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November 7, 2019 17:23
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| //https://playlist.mp3-youtube-converter.org/ | |
| let downloadForm = document.querySelector('table'); | |
| let checkBoxes = downloadForm.querySelectorAll(`[type*="checkbox"]`); | |
| let startArr = parseInt(prompt('select starting number', 'INPUT NUMBER ONLY!')); | |
| let limitArr = 20; | |
| let countArr = limitArr; | |
| countArr = startArr + countArr | |
| countArr = (countArr > checkBoxes.length ? checkBoxes.length - startArr : limitArr-1); | |
| // check | |
| for (let i = startArr - 1; i < (countArr+startArr); i++) { | |
| checkBoxes[i].checked = true; | |
| }; | |
| // uncheck | |
| for (let i = startArr - 1; i < (countArr+startArr); i++) { | |
| checkBoxes[i].checked = false; | |
| }; |
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