50 lines
1.1 KiB
JavaScript
50 lines
1.1 KiB
JavaScript
'use strict';
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// Here's a brief sketch of the class
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// with things that you'll need anyway
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class HoverIntent {
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constructor({
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sensitivity = 0.1, // speed less than 0.1px/ms means "hovering over an element"
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interval = 100, // measure mouse speed once per 100ms: calculate the distance between previous and next points
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elem,
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over,
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out
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}) {
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this.sensitivity = sensitivity;
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this.interval = interval;
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this.elem = elem;
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this.over = over;
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this.out = out;
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// make sure "this" is the object in event handlers.
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this.onMouseMove = this.onMouseMove.bind(this);
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this.onMouseOver = this.onMouseOver.bind(this);
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this.onMouseOut = this.onMouseOut.bind(this);
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// assign the handlers
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elem.addEventListener("mouseover", this.onMouseOver);
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elem.addEventListener("mouseout", this.onMouseOut);
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// continue from this point
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}
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onMouseOver(event) {
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/* ... */
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}
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onMouseOut(event) {
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/* ... */
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}
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onMouseMove(event) {
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/* ... */
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}
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destroy() {
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/* your code to "disable" the functionality, remove all handlers */
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}
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}
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