find length of text node in javascript

To find the length of a text node in JavaScript, you can use the .length property of the data attribute of the text node. Here's an example:

index.tsx
// Get the text node
var textNode = document.createTextNode("Hello world!");

// Output the length of the text node
console.log(textNode.data.length); // Output: 12
165 chars
6 lines

In the above example, we create a new text node with the text "Hello world!". We then use the .data attribute to access the text data of the node, and then use the .length property to get the length of the text.

Alternatively, if you have a reference to an element containing a text node (such as a paragraph), you can use the .innerText property to get the text content of the element, and then use the .length property to get the length of the text:

index.tsx
// Get the paragraph element
var paragraph = document.getElementById("my-paragraph");

// Output the length of the text in the paragraph
console.log(paragraph.innerText.length);
178 chars
6 lines

In the above example, we get a reference to a paragraph element with the ID "my-paragraph". We then use the .innerText property to get the text content of the element, and then use the .length property to get the length of the text.