Question

106

how to write json files in javascript

rated 0 times [ 107] [ 1] / answers: 1 / hits: 25497 / 11 Years ago, mon, june 10, 2013, 12:00:00

Ok, so I am programming a web operating system using js. I am using JSON for the file system. I have looking online for tutorials on JSON stuff for about a week now, but I cannot find anything on writing JSON files from a web page. I need to create new objects in the file, not change existing ones. Here is my code so far:

{/: {

            Users/: {

                Guest/: {

                    bla.txt: {

                        content: 

                            This is a test text file

                    }



                },

                Admin/: {

                    html.html: {

                        content: 

                            yo



                    } 

                }

            },

            bin/: {

                ls: {

                        man: Lists the contents of a directory a files<br/>Usage: ls

                },

                cd: {

                    man: Changes your directory<br/>Usage: cd <directory>

                },

                fun: {

                    man: outputs a word an amount of times<br/>Usage: fun <word> <times>

                },

                help: {

                    man: shows a list of commands<br/>Usage: help

                },

                clear: {

                    man: Clears the terminal<br/>Usage: clear

                },

                cat: {

                    man: prints content of a file<br/>Usage: cat <filename>

                }

            },

            usr/: {

                bin/: {



                }, 

                dev/: {



                }   

            }

        }}

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jaliyahcynthiac

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4 Years ago

answered 11 Years ago clarkulisesa · Accepted Answer

I think the better solution is to stringify your JSON, encode with base64 encoding and then send it to a server-side script (a PHP page, for instance) which could save this file. See:

var json = JSON.stringify(myJson);

var encoded = btoa(json);

You can use ajax for sending:

var xhr = new XMLHttpRequest();

xhr.open('POST','myServerPage.php',true);

xhr.setRequestHeader('Content-type','application/x-www-form-urlencoded');

xhr.send('json=' + encoded);

And in the server-side:

$decoded = base64_decode($_POST['json'])

$jsonFile = fopen('myJson.json','w+');

fwrite($jsonFile,$decoded);

fclose($jsonFile);