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comparison src/chat.js @ 124:05489f6e9d6f default tip

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faster fixTextarea
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 29 Jan 2026 09:07:08 -0700
parents 1ae3613dd090
children
comparison
equal deleted inserted replaced
123:50f611bbfa19 124:05489f6e9d6f
45 fixPosts(); 45 fixPosts();
46 document.querySelector('div[input] textarea').focus(); 46 document.querySelector('div[input] textarea').focus();
47 document.querySelector('div[input]').scrollIntoView({block: 'end'}); 47 document.querySelector('div[input]').scrollIntoView({block: 'end'});
48 } 48 }
49 49
50 let textareaInitialHeight;
51
50 function fixTextarea(event) { 52 function fixTextarea(event) {
51 let textarea = event.target; 53 let textarea = event.target;
52 textarea.style.height = 'initial'; 54 if( !textareaInitialHeight )
55 textareaInitialHeight = getComputedStyle(textarea).height;
56 textarea.style.height = textareaInitialHeight;
53 textarea.style.height = (textarea.scrollHeight+2) + 'px'; 57 textarea.style.height = (textarea.scrollHeight+2) + 'px';
54 textarea.scrollIntoViewIfNeeded(false); 58 textarea.scrollIntoViewIfNeeded(false);
55 } 59 }
56 60
57 const isMobile = 'ontouchstart' in window || navigator.maxTouchPoints > 0 || navigator.msMaxTouchPoints > 0; 61 const isMobile = 'ontouchstart' in window || navigator.maxTouchPoints > 0 || navigator.msMaxTouchPoints > 0;