How to minify json response?

Question

Hi recently in one of the interview i gone through this question.

How to minify json response

    {
name: "sample name",
product: "sample product",
address: "sample address"

}

this what the question. I dont know how to minify and the process behind it. Can any one explain? please

Thanks in Advance.

Answer 1

You can parse the JSON and then immediately re-serialize the parsed object:

var myJson = `{
    "name": "sample name",
    "product": "sample product",
    "address": "sample address" 
}`;

// 'Minifying' the JSON string is most easily achieved using the built-in
// functions in the JSON namespace:
var minified = JSON.stringify(JSON.parse(myJson));

document.body.innerHTML = 'Result:<br>' + minified;

You'll have to perform the minification server-side to get an improvement in response size. I suppose most languages support an equivalent to the above snippet. For example, in php one might write this (if your server runs php, of course):

$myJson = '{
    "name": "sample name",
    "product": "sample product",
    "address": "sample address" 
}';

$minified = json_encode(json_decode($myJson));

Answer 2

The obvious way would be to strip the whitespace. Beside that you could also map the keys to something shorter like a, b, c.

Also if you want to be a jerk about it; you could tell them that valid json would have quotes around the keys. This seems to be a js object, not json.