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| 1 | +"use strict" |
| 2 | +//DOM elements selection |
| 3 | +const lengthUp = document.querySelector("#length-up"); |
| 4 | +const lengthDown = document.querySelector("#length-down"); |
| 5 | +const lengthDisplay = document.querySelector("#length-display"); |
| 6 | +const play = document.querySelector("#play"); |
| 7 | +const pause = document.querySelector("#pause"); |
| 8 | +const duration = document.querySelector("#duration"); |
| 9 | +const minutes = document.querySelector("#min"); |
| 10 | +const seconds = document.querySelector("#sec"); |
| 11 | + |
| 12 | + |
| 13 | +//Increasing and decreasing the session length |
| 14 | +lengthUp.addEventListener("click", () => { |
| 15 | + let plusOne = parseInt(lengthDisplay.innerHTML) + 1; |
| 16 | + lengthDisplay.innerHTML = plusOne; |
| 17 | + duration.innerHTML = `<span id="min">${lengthDisplay.innerHTML}</span>:<span id="sec">00</span>` |
| 18 | +}); |
| 19 | +lengthDown.addEventListener("click", () => { |
| 20 | + let minusOne = parseInt(lengthDisplay.innerHTML) - 1; |
| 21 | + lengthDisplay.innerHTML = minusOne; |
| 22 | + duration.innerHTML = `<span id="min">${lengthDisplay.innerHTML}</span>:<span id="sec">00</span>` |
| 23 | +}) |
| 24 | + |
| 25 | +//Start timer |
| 26 | +let counter = {} |
| 27 | + |
| 28 | +play.addEventListener("click", function () { |
| 29 | + counter.end = parseInt(minutes.innerHTML); |
| 30 | + |
| 31 | + counter.min = minutes; |
| 32 | + counter.sec = seconds; |
| 33 | + |
| 34 | + if (counter.end > 0) { |
| 35 | + counter.ticker = setInterval(function () { |
| 36 | + counter.end--; |
| 37 | + if (counter.end <= 0) { |
| 38 | + clearInterval(counter.ticker); |
| 39 | + counter.end = 0; |
| 40 | + } |
| 41 | + let secRemain = counter.end; |
| 42 | + let minRemain = Math.floor(secRemain / 60); |
| 43 | + secRemain -= minRemain * 60; |
| 44 | + |
| 45 | + counter.min.innerHTML = minRemain; |
| 46 | + counter.sec.innerHTML = secRemain; |
| 47 | + }, 1000); |
| 48 | + } |
| 49 | +}); |
| 50 | + |
| 51 | + |
| 52 | + |
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