console.log(obj)

var obj = {prop1: 'prop1Value', prop2: 'prop2Value', child: {childProp1: 'childProp1Value'}}
console.log(obj)

console.log('My object : ' + obj)

str = JSON.stringify(obj);
str = JSON.stringify(obj, null, 4); // (Optional) beautiful indented output.
console.log(str); // Logs output to dev tools console.
alert(str); // Displays output using window.alert()

obj = JSON.parse(str); // Reverses above operation (Just in case if needed.)

"Uncaught TypeError: Converting circular structure to JSON"

var output = '';
for (var property in object) {
  output += property + ': ' + object[property]+'; ';
}
alert(output);

console.log(JSON.stringify(obj))

var print = function(o){
    var str='';

    for(var p in o){
        if(typeof o[p] == 'string'){
            str+= p + ': ' + o[p]+'; </br>';
        }else{
            str+= p + ': { </br>' + print(o[p]) + '}';
        }
    }

    return str;
}

var myObject = {
    name: 'Wilson Page',
    contact: {
        email: 'wilson@hotmail.com',
        tel: '123456789'
    }
}

$('body').append( print(myObject) );

console.table(obj);

console.table(obj, ['firstName', 'lastName']);

var getPrintObject=function(object)
{
    return JSON.stringify(object);
}

console.log('print object: ' + JSON.stringify(session));

console.dir(object, {depth: null, colors: true})

// Recursive print of object
var print = function( o, maxLevel, level ) {
    if ( typeof level == "undefined" ) {
        level = 0;
    }
    if ( typeof level == "undefined" ) {
        maxLevel = 0;
    }

    var str = '';
    // Remove this if you don't want the pre tag, but make sure to remove
    // the close pre tag on the bottom as well
    if ( level == 0 ) {
        str = '<pre>';
    }

    var levelStr = '';
    for ( var x = 0; x < level; x++ ) {
        levelStr += '    ';
    }

    if ( maxLevel != 0 && level >= maxLevel ) {
        str += levelStr + '...</br>';
        return str;
    }

    for ( var p in o ) {
        if ( typeof o[p] == 'string' ) {
            str += levelStr +
                p + ': ' + o[p] + ' </br>';
        } else {
            str += levelStr +
                p + ': { </br>' + print( o[p], maxLevel, level + 1 ) + levelStr + '}</br>';
        }
    }

    // Remove this if you don't want the pre tag, but make sure to remove
    // the open pre tag on the top as well
    if ( level == 0 ) {
        str += '</pre>';
    }
    return str;
};

var pagewilsObject = {
    name: 'Wilson Page',
    contact: {
        email: 'wilson@hotmail.com',
        tel: '123456789'
    }
}

// Recursive of whole object
$('body').append( print(pagewilsObject) );

// Recursive of myObject up to 1 level, will only show name
// and that there is a contact object
$('body').append( print(pagewilsObject, 1) );

function ObjToSource(o){
    if (!o) return 'null';
    var k="",na=typeof(o.length)=="undefined"?1:0,str="";
    for(var p in o){
        if (na) k = "'"+p+ "':";
        if (typeof o[p] == "string") str += k + "'" + o[p]+"',";
        else if (typeof o[p] == "object") str += k + ObjToSource(o[p])+",";
        else str += k + o[p] + ",";
    }
    if (na) return "{"+str.slice(0,-1)+"}";
    else return "["+str.slice(0,-1)+"]";
}

const ObjToSource=(o)=> {
    if (!o) return null;
    let str="",na=0,k,p;
    if (typeof(o) == "object") {
        if (!ObjToSource.check) ObjToSource.check = new Array();
        for (k=ObjToSource.check.length;na<k;na++) if (ObjToSource.check[na]==o) return '{}';
        ObjToSource.check.push(o);
    }
    k="",na=typeof(o.length)=="undefined"?1:0;
    for(p in o){
        if (na) k = "'"+p+"':";
        if (typeof o[p] == "string") str += k+"'"+o[p]+"',";
        else if (typeof o[p] == "object") str += k+ObjToSource(o[p])+",";
        else str += k+o[p]+",";
    }
    if (typeof(o) == "object") ObjToSource.check.pop();
    if (na) return "{"+str.slice(0,-1)+"}";
    else return "["+str.slice(0,-1)+"]";
}

var test1 = new Object();
test1.foo = 1;
test1.bar = 2;

var testobject = new Object();
testobject.run = 1;
testobject.fast = null;
testobject.loop = testobject;
testobject.dup = test1;

console.log(ObjToSource(testobject));
console.log(testobject.toSource());

{'run':1,'fast':null,'loop':{},'dup':{'foo':1,'bar':2}}
({run:1, fast:null, loop:{run:1, fast:null, loop:{}, dup:{foo:1, bar:2}}, dup:{foo:1, bar:2}})

console.log(obj);

console.log("object is: %O", obj);

var list = function(object) {
   for(var key in object) {
     console.log(key);
   }
}

for (var i in obj){
    console.log(obj[i], i);
}

John 0
Foo 1
Bar 2

console.log("%o", obj);

var gandalf = {
  "real name": "Gandalf",
  "age (est)": 11000,
  "race": "Maia",
  "haveRetirementPlan": true,
  "aliases": [
    "Greyhame",
    "Stormcrow",
    "Mithrandir",
    "Gandalf the Grey",
    "Gandalf the White"
  ]
};
//to console log object, we cannot use console.log("Object gandalf: " + gandalf);
console.log("Object gandalf: ");
//this will show object gandalf ONLY in Google Chrome NOT in IE
console.log(gandalf);
//this will show object gandalf IN ALL BROWSERS!
console.log(JSON.stringify(gandalf));
//this will show object gandalf IN ALL BROWSERS! with beautiful indent
console.log(JSON.stringify(gandalf, null, 4));

console.log(Object.keys(yourObj));
console.log(Object.values(yourObj));

Object.keys(yourObj).forEach(e => console.log(`key=${e}  value=${yourObj[e]}`));

console.table(yourObj)

console.log(yourObj)

<script type="text/javascript">
    function print_r(theObj){
       if(theObj.constructor == Array || theObj.constructor == Object){
          document.write("<ul>")
          for(var p in theObj){
             if(theObj[p].constructor == Array || theObj[p].constructor == Object){
                document.write("<li>["+p+"] => "+typeof(theObj)+"</li>");
                document.write("<ul>")
                print_r(theObj[p]);
                document.write("</ul>")
             } else {
                document.write("<li>["+p+"] => "+theObj[p]+"</li>");
             }
          }
          document.write("</ul>")
       }
    }
</script>

<script type="text/javascript">
print_r(JAVACRIPT_ARRAY_OR_OBJECT);
</script>

JSON.stringify(obj)

var args_string = JSON.stringify(obj);
console.log(args_string);

alert(args_string);

foo.moo = "stackoverflow";
console.log(foo.moo);

/**
 * @param variable mixed  The var to log to the console
 * @param varName string  Optional, will appear as a label before the var
 */
function dd(variable, varName) {
    var varNameOutput;

    varName = varName || '';
    varNameOutput = varName ? varName + ':' : '';

    console.warn(varNameOutput, variable, ' (' + (typeof variable) + ')');
}

var obj = {field1: 'xyz', field2: 2016};
dd(obj, 'My Cool Obj');

var print = function(obj, delp, delo, ind){
    delp = delp!=null ? delp : "t"; // property delimeter
    delo = delo!=null ? delo : "n"; // object delimeter
    ind = ind!=null ? ind : " "; // indent; ind+ind geometric addition not great for deep objects
    var str='';

    for(var prop in obj){
        if(typeof obj[prop] == 'string' || typeof obj[prop] == 'number'){
          var q = typeof obj[prop] == 'string' ? "" : ""; // make this "'" to quote strings
          str += ind + prop + ': ' + q + obj[prop] + q + '; ' + delp;
        }else{
          str += ind + prop + ': {'+ delp + print(obj[prop],delp,delo,ind+ind) + ind + '}' + delo;
        }
    }
    return str;
};

var print = function( o, maxLevel, level )
{
    if ( typeof level == "undefined" )
    {
        level = 0;
    }
    if ( typeof maxlevel == "undefined" )
    {
        maxLevel = 0;
    }

    var str = '';
    // Remove this if you don't want the pre tag, but make sure to remove
    // the close pre tag on the bottom as well
    if ( level == 0 )
    {
        str = '<pre>';   // can also be <pre>
    }

    var levelStr = '<br>';
    for ( var x = 0; x < level; x++ )
    {
        levelStr += '    ';   // all those spaces only work with <pre>
    }

    if ( maxLevel != 0 && level >= maxLevel )
    {
        str += levelStr + '...<br>';
        return str;
    }

    for ( var p in o )
    {
        switch(typeof o[p])
        {
          case 'string':
          case 'number':    // .tostring() gets automatically applied
          case 'boolean':   // ditto
            str += levelStr + p + ': ' + o[p] + ' <br>';
            break;

          case 'object':    // this is where we become recursive
          default:
            str += levelStr + p + ': [ <br>' + print( o[p], maxLevel, level + 1 ) + levelStr + ']</br>';
            break;
        }
    }

    // Remove this if you don't want the pre tag, but make sure to remove
    // the open pre tag on the top as well
    if ( level == 0 )
    {
        str += '</pre>';   // also can be </pre>
    }
    return str;
};

function printObj(obj) {
console.log((function traverse(tab, obj) {
    let str = "";
    if(typeof obj !== 'object') {
        return obj + ',';
    }
    if(Array.isArray(obj)) {
        return '[' + obj.map(o=>JSON.stringify(o)).join(',') + ']' + ',';
    }
    str = str + '{n';
    for(var p in obj) {
        str = str + tab + ' ' + p + ' : ' + traverse(tab+' ', obj[p]) +'n';
    }
    str = str.slice(0,-2) + str.slice(-1);
    str = str + tab + '},';
    return str;
}('',obj).slice(0,-1)))};

var result = beautinator({ "font-size": "26px","font-family": "'Open Sans', sans-serif",color: "white", overflow: "hidden",padding: "4px 4px 4px 8px",Text: { display: "block", width: "100%","text-align": "center", "padding-left": "2px","word-break": "break-word"}})
console.log(result)

{ "font-size": "26px",
  "font-family": "'Open Sans', sans-serif",
  color: "white", overflow: "hidden",
  padding: "4px 4px 4px 8px",
  Text: { display: "block", width: "100%",
          "text-align": "center", "padding-left": "2px",
          "word-break": "break-word"
  }
}