Definition and Usage. The s metacharacter is used to find a whitespace character. A whitespace character can be: A space character.
What is %s in console log?
%j for an JSON. So essentially you are replacing the specifier with the values supplied as so: var name = ‘Chris’; console. log(‘Hi, my name is %s. ‘, name); // Hi, my name is Chris.
This one looks most like jQuery, in which case the argument is a string containing a CSS selector, so the # indicates the start of an id selector. This “Selects a single element with the given id attribute”.
Is 0 false in JS?
Can I use console warn?
warn , console. … 2 Allows console functions to be used without throwing errors, but does not appear to output the data anywhere. 3 Log output on iOS 6+ Safari can only be seen by connecting to a Mac and using the Safari debugger.
What does console debug do?
The console. debug() method outputs a message to the web console at the “debug” log level. The message is only displayed to the user if the console is configured to display debug output. In most cases, the log level is configured within the console UI.
Is console log the same as print?
The only notable difference between the two is that, when printing an object, console. log gives special treatment to HTML elements, while console. dir displays everything as plain objects.
- Code School. Great for beginners. …
- Codecademy. For complete beginners that are initially learning a language. …
- freeCodeCamp. …