How to Run JavaScript Code | HTML run JavaScript
Inordertofollowalongwiththiscourse,youneedtoknowhowandwhereyourunyourJavaScriptcode.Youhaveseveraloptionstorunyourfirsthelloworldprogramming:Openyoureditorandcreateafilenamedindex.js.console.log(helloworld)HowtoRunJavaScriptfromtheCommandLineRunningaJSprogramfromthecommandlineishandledbyNodeJS.StartbyinstallingNodeJSonlocalmachineifnecessary.InstallNode.jsNowsimplyopenthecommandlineinthesamedirectoryastheindex.jsscriptyoucreated(VSCodewilldothisautomaticallywiththeintegratedterminal).node.//...
In order to follow along with this course, you need to know how and where you run your JavaScript code. You have several options to run your first hello world programming:
Open your editor and create a file named index.js.
console.log(hello world) How to Run JavaScript from the Command LineRunning a JS program from the command line is handled by NodeJS. Start by installing NodeJS on local machine if necessary.
Install Node.jsNow simply open the command line in the same directory as the index.js script you created (VS Code will do this automatically with the integrated terminal).
node . // or node index.js How to Run JavaScript from the BrowserWhen people think of “JavaScript”, they most often think of a web browser. You can run code in the browser by creating an HTML file that references the script. In our case, we used the defer option, which will execute the JS after the HTML file is finished loading.
Run a script from an HTML file ...