Question

I am facing problem in getting the variables from my response string. My response is like this:

responseText = {'page':'2','endOfPage':'yes','content':'abc'}

alert(responseText.page);

is returning undefined,
can anyone suggest how to do it??

Answer 1

Your problem is that your responseText is in fact a string (responseText = "{'page':'2','endOfPage':'yes','content':'abc'}";). You first have to parse it to create an object, this fails though because you are using single quotes, which are not valid JSON – you’ll need to use double quotes for resolving the problem:

var json= "{ \"page\": 2, \"endOfPage\": \"yes\", \"content\": \"abc\" }";
var obj = JSON.parse(json);
alert(obj.page);

If you can’t change the JSON-generator implementation to return a response with double quotes, try to replace every single quote into a double quote like this:

var invalidJson = "{'page':'2','endOfPage':'yes','content':'abc'}";
validJson= invalidJson.replace(/\'/g, "\"");
var obj = JSON.parse(validJson);
alert(obj.page);