--- id: 587d7fa7367417b2b2512bc5 title: Work with Dynamic Data in D3 challengeType: 6 forumTopicId: 301498 dashedName: work-with-dynamic-data-in-d3 --- # --description-- The last two challenges cover the basics of displaying data dynamically with D3 using the `data()` and `enter()` methods. These methods take a data set and, together with the `append()` method, create a new DOM element for each entry in the data set. In the previous challenge, you created a new `h2` element for each item in the `dataset` array, but they all contained the same text, `New Title`. This is because you have not made use of the data that is bound to each of the `h2` elements. The D3 `text()` method can take a string or a callback function as an argument: ```js selection.text((d) => d) ``` In the example above, the parameter `d` refers to a single entry in the dataset that a selection is bound to. Using the current example as context, the first `h2` element is bound to 12, the second `h2` element is bound to 31, the third `h2` element is bound to 22, and so on. # --instructions-- Change the `text()` method so that each `h2` element displays the corresponding value from the `dataset` array with a single space and the string `USD`. For example, the first heading should be `12 USD`. # --hints-- The first `h2` should have the text `12 USD`. ```js assert($('h2').eq(0).text() == '12 USD'); ``` The second `h2` should have the text `31 USD`. ```js assert($('h2').eq(1).text() == '31 USD'); ``` The third `h2` should have the text `22 USD`. ```js assert($('h2').eq(2).text() == '22 USD'); ``` The fourth `h2` should have the text `17 USD`. ```js assert($('h2').eq(3).text() == '17 USD'); ``` The fifth `h2` should have the text `25 USD`. ```js assert($('h2').eq(4).text() == '25 USD'); ``` The sixth `h2` should have the text `18 USD`. ```js assert($('h2').eq(5).text() == '18 USD'); ``` The seventh `h2` should have the text `29 USD`. ```js assert($('h2').eq(6).text() == '29 USD'); ``` The eighth `h2` should have the text `14 USD`. ```js assert($('h2').eq(7).text() == '14 USD'); ``` The ninth `h2` should have the text `9 USD`. ```js assert($('h2').eq(8).text() == '9 USD'); ``` # --seed-- ## --seed-contents-- ```html ``` # --solutions-- ```html ```