Since input events are fired every time an adjustment is made to the value (for example, if the brightness of the color is increased), these will happen repeatedly as the color picker is used. It changes the color of the first paragraph element in the document to match the new value of the color input. The updateFirst() function is called in response to the input event. We provide two functions that deal with color changes. These are both seen below.įinally, we call select() to select the text content of the color input if the control is implemented as a text field (this has no effect if a color picker interface is provided instead). Then the color input's input event is set up to call our updateFirst() function, and the change event is set to call updateAll(). This gets a reference to the color element in a variable called colorPicker, then sets the color input's value to the value in defaultColor. addEventListener ( "change", updateAll, false ) addEventListener ( "input", updateFirst, false ) ĬolorPicker. querySelector ( "#color-picker" ) ĬolorPicker. 00 to FF (in hexadecimal) A color can be made by mixing R ed, G reen and B lue, so it is called the ' RGB Color System'. The color is defined by its mix of Red, Green and Blue, each of which can be in the range: 0 to 255 (in decimal), or.
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