/*JSON Comparator Write a program that takes two strings in JSON format and compares them. The program should output the difference between those JSON strings. For example: Input: {"a": 2, "b": 3} {"a": 2, "b": 4} Output: "b": 3 "b": 4 Input: {"a": "hello", "b": {"c": 3}} {"a": "hello", "b": {"c": 11}} Output: "b": {"c": 3} "b": {"c": 11} */ function dumpObj(obj, n, obj2){ var txt = ""; if (n === undefined ) n = 0; var tab = ""; if (n) tab += " ".repeat(n*2); for (var key in obj) { var valType = typeof obj[key]; var mark = false; if (obj2) { //txt += "="+typeof obj2[key] + "=="; txt += valType +"="; if (typeof obj2[key] != valType) mark = true; } if (!mark && obj2 && valType != "object") mark = obj2[key] != obj[key]; if (mark) txt += ""; switch (valType) { case "string" : txt += tab + key + ': "' + obj[key] +'"
'; break; case "number" : txt += tab + key + ': ' + obj[key] +'
'; break; case "object" : txt += tab + key + ': {
'; if (mark || !obj2) txt += dumpObj (obj[key], n+1); else txt += dumpObj (obj[key], n+1, obj2[key]); txt += tab + '}
'; break; default : log.innerHTML += tab + key + ": " + valType +"
"; } if (mark) txt += ""; } return txt; } function test() { var j1, j2; try { j1 =JSON.parse(json1.innerHTML); } catch { js1.innerHTML = "JSON error" ; } try { j2 =JSON.parse(json2.innerHTML); } catch { js2.innerHTML = "JSON error" ; } if (j1) js1.innerHTML = "

"+dumpObj(j1,0,j2)+"

"; if(j2) js2.innerHTML = "

"+dumpObj(j2,0,j1)+"

"; } function ask(t){ var res = prompt("Enter JSON string", t.innerHTML); if (res === null) return; t.innerHTML = res; test(); }