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What is Javascript?

JavaScript is a dynamic computer programming language. It is lightweight and most commonly used as a part of web pages, whose implementations allow client-side script to interact with the user and make dynamic pages. It is an interpreted programming language with object-oriented capabilities.
JavaScript is the Programming Language for the Web.
JavaScript can update and change both HTML and CSS.
JavaScript can calculate, manipulate and validate data.

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Questions (109)

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Javascript - discord.js: 'ReferenceError: Message not defined'?

The problem occurs because you are using a messages variable that is not defined in your code. To fix this, change messages.content to message.content.

Tags: Javascript, discord.js, typeerror

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Javascript - Is there a regex pattern to remove all numbers preceding every "<" in a string?

Sure, look at character classes. The simplest way is to use "/d+" which is the same as "[0-9]+" followed by the literal "

Tags: Javascript, regex

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Javascript - Shapes rendered using ThreeJs have shaky/hazy edges?

You have to enable Anti-aliasing (see WebGLRenderer): const renderer = new THREE.WebGLRenderer({ antialias: true, });

Tags: Javascript, three.js

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Javascript - Shopify cart values only update when I use hardcoded values?

The syntax of key/object looks a bit broken. Try this: if (total_cart_price < first_free_price_threshold) { updates = { [free_product_id]: 0 };...

Tags: Javascript, fetch, shopify

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Javascript - How to use querySelectorAll() to get an element by the value of its property?

You can use the attribute selector as [attr='value']. document.querySelector("[style='order: 1']");

Tags: Javascript, dom

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Javascript - Value of variable gets lost outside a try-catch statement in a react component?

Explanation This is because the const only has context within the try block. If you want this to be accessible outside the block you need to declare it before the block and set it accordingly. Solutio...

Tags: Javascript, Reactjs

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HTML file and client side storage Javascript related question, is it possible?

You are correct, for security reasons javascript running in a web page cannot read files from your filesystem. The only way to implement permanent storage that works cross-browser would be to save the...

Tags: Javascript, html, file

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Javascript - How to make this input form-validation check right?

I will answer one question since you should only ask one at a time Color the input form in green for correct username and password Use classList.toggle and remove setting the valid class from the end...

Tags: Javascript, validation, variable-assignment

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Javascript - HTML element is textContent and value unnecessarily different?

It's because in the absence of a value attribute, the .text value is used as the 's value. From the specs for HTMLOptionElement.prototype.text The text IDL attribute, on getting, must return the resu...

Tags: Javascript, html, w3c

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Javascript - I created a function that creates objects, I want the objects created from that function to have a unique key. How can I do that?

The best way is to use closure const pAequorFactory = () => { let specimenCount = 0; // To keep track of the number of specimens created return (dna) => { specimenCount++; // Increment the sp...

Tags: Javascript, function, Object

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