Decoding JSON containing special characters

Currently, I am utilizing flot for graphing purposes and facing difficulties when trying to pass the tickSize along with my JSON data. In this scenario, I am utilizing MVC to transmit the JSON within a model. Below is an excerpt of code demonstrating how I extract the JSON in my JavaScript function:

var json = '<%=Model.Json %>';
var data = jQuery.parseJSON(json);

This is an example of how the JSON appears upon leaving the controller:

{\"GraphData\":[{\"X\":1333929600000,\"Y\":0.0},{\"X\":1333670400000,\"Y\":0.46}],\"Max\":1333324800000,\"Min\":1333929600000,\"TickSize\":\"[1, 'day']\"}

The issue lies specifically with the "TickSize" component. It seems that the square brackets around "[1, 'day']" are causing some parsing challenges since typically, [] implies an array. However, Flot requires the tick size to be in that particular format. How should I structure my JSON so that I can properly access the TickSize value?

javascriptjsonmodel-view-controllerflot

Answer №1

The problem arises from the single quotes within the string value, as you are attempting to enclose the JSON string with them as well. This leads to a JavaScript code snippet like this (truncated):

var json = '...,\"TickSize\":\"[1, 'day']\"}';

Due to the presence of four single quotes now, the word day is not considered part of the string and results in a syntax error.

However, there should be no need to quote and parse the JSON since it follows JavaScript syntax:

var data = <%= Model.Json %>;

If you require the string representation, you can either stringify it in JavaScript:

var json = JSON.stringify(data):

Alternatively, escape single quotes server-side within the string:

var json = '<%= Model.Json.Replace("'", "\\'") %>';

Answer №2

The reason for the issue is that you enclosed the string within single quotes ' instead of double quotes ". This causes the string to end prematurely at the first single quote.

To resolve this, modify your initial line as below:

var json = "<%=Model.Json %>";

Answer №3

Resolution: In order to depict the single backslash '\', simply replace it with a double '\\' backslash.
For representing a Newline character as '\n', utilize '\\n' instead.
This method also functions effectively for Tooltip messages.

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