allowed in JavaScript. This will be a security vulnerability.

Read JavaScript security

JavaScript and the DOM provide the potential for malicious authors to deliver scripts to run on a client computer via the web. Browser authors contain this risk using two restrictions. First, scripts run in a sandbox in which they can only perform web-related actions, not general-purpose programming tasks like creating files. Second, scripts are constrained by the same origin policy: scripts from one web site do not have access to information such as usernames, passwords, or cookies sent to another site. Most JavaScript-related security bugs are breaches of either the same origin policy or the sandbox.

Answer 4

If your target browser has localStorage, you can use that to save data on the client side.

Check quirksmode for compatibility, which at this point in time is pretty limited.