JavaScript Printing to browser Console for debugging

A browser's debugging console can be used in order to print simple messages. This debugging or web console can be directly opened in the browser  and the log method of the console JavaScript object can be invoked by typing the following:

console.log('Programming Logic And Code');

Press Enter

Output- Programming Logic And Code

var obj = { test: 1 };
console.log(['string'], 1, obj, window);

Output-

console.log({ key1: 'val', key2: ['one', 'two'], key3: { a: 1, b: 2 } });

Output:

Object { key1: 'val', key2: Array[2], key3: Object }

console.log(new Date(0)); 

console.log(function test(a, b) { return c; });

Output-

Thu Jan 01 1970 05:30:00 GMT+0530 (India Standard Time)

VM53:1 ƒ test(a, b) { return c; }

Other print method to console-

1- console.info – small informative icon (ⓘ) appears on the left side of the printed string(s) or         object(s).
2- console.warn – small warning icon (!) appears on the left side. In some browsers, the                     background of the log is yellow.
3- console.error – small times icon (⊗) appears on the left side. In some browsers, the                       background of the log is red.
4- console.timeStamp – outputs the current time and a specified string, but is non-standard:
    console.timeStamp('msg');
    Output:
    00:00:00.001 msg
5- console.trace – outputs the current stack trace or displays the same output as the log method       if invoked in the global scope.

See also- Java Palindrome No program

See Also

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