Created
January 9, 2017 23:21
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Detection hover more than 500 milliseconds with RxJS
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <style type="text/css"> | |
| #main { display: flex; flex: 1; } | |
| .node { border: 1px solid gray; width: 160px; height: 100px; margin: 1px; } | |
| .node:hover { background-color: rgba(0, 0, 0, 0.1); } | |
| </style> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/rxjs/5.0.1/Rx.min.js"></script> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| </head> | |
| <body> | |
| <div id="main"></div> | |
| <textarea id="out"></textarea> | |
| </body> | |
| <script> | |
| d3.select("#main").selectAll("div") | |
| .data(["a", "b", "c"]) | |
| .enter() | |
| .append("div") | |
| .attr("class", "node") | |
| .text((e) => e) | |
| </script> | |
| <script> | |
| const t = document.querySelectorAll("body .node") | |
| console.log(t) | |
| const enter = Rx.Observable.fromEvent(t, "mouseenter") | |
| const leave = Rx.Observable.fromEvent(t, "mouseleave") | |
| const move = Rx.Observable.fromEvent(t, "mousemove") | |
| const entered = enter.map(e => true).merge(leave.map(e => false)) | |
| move | |
| .combineLatest(entered) | |
| .debounceTime(500) | |
| .filter(([e, b]) => b) | |
| .map(([e, _]) => e) | |
| .do(console.log) | |
| .subscribe(e => out.innerText = e.target.innerText) | |
| </script> | |
| </html> |
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