--- id: 587d7fa8367417b2b2512bc9 title: Update the Height of an Element Dynamically required: - src: 'https://cdnjs.cloudflare.com/ajax/libs/d3/4.3.0/d3.min.js' challengeType: 6 --- ## Description
The previous challenges covered how to display data from an array and how to add CSS classes. You can combine these lessons to create a simple bar chart. There are two steps to this: 1) Create a div for each data point in the array 2) Give each div a dynamic height, using a callback function in the style() method that sets height equal to the data value Recall the format to set a style using a callback function: selection.style("cssProperty", (d) => d)
## Instructions
Add the style() method to the code in the editor to set the height property for each element. Use a callback function to return the value of the data point with the string "px" added to it.
## Tests
```yml tests: - text: The first div should have a height of 12 pixels. testString: 'assert($(''div'').eq(0).css(''height'') == ''12px'', ''The first div should have a height of 12 pixels.'');' - text: The second div should have a height of 31 pixels. testString: 'assert($(''div'').eq(1).css(''height'') == ''31px'', ''The second div should have a height of 31 pixels.'');' - text: The third div should have a height of 22 pixels. testString: 'assert($(''div'').eq(2).css(''height'') == ''22px'', ''The third div should have a height of 22 pixels.'');' - text: The fourth div should have a height of 17 pixels. testString: 'assert($(''div'').eq(3).css(''height'') == ''17px'', ''The fourth div should have a height of 17 pixels.'');' - text: The fifth div should have a height of 25 pixels. testString: 'assert($(''div'').eq(4).css(''height'') == ''25px'', ''The fifth div should have a height of 25 pixels.'');' - text: The sixth div should have a height of 18 pixels. testString: 'assert($(''div'').eq(5).css(''height'') == ''18px'', ''The sixth div should have a height of 18 pixels.'');' - text: The seventh div should have a height of 29 pixels. testString: 'assert($(''div'').eq(6).css(''height'') == ''29px'', ''The seventh div should have a height of 29 pixels.'');' - text: The eighth div should have a height of 14 pixels. testString: 'assert($(''div'').eq(7).css(''height'') == ''14px'', ''The eighth div should have a height of 14 pixels.'');' - text: The ninth div should have a height of 9 pixels. testString: 'assert($(''div'').eq(8).css(''height'') == ''9px'', ''The ninth div should have a height of 9 pixels.'');' ```
## Challenge Seed
```html ```
## Solution
```js // solution required ```