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# JavaScript DOM Cheatsheet | ||
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### What is DOM? | ||
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The Document Object Model (DOM) is a programming interface for HTML documents. It represents the page so that programs can change the document structure, style, and content. | ||
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## DOM Methods to find HTML elements: | ||
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### Get Element by Id | ||
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Returns the element that has the ID attribute with the specified value. | ||
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```jsx | ||
let element = document.getElementById("myElement"); | ||
``` | ||
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### Get Elements By Class Name | ||
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Returns a collection of all elements in the document with the specified class name. | ||
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```jsx | ||
let elements = document.getElementsByClassName("myClass"); | ||
``` | ||
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### Get Elements By Tag Name | ||
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Returns a collection of all elements in the document with the specified tag name. | ||
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```jsx | ||
let elements = document.getElementsByTagName("p"); | ||
``` | ||
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### Query Selector All | ||
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Returns all elements that matches a specified CSS selector(s) in the document | ||
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```jsx | ||
let elements = document.querySelectorAll(".myClass"); | ||
``` | ||
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### InnerHTML | ||
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Gets or sets the HTML content within an element. | ||
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```jsx | ||
element.innerHTML = "<p>New HTML content</p>"; | ||
``` | ||
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### InnerText | ||
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Gets or sets the text content within an element. | ||
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```jsx | ||
element.innerText = "New text content"; | ||
``` | ||
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### Add Class | ||
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Adds one or more class names to an element. | ||
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```jsx | ||
element.classList.add("newClass"); | ||
``` | ||
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### Remove Class | ||
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Removes one or more class names from an element. | ||
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```jsx | ||
element.classList.remove("oldClass"); | ||
``` | ||
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### Add Event Listener | ||
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Attaches an event handler to the specified element. | ||
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```jsx | ||
const myButton = document.getElementById("myButton"); | ||
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myButton.addEventListener("click", function() { | ||
console.log("Button clicked!"); | ||
}); | ||
``` | ||
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# Learn More about JavaScript DOM from here: | ||
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https://youtu.be/85jzHRTVdsc |