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markup that will override not just the title and content but the template as well."}]},{"type":"text","value":"\n"},{"type":"element","tagName":"p","properties":{},"children":[{"type":"text","value":"Let's say we wanted to remove the digits after the decimal point from the values shown in tooltips (by default the tooltips show two digits after the decimal point for numeric values). 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tooltip renderer function receives the "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"params"}]},{"type":"text","value":" object as a single parameter. Inside that object you get the "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"xValue"}]},{"type":"text","value":" and "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"yValue"}]},{"type":"text","value":" for the highlighted data point as well as the reference to the raw "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"datum"}]},{"type":"text","value":" element from the "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"chart.data"}]},{"type":"text","value":" or "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"series.data"}]},{"type":"text","value":" array. You can then process the raw values however you like before using them as a part of the returned HTML string."}]},{"type":"text","value":"\n"},{"type":"element","tagName":"div","properties":{"className":["custom-block","note"]},"children":[{"type":"element","tagName":"div","properties":{"className":["custom-block-body"]},"children":[{"type":"element","tagName":"p","properties":{},"children":[{"type":"text","value":"Different series types get different tooltip renderer parameters. You can find out which parameters are supported by which series using the "},{"type":"element","tagName":"a","properties":{"href":"#api-reference"},"children":[{"type":"text","value":"API reference"}]},{"type":"text","value":" below."}]}]}]},{"type":"text","value":"\n"},{"type":"element","tagName":"p","properties":{},"children":[{"type":"text","value":"The effect of applying the tooltip renderer from the snippet above can be seen in the example below."}]},{"type":"text","value":"\n"},{"type":"element","tagName":"h3","properties":{"id":"example-tooltip-renderer","style":"position:relative;"},"children":[{"type":"element","tagName":"a","properties":{"href":"#example-tooltip-renderer","ariaLabel":"example tooltip renderer permalink","className":["anchor","before"]},"children":[{"type":"element","tagName":"svg","properties":{"ariaHidden":"true","focusable":"false","dataPrefix":"fas","dataIcon":"link","className":["svg-inline--fa","fa-link"],"role":"img","xmlns":"http://www.w3.org/2000/svg","viewBox":"0 0 512 512"},"children":[{"type":"element","tagName":"path","properties":{"fill":"currentColor","d":"M326.612 185.391c59.747 59.809 58.927 155.698.36 214.59-.11.12-.24.25-.36.37l-67.2 67.2c-59.27 59.27-155.699 59.262-214.96 0-59.27-59.26-59.27-155.7 0-214.96l37.106-37.106c9.84-9.84 26.786-3.3 27.294 10.606.648 17.722 3.826 35.527 9.69 52.721 1.986 5.822.567 12.262-3.783 16.612l-13.087 13.087c-28.026 28.026-28.905 73.66-1.155 101.96 28.024 28.579 74.086 28.749 102.325.51l67.2-67.19c28.191-28.191 28.073-73.757 0-101.83-3.701-3.694-7.429-6.564-10.341-8.569a16.037 16.037 0 0 1-6.947-12.606c-.396-10.567 3.348-21.456 11.698-29.806l21.054-21.055c5.521-5.521 14.182-6.199 20.584-1.731a152.482 152.482 0 0 1 20.522 17.197zM467.547 44.449c-59.261-59.262-155.69-59.27-214.96 0l-67.2 67.2c-.12.12-.25.25-.36.37-58.566 58.892-59.387 154.781.36 214.59a152.454 152.454 0 0 0 20.521 17.196c6.402 4.468 15.064 3.789 20.584-1.731l21.054-21.055c8.35-8.35 12.094-19.239 11.698-29.806a16.037 16.037 0 0 0-6.947-12.606c-2.912-2.005-6.64-4.875-10.341-8.569-28.073-28.073-28.191-73.639 0-101.83l67.2-67.19c28.239-28.239 74.3-28.069 102.325.51 27.75 28.3 26.872 73.934-1.155 101.96l-13.087 13.087c-4.35 4.35-5.769 10.79-3.783 16.612 5.864 17.194 9.042 34.999 9.69 52.721.509 13.906 17.454 20.446 27.294 10.606l37.106-37.106c59.271-59.259 59.271-155.699.001-214.959z"},"children":[]}]}]},{"type":"text","value":"Example: Tooltip Renderer"}]},{"type":"text","value":"\n"},{"type":"element","tagName":"p","properties":{},"children":[{"type":"text","value":"Notice that the tooltip renderer in the example below:"}]},{"type":"text","value":"\n"},{"type":"element","tagName":"ul","properties":{},"children":[{"type":"text","value":"\n"},{"type":"element","tagName":"li","properties":{},"children":[{"type":"text","value":"Returns two "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"div"}]},{"type":"text","value":" elements, one for the tooltip's title and another for its content."}]},{"type":"text","value":"\n"},{"type":"element","tagName":"li","properties":{},"children":[{"type":"text","value":"The value of the title comes from "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"params.xValue"}]},{"type":"text","value":" which is the name of the month."}]},{"type":"text","value":"\n"},{"type":"element","tagName":"li","properties":{},"children":[{"type":"text","value":"The title element gets its background color from the "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"params"}]},{"type":"text","value":" object. The provided color matches the color of the series."}]},{"type":"text","value":"\n"},{"type":"element","tagName":"li","properties":{},"children":[{"type":"text","value":"The "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"'Sweaters Made'"}]},{"type":"text","value":" value comes from the "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"params.yValue"}]},{"type":"text","value":", which we then stringify as an integer via "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"toFixed(0)"}]},{"type":"text","value":"."}]},{"type":"text","value":"\n"},{"type":"element","tagName":"li","properties":{},"children":[{"type":"text","value":"We use the default class names on the returned "},{"type":"element","tagName":"code","properties":{},"children":[{"type":"text","value":"div"}]},{"type":"text","value":" elements, so that our tooltip gets the default styling. You could however add your own classes to the class list, or replace the default CSS classes with your own. 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