How can I display a JavaScript object?

Use native JSON.stringify method.Works with nested objects and all major browsers support this method.

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()

Link to Mozilla API Reference and other examples.

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

Use a custom JSON.stringify replacer if youencounter this Javascript error

"Uncaught TypeError: Converting circular structure to JSON"

If you want to print the object for debugging purposes, use the code:

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

will display:

Note: you must only log the object. For example, this won't work:

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

Note ': You can also use a comma in the log method, then the first line of the output will be the string and after that, the object will be rendered:

console.log('My object: ', obj);

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