check if the 'required' attribute has been set, should return 'true'Īlert("Does the element have the required attribute? " + narrative.hasAttribute("required")) Īlert("the value of the required field: " + req) reflect the value of the selected opt in selectĪlert("The select opt from select is: " + decision.value) Var req = narrative.getAttribute("required") assign to var req for alert confirmation Use Case: In my embedded form I have a ‘select’ dropdown which provides several 'option’s wherein based on the selection (onchange event) the user made will set/remove the ‘required’ attribute of an HTML component.Ĭonst narrative = document.querySelector('#addtl_reason') Ĭonst decision = document.querySelector('#decision') mjs when the import() statement is used.Good day, I am reaching out with a query related to setting/removing the ‘required’ attribute from an HTML element using JavaScript on embedded forms. To use the require() statement, a module must be saved with. The major difference between require() and import() is that require() can be called from anywhere inside the program whereas import() cannot be called conditionally, it always runs at the beginning of the file.
var myVac = import("moduleName") Difference between require() and import() Import() & export() statements are used to refer to an ES module. Var myVar2 = require('./localModule') to use local modules import() Syntax: var myVar1 = require('http') //to use built-in modules require() statement basically reads a JavaScript file, executes it, and then proceeds to return the export object.
In NodeJS, require() is a built-in function to include external modules that exist in separate files. This concept is also present in other languages with minor differences in syntax and behavior, like C’s include, Python’s import. Modules are a way to split an application into separate files instead of having all of your applications in one file. But in Node.js, it’s a built-in function with a special purpose: to load modules.
Require() is not part of the standard JavaScript API.
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