Get the bounding rectangle of a text node
Written byPhuoc Nguyen
Created
30 Aug, 2023
Category
Tip
When we want to calculate the bounding rectangle of an element, we can use the
`getBoundingClientRect()` method. Unfortunately, this method isn't available for text nodes.But don't worry, there are some tips to help you overcome this issue.
One solution is to use a
`Range` to select the text node. Then we can get the bounding rectangle of the range, which will give us the bounding rectangle of the text node.js
const calculateBoundingRect = (textNode) => {
const range = document.createRange();
range.selectNode(textNode);
return range.getBoundingClientRect();
};The second approach is simpler and more natural. We just need to place the text node inside a
`span` element, and then calculate the bounding rectangle of the `span`.js
const calculateBoundingRect = (textNode) => {
const span = document.createElement('span');
textNode.parentNode.insertBefore(span, textNode);
span.appendChild(textNode);
const rect = span.getBoundingClientRect();
// Remove the span element
span.remove();
return rect;
};
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Phước Nguyễn