What are the Best Alternatives to JavaScript's document.write()?

Alternatives to the Controversial document.write() in JavaScript

JavaScript developers often begin their journey by encountering the infamous document.write() function, which writes directly to the document stream. However, its use is highly discouraged due to its potential downsides.

Why Avoid document.write()

document.write() comes with several drawbacks:

• Overwrites Existing Content: When called after page load, it erases the entire document and replaces it with new content.
• Poor Performance: document.write() may cause performance degradation due to its heavy processing requirements.
• Incompatibility with Strict XHTML: It is not valid in strict XHTML markup.

Alternatives to document.write()

Instead of document.write(), consider these more suitable alternatives:

• innerHTML Property: Dynamically modify the inner HTML content of an element:

  document.getElementById("content").innerHTML = "New content";

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• createElement() and appendChild() Methods: Create and add new elements to the document:

  var newElement = document.createElement("div");
  newElement.textContent = "New content";
  document.body.appendChild(newElement);

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• createTextNode() and appendChild() Methods: Create and add text nodes to the document:

  var newText = document.createTextNode("New content");
  document.body.appendChild(newText);

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• Template Literals: Use template literals (ES6) to create and insert HTML content into the document:

  document.body.insertBefore(document.createTextNode(`<div>New content</div>`), document.body.firstChild);

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By adhering to these alternatives, you can avoid the pitfalls associated with document.write() and write more performant and maintainable JavaScript code.

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