build URL query part from a given JSON object

buildUrlQueryFromJson.js

function buildUrlQueryFromJson(data, opening_array, encode){
    let output = [];
	if(typeof encode === 'undefined') encode = false;
    if(typeof opening_array !== 'string') opening_array = '';
    let next_opening_array = '';

    if((typeof data === 'object' || Array.isArray(data)) && data !== null){
        for(var i in data){
            if(opening_array.length)
                next_opening_array = opening_array+'['+encodeURIComponent(i)+']';
            else
                next_opening_array = i;

            if((typeof data[i] === 'object' || Array.isArray(data[i])) && data[i] !== null){
                output.push(buildUrlQueryFromJson(data[i], next_opening_array));
            }
            else if(data[i] !== null){
                if(opening_array.length)
                    output.push(opening_array+'['+i+']'+'='+encodeURIComponent(data[i]));
                else
                    output.push(i+'='+encodeURIComponent(data[i]));
            }
        }
    }
    return encode ? encodeURI(output.join('&')) : output.join('&');
}

tests.js

let testJson = {
	order: {
		0: {
			column: 1
		}
	},
	a: 'b',
	c: 10
};

console.log(buildUrlQueryFromJson(testJson, ''));

console.log(buildUrlQueryFromJson(testJson, '', true));