How to define a javascript function from Chromium Console

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I'm trying to define a Javascript function or a simple variable in Chromium Browser debugger console. After definition, when I cannot reach this function. What shall be the problem for it?

Here are the variable and function definition that I write on the chromium console:

var myvar;

var f = function(){
   console.log("Hello world");
};

function f2(){
   console.log("Hello world");
};

By the way, I can reach the functions that I created at Mozilla Firefox Browser.

What is the problem with Chromium Browser?

function is reserved word in javascript.

Try this

var f = function() {
   console.log("Hello world");
};

instead of

var function = f(){
   console.log("Hello world");
};

Get Started With Running JavaScript In The Console, To call a JavaScript function from the console, run the following code: Example. <​!DOCTYPE html> <html> <body> <script> var display  The Console is a REPL, which stands for Read, Evaluate, Print, and Loop. It reads the JavaScript that you type into it, evaluates your code, prints out the result of your expression , and then

You can try this:

function fun(a,b)
{
   console.log(a,b);
}

fun(5,6); // calling

Is there a way to create and run javascript in Chrome?, Overview; Set up DevTools; View and change the JavaScript or DOM of the The Console also has a set of convenience functions that make it easier by Kayce Basques (Technical Writer, Chrome DevTools & Lighthouse). To call a JavaScript function from the console, run the following code:Example<!DOCTYPE html>

You can also write

document.myFunc = function(){alert("Hello");}

Call it with

document.myFunc()

But I'm not an expert

Using Your Browser to Diagnose JavaScript Errors, With a debugger, you can also set breakpoints (places where code execution can be Tip: Read more about the console.log() method in our JavaScript Console Chrome. Open the browser. From the menu, select "More tools". From tools  I want to run a javascript function from the browser console, I'm trying to do it in Chrome (windows 7) and my function is this: function playVideo() { var popo = document.getElementsByTagName("object"); for (var i=0; i<popo.length; i++) { popo[i].playVideo(); } } normally this function works fine when I fire it from a webpage <button onclick="playVideo();">play</button> or

How to call a JavaScript Function from Chrome Console?, ‍Most of these tips are for Chrome Inspector and Firefox, although many will also After console.log, debugger is my favorite quick and dirty debugging tool. Imagine you want to see the entire stack trace for the function call funcZ in the car​  javascript. developer tools. inspector. Looks like this awesome feature landed in Chrome recently but it saves you a ton of time while debugging your webapp! When inspecting an object that contains in the Console, right click on a function and you will see a handy "Show function definition". It will take you to the place in the source code where the function is defined!

Get Started With Running JavaScript In The Console, log() is a JavaScript function that prints out an input to the console. You can call this function basically anywhere in your code, and when it  Then in the console window, type the function name with the '()' to execute the function. myFunction() Also of use is being able to print out the function body to remind yourself what the function does. Do this by leaving off the '()' from the function name. function myFunction(alert('doing something!'))

JavaScript Debugging, In Google Chrome, go to View > Developer > JavaScript Console ; in Safari, To make use of a function, you “call” or “run” it by typing its name,  Console is just a wrapper defined by Browsers. If you want to run script out of Browsers, define your own error logging method. For now, you can get rid of this error

Comments
  • var function = f(){ is a syntax error. What problem are you experiencing?
  • Don't use function as a variable name, you'll get an unexpected token error
  • Sorry for the mistake while defining function f. I corrected it. After I define a function from Chromium console, I expect to call those functions or variables. However, I can't. What shall be the reason for it?