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Registers a callback that's fired when the chart is clicked.
Returns an ID which can be passed to unlisten() to unregister the callback.
Usage
Returns
Chart.onClick(callback)
String
Argument
Type
Details
this: ui.chart
ui.Chart
The ui.Chart instance.
callback
Function
The callback to fire when the chart is clicked. The callback is passed three arguments: the x-value, the y-value, and the series name. Time values are represented in UTC epoch milliseconds, like "system:time_start" values on assets. If the user clicks on a legend entry to select an entire series, the x- and y-values are null. If the user clicks an already-selected point, all arguments are null, indicating the selection was cleared.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-10-06 UTC."],[[["The `Chart.onClick()` method registers a callback function that is triggered when a user clicks on a chart."],["This function returns a unique ID that can be used with `unlisten()` to remove the registered callback."],["The callback function receives the x-value, y-value, and series name as arguments, providing information about the clicked point on the chart."],["Clicking on a legend entry to select a series results in null x and y values, while clicking an already-selected point results in all null arguments indicating selection clearance."]]],[]]