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Change objects opacity

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EEfratVil
Last edited Nov 27, 2016
Created on Nov 19, 2016

Five orange circles in a row share the same fill color, and their opacity changes uniformly when a range slider is dragged. The example demonstrates a simple linked interaction between an HTML input control and SVG circle elements. Using D3 v4, the slider’s `input` event triggers a `transition` on all circles, easing their opacity over one second to match the slider’s value divided by 100. The code selects the circles with `svg.selectAll('circle')` and updates their style property, while the static SVG circles are generated with hardcoded positions and radii, and no external data source is used.

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Change opacity with range slider

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