May 29, 2015 · You can use. document.getElementsByTagName("img")[***index of the image tag***].src = "<THE STRING>"+<THE VARIABLE>+"<THE REMAINING STRING>"; or assign …

Feb 13, 2013 · If you want to change the text inside another paragraph, then first give the paragraph an id, then set a variable to it using getElementById([id]) to access it ([id] means the …

Variables declared inside a { } block can be accessed from outside the block. Variables declared within a JavaScript function, are LOCAL to the function: Local variables have Function Scope: …

What I would like to do is have access to the values set in an array within a function but outside of that function. How could this be done? For example: profile = []; profile[0] = "Joe"; profile[1] = …

Apr 14, 2022 · To declare a variable: Use the var, const, or let keywords to declare local or global-scope variables. Use the const or let keywords to declare block-scope variables. When you …

Redeclaring a variable using the var keyword can impose problems. Redeclaring a variable inside a block will also redeclare the variable outside the block: Example

When to Use var, let, or const? 1. Always declare variables. 2. Always use const if the value should not be changed. 3. Always use const if the type should not be changed (Arrays and …

Mar 15, 2024 · How to Use a JavaScript Variable in HTML: Top 5 Ways. Using innerHTML or textContent; Using Template Literals; Using Event Listeners; Using document.write() Method; …

Jun 15, 2023 · One of the simplest ways to display a JavaScript variable inside an HTML element is by changing the content of the element using innerHTML or textContent. innerHTML allows …

Apr 10, 2025 · The HTML element represents the name of a variable in a mathematical expression or a programming context. It's typically presented using an italicized version of the …