Created
November 19, 2018 17:15
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| <!doctype html> | |
| <html lang='en'> | |
| <head> | |
| <meta charset='utf-8'> | |
| <style> | |
| .body { | |
| margin: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <input type='range' name='prog' value='5000' min='0' max='10000'> | |
| <div data-for='prog'></div> | |
| <script> | |
| const progVal = document.querySelector('[data-for="prog"]'); | |
| const progInput = document.querySelector('[name="prog"]'); | |
| const debounced = debounce(inProgress, 500, true); | |
| progVal.innerHTML = progInput.value; | |
| progInput.addEventListener('change', (e) => { | |
| progVal.innerHTML = progInput.value; | |
| }); | |
| progInput.addEventListener('input', debounced); | |
| function inProgress() { | |
| progVal.innerHTML = 'updating...'; | |
| } | |
| function debounce(func, wait, immediate) { | |
| let timeout; | |
| return () => { | |
| const context = this, args = arguments; | |
| const later = function() { | |
| timeout = null; | |
| if (!immediate) func.apply(context, args); | |
| }; | |
| const callNow = immediate && !timeout; | |
| clearTimeout(timeout); | |
| timeout = setTimeout(later, wait); | |
| if (callNow) func.apply(context, args); | |
| }; | |
| }; | |
| </script> | |
| </body> | |
| </html> |
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