.text()

The .text() method in D3 is used to set text content for any selected element in a document, it can also be used to get the value of any selected element. This method can take a single value as an argument or a callback function for a complex text content manipulation of a selected element

Syntax

d3.selection("element")
  .text("Your text content goes here");

• selection("element"): This selects an element on a web page. The element refers to a specific part of the webpage, like a heading or a paragraph.
• .text(): It is used to change the text content of that chosen element and the text content is passed to it as an argument.

Example

In the example given below the .select('h1') method will select the h1 html tag element in the document and .text('Big Header') will change the content of the h1 to Big Header. This manipulation is done in the DOM and can be very useful in data visualization and updating element content when working on a dynamic application. The .text() method can also be used to retrieve the content of a selected element as seen in the example below:

d3.select('h2').text('Big Header');
let outPut = d3.select('h2').text();
console.log(outPut);

The above example will give the following output:

Big Header