Document.all tutorial
last modified October 18, 2023
In this article we show how to use the all property to select all HTML
elements in JavaScript.
Document.all
The Document's all property return an HTMLAllCollection
rooted at the document node -- it returns the entire contents of the page. The property
is read-only.
In our example we are going to traverse the returned HTMLAllCollection
with Ramda library. See Ramda tutorial for more information.
Document.all example
The following example demonstrates the usage of the document's all property.
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
</head>
<body>
<p>
This is simple web document.
</p>
<script>
let allTags = document.all;
let nOfTags = R.length(R.keys(allTags));
console.log(`There are ${nOfTags} tags in the document`);
console.log('List of tags:');
R.forEachObjIndexed((value, key) => {
console.log(`${key}: ${value.localName}`);
}, allTags);
</script>
</body>
</html>
In the document, we display the number of the elements and their list.
<script src="//cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.min.js"></script>
We include the Ramda library.
let allTags = document.all;
The get all tags with document.all.
let nOfTags = R.length(R.keys(allTags));
console.log(`There are ${nOfTags} tags in the document`);
We compute the number of tags and show the message to the console.
R.forEachObjIndexed((value, key) => {
console.log(`${key}: ${value.localName}`);
}, allTags);
With Ramda's forEachObjIndexed we go through the collection
and output all tag names.
Source
In this article we have worked with the document's all property.