Use the JavaScript Console to Check the Value of a Variable
Debugging is the process of finding and fixing errors or bugs in the source code of any software. When software does not work as expected, computer programmers study the code to determine why any errors occurred.
The console.log() method outputs a message to the web console. The message may be a single string (with optional substitution values), or it may be any one or more JavaScript objects.
JavaScript's console. log() function is used to print any variables that have been defined in the program or to display any other message to the user. Syntax: console.
What is ++ in JavaScript? The increment ( ++ ) operator increments (adds one to) its operand and returns the value before or after the increment, depending on where the operator is placed.
How do I open Developer Tools in Chrome? Right-click a page and select "Inspect Element". This displays the HTML code for the element you clicked. Select View Developer Developer tools.
How do I open Developer Tools in Firefox? You can open the Firefox Developer Tools from the menu by selecting Tools Web Developer Web Developer Tools or use the keyboard shortcut Ctrl + Shift + I or F12 on Windows and Linux, or Cmd + Opt + I on macOS.