Replace \n with <br> in JSON string

Question

I have a function to grab text data as JSON, which then is stringified. I'm trying to display this data in a modal in my web application, however the string appears in the HTML like this:

{"body":"---\nbl_playout_user: BLplayout\n\n# Playout config values\nbl_playout_image_drive_mount: '\\Paparazzi\Images'\nbl_playout_image_path: 'I:'\nbl_playout_machine_role: Primary\nbl_playout_network_name: ABC1\nbl_playout_stand_alone_mode: 0\nbl_playout_run_mode: HD\nbl_playout_format: AJA\nbl_playout_resolution: 720P\nbl_playout_logo_override: ABC\nbl_playout_default_header: BottomLine\nbl_playout_sponsor_on: 15000\nbl_playout_sponsor_off: 60000\nbl_playout_media_ball_on: 15000\nbl_playout_media_ball_off: 15000\nbl_playout_page_engine_working_directory: '{{ bl_templates_root_dir }}\SC14_Templates'\nbl_playout_schema_file_path: '{{ bl_templates_root_dir }}\SC14_Templates\BLMaster.xsd'\nbl_playout_default_swatch_path: '{{ bl_templates_root_dir }}\SC14_Templates\003_BtmLn_deliverable_ele\still_ele\RDBL_GENERIC_SWATCH.png'\nbl_playout_default_logo_path: '{{ bl_templates_root_dir }}\SC14_Templates\003_BtmLn_deliverable_ele\still_ele\default_team_logo.png'\n"}

I would like the instances of \n to be replaced with a <br> so it shows up properly in the HTML, however my function doesn't seem to be doing the trick. Any ideas as to why? I'm very stumped.

var stringData = JSON.stringify(data);
stringData = stringData.replace(new RegExp('\r?\n','g'), '<br />');
return stringData;

Solution 1

based on comments and building on other answer..

var json = JSON.parse(stringData);
json.body = body = json.body.replace(/\n/g, "<br />");

// and then if you needed it in a string you can do this again
stringData = JSON.stringify(json);

Solution 2

Try this.

stringData = stringData.replace(new RegExp("\\\\n", "g"), "<br />");

or this

stringData = stringData.replace(/\\n/g, "<br />");

Comments

[Dave Cripps]

This is all you need: stringData = stringData.replace(/\\n/g, '<br />');

[Felix Kling]

The OP clarified their question. What you are proposing is not what they want. It would replace every occurrence of the character sequence \n, not line breaks.

[Admin]

@FelixKling: I'm actually unsure about that now. There's only a single key/value pair in the JSON, and the value of that pair is a string with escape sequences in it.

[Felix Kling]

@squint: yeah, the OP's new comment helps.

[Nick Carducci]

var doo = JSON.parse(JSON.stringify(pageText)); var extra = doo.replace(/(?:\r\n|\r|\n)/gm, "<br>"); this doesn't break any cross-origin rules for the browser and I guess now I will set it to the innerHtml of an element for jsPdf...