optimise suboptimal code #29
Conversation
WalkthroughThe recent changes to Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant Browser
participant script.js
User->>Browser: Load Page
Browser->>script.js: DOMContentLoaded Event
script.js->>Browser: Check sticky positioning support
alt Sticky Position Supported
script.js->>Browser: Initialize sticky scrolling
else
script.js->>Browser: Initialize fallback scrolling
end
script.js->>Browser: Start periodic scrolling
Poem
Thank you for using CodeRabbit. We offer it for free to the OSS community and would appreciate your support in helping us grow. If you find it useful, would you consider giving us a shout-out on your favorite social media? TipsChatThere are 3 ways to chat with CodeRabbit:
Note: Be mindful of the bot's finite context window. It's strongly recommended to break down tasks such as reading entire modules into smaller chunks. For a focused discussion, use review comments to chat about specific files and their changes, instead of using the PR comments. CodeRabbit Commands (invoked as PR comments)
Additionally, you can add CodeRabbit Configration File (
|
![coderabbitai[bot]](https://avatars.githubusercontent.com/in/347564?s=60&v=4){kind=small}
There was a problem hiding this comment.
Actionable comments posted: 2
Review details
Configuration used: CodeRabbit UI
Review profile: CHILL
Files selected for processing (1)
- script.js (1 hunks)
Additional context used
Biome
script.js
[error] 35-35: This var should be declared at the root of the enclosing function. (lint/correctness/noInnerDeclarations)
The var is accessible in the whole body of the enclosing function.
To avoid confusion, it should be declared at the root of the enclosing function.
[error] 1-47: This function expression can be turned into an arrow function. (lint/complexity/useArrowFunction)
Function expressions that don't use this can be turned into arrow functions.
Safe fix: Use an arrow function instead.
Additional comments not posted (3)
script.js (3)
3-7: The implementation ofisPositionStickySupportedusing modern JavaScript is correct and efficient.
9-15: The conditional handling for sticky position support is well-implemented and clear.
40-46: The setup for periodic scrolling instartScrollis correctly implemented.
| function _scroll() { | ||
| // Determine the height of the first cell in the table header | ||
| var rect = table.querySelector('thead tr').children[0].getBoundingClientRect(); | ||
| var topElement = document.elementFromPoint(rect.left + 1, rect.bottom + 1); | ||
| var scrollAmount = topElement.getBoundingClientRect(); | ||
| var backupScrollTop = table.scrollTop; | ||
| table.scrollTop += scrollAmount.height; | ||
|
|
||
| // console.log(scrollAmount.height); | ||
| // Check if the table has reached the bottom | ||
| if (table.scrollTop >= table.scrollHeight - table.clientHeight) { | ||
| table.scrollTop = backupScrollTop; | ||
| // Clone the original table body and append it to the table | ||
| var newClonedBody = originalTableBody.cloneNode(true); | ||
| table.appendChild(newClonedBody); | ||
| } |
There was a problem hiding this comment.
Move the variable declaration to the top of the function to improve clarity and adhere to best practices.
- function _scroll() {
+ function _scroll() {
+ var newClonedBody;
// Determine the height of the first cell in the table header
var rect = table.querySelector('thead tr').children[0].getBoundingClientRect();
var topElement = document.elementFromPoint(rect.left + 1, rect.bottom + 1);
var scrollAmount = topElement.getBoundingClientRect();
var backupScrollTop = table.scrollTop;
table.scrollTop += scrollAmount.height;
// console.log(scrollAmount.height);
// Check if the table has reached the bottom
if (table.scrollTop >= table.scrollHeight - table.clientHeight) {
table.scrollTop = backupScrollTop;
// Clone the original table body and append it to the table
- var newClonedBody = originalTableBody.cloneNode(true);
+ newClonedBody = originalTableBody.cloneNode(true);
table.appendChild(newClonedBody);
}
}Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| function _scroll() { | |
| // Determine the height of the first cell in the table header | |
| var rect = table.querySelector('thead tr').children[0].getBoundingClientRect(); | |
| var topElement = document.elementFromPoint(rect.left + 1, rect.bottom + 1); | |
| var scrollAmount = topElement.getBoundingClientRect(); | |
| var backupScrollTop = table.scrollTop; | |
| table.scrollTop += scrollAmount.height; | |
| // console.log(scrollAmount.height); | |
| // Check if the table has reached the bottom | |
| if (table.scrollTop >= table.scrollHeight - table.clientHeight) { | |
| table.scrollTop = backupScrollTop; | |
| // Clone the original table body and append it to the table | |
| var newClonedBody = originalTableBody.cloneNode(true); | |
| table.appendChild(newClonedBody); | |
| } | |
| function _scroll() { | |
| var newClonedBody; | |
| // Determine the height of the first cell in the table header | |
| var rect = table.querySelector('thead tr').children[0].getBoundingClientRect(); | |
| var topElement = document.elementFromPoint(rect.left + 1, rect.bottom + 1); | |
| var scrollAmount = topElement.getBoundingClientRect(); | |
| var backupScrollTop = table.scrollTop; | |
| table.scrollTop += scrollAmount.height; | |
| // console.log(scrollAmount.height); | |
| // Check if the table has reached the bottom | |
| if (table.scrollTop >= table.scrollHeight - table.clientHeight) { | |
| table.scrollTop = backupScrollTop; | |
| // Clone the original table body and append it to the table | |
| newClonedBody = originalTableBody.cloneNode(true); | |
| table.appendChild(newClonedBody); | |
| } | |
| } |
Tools
Biome
[error] 35-35: This var should be declared at the root of the enclosing function. (lint/correctness/noInnerDeclarations)
The var is accessible in the whole body of the enclosing function.
To avoid confusion, it should be declared at the root of the enclosing function.
| document.addEventListener('DOMContentLoaded', function() { | ||
|
|
||
| function isPositionStickySupported() { | ||
| var testElement = document.createElement('div'); | ||
| testElement.style.position = 'sticky'; | ||
| return testElement.style.position === 'sticky'; | ||
| } | ||
|
|
||
| if (isPositionStickySupported()) { | ||
| console.log('position: sticky is supported'); | ||
| // Add a class or perform some action | ||
| } else { | ||
| console.log('position: sticky is not supported'); | ||
| // Fallback or other actions | ||
| } | ||
|
|
||
| var scrollSpeed = 1; | ||
| var scrollInterval = 65; | ||
| // | ||
| // setInterval(function () { | ||
| // var scrollTop = table.scrollTop(); | ||
| // var scrollHeight = table.prop('scrollHeight'); | ||
| // var visibleHeight = table.height(); | ||
| // | ||
| // // Check if the scroll has reached near the end of the cloned table body | ||
| // if (scrollTop + visibleHeight >= scrollHeight - 20) { | ||
| var newClonedBody = originalTableBody.clone(); | ||
| var newDivider = divider.clone(); | ||
| table.append(newClonedBody); | ||
| table.append(newDivider); | ||
| // } | ||
| // | ||
| // table.animate() | ||
| // | ||
| // }, scrollInterval); | ||
| let counter = 1; | ||
| function FilipStupid() { | ||
| table.animate({ | ||
| scrollTop: table.height() * (counter++) | ||
| }, 40000, 'linear', () => { | ||
| var newClonedBody = originalTableBody.clone(); | ||
| var newDivider = divider.clone(); | ||
| table.append(newClonedBody); | ||
| table.append(newDivider); | ||
| console.log("added new element") | ||
| }); | ||
| FilipStupid(); | ||
| var table = document.getElementById('scroll-table'); | ||
| var originalTableBody = table.querySelector('tbody'); | ||
| var divider = document.createElement('div'); | ||
| divider.className = 'divider'; | ||
|
|
||
| function _scroll() { | ||
| // Determine the height of the first cell in the table header | ||
| var rect = table.querySelector('thead tr').children[0].getBoundingClientRect(); | ||
| var topElement = document.elementFromPoint(rect.left + 1, rect.bottom + 1); | ||
| var scrollAmount = topElement.getBoundingClientRect(); | ||
| var backupScrollTop = table.scrollTop; | ||
| table.scrollTop += scrollAmount.height; | ||
|
|
||
| // console.log(scrollAmount.height); | ||
| // Check if the table has reached the bottom | ||
| if (table.scrollTop >= table.scrollHeight - table.clientHeight) { | ||
| table.scrollTop = backupScrollTop; | ||
| // Clone the original table body and append it to the table | ||
| var newClonedBody = originalTableBody.cloneNode(true); | ||
| table.appendChild(newClonedBody); | ||
| } | ||
| } | ||
| FilipStupid(); | ||
|
|
||
| function startScroll() { | ||
| _scroll(); // Initial scroll | ||
| setInterval(_scroll, 5000); // Set interval for periodic scrolling | ||
| } | ||
|
|
||
| // Call startScroll() to initiate scrolling | ||
| startScroll(); | ||
| }); |
There was a problem hiding this comment.
Convert function expression to arrow function for cleaner syntax.
- document.addEventListener('DOMContentLoaded', function() {
+ document.addEventListener('DOMContentLoaded', () => {Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| document.addEventListener('DOMContentLoaded', function() { | |
| function isPositionStickySupported() { | |
| var testElement = document.createElement('div'); | |
| testElement.style.position = 'sticky'; | |
| return testElement.style.position === 'sticky'; | |
| } | |
| if (isPositionStickySupported()) { | |
| console.log('position: sticky is supported'); | |
| // Add a class or perform some action | |
| } else { | |
| console.log('position: sticky is not supported'); | |
| // Fallback or other actions | |
| } | |
| var scrollSpeed = 1; | |
| var scrollInterval = 65; | |
| // | |
| // setInterval(function () { | |
| // var scrollTop = table.scrollTop(); | |
| // var scrollHeight = table.prop('scrollHeight'); | |
| // var visibleHeight = table.height(); | |
| // | |
| // // Check if the scroll has reached near the end of the cloned table body | |
| // if (scrollTop + visibleHeight >= scrollHeight - 20) { | |
| var newClonedBody = originalTableBody.clone(); | |
| var newDivider = divider.clone(); | |
| table.append(newClonedBody); | |
| table.append(newDivider); | |
| // } | |
| // | |
| // table.animate() | |
| // | |
| // }, scrollInterval); | |
| let counter = 1; | |
| function FilipStupid() { | |
| table.animate({ | |
| scrollTop: table.height() * (counter++) | |
| }, 40000, 'linear', () => { | |
| var newClonedBody = originalTableBody.clone(); | |
| var newDivider = divider.clone(); | |
| table.append(newClonedBody); | |
| table.append(newDivider); | |
| console.log("added new element") | |
| }); | |
| FilipStupid(); | |
| var table = document.getElementById('scroll-table'); | |
| var originalTableBody = table.querySelector('tbody'); | |
| var divider = document.createElement('div'); | |
| divider.className = 'divider'; | |
| function _scroll() { | |
| // Determine the height of the first cell in the table header | |
| var rect = table.querySelector('thead tr').children[0].getBoundingClientRect(); | |
| var topElement = document.elementFromPoint(rect.left + 1, rect.bottom + 1); | |
| var scrollAmount = topElement.getBoundingClientRect(); | |
| var backupScrollTop = table.scrollTop; | |
| table.scrollTop += scrollAmount.height; | |
| // console.log(scrollAmount.height); | |
| // Check if the table has reached the bottom | |
| if (table.scrollTop >= table.scrollHeight - table.clientHeight) { | |
| table.scrollTop = backupScrollTop; | |
| // Clone the original table body and append it to the table | |
| var newClonedBody = originalTableBody.cloneNode(true); | |
| table.appendChild(newClonedBody); | |
| } | |
| } | |
| FilipStupid(); | |
| function startScroll() { | |
| _scroll(); // Initial scroll | |
| setInterval(_scroll, 5000); // Set interval for periodic scrolling | |
| } | |
| // Call startScroll() to initiate scrolling | |
| startScroll(); | |
| }); | |
| document.addEventListener('DOMContentLoaded', () => { | |
| function isPositionStickySupported() { | |
| var testElement = document.createElement('div'); | |
| testElement.style.position = 'sticky'; | |
| return testElement.style.position === 'sticky'; | |
| } | |
| if (isPositionStickySupported()) { | |
| console.log('position: sticky is supported'); | |
| // Add a class or perform some action | |
| } else { | |
| console.log('position: sticky is not supported'); | |
| // Fallback or other actions | |
| } | |
| var table = document.getElementById('scroll-table'); | |
| var originalTableBody = table.querySelector('tbody'); | |
| var divider = document.createElement('div'); | |
| divider.className = 'divider'; | |
| function _scroll() { | |
| // Determine the height of the first cell in the table header | |
| var rect = table.querySelector('thead tr').children[0].getBoundingClientRect(); | |
| var topElement = document.elementFromPoint(rect.left + 1, rect.bottom + 1); | |
| var scrollAmount = topElement.getBoundingClientRect(); | |
| var backupScrollTop = table.scrollTop; | |
| table.scrollTop += scrollAmount.height; | |
| // console.log(scrollAmount.height); | |
| // Check if the table has reached the bottom | |
| if (table.scrollTop >= table.scrollHeight - table.clientHeight) { | |
| table.scrollTop = backupScrollTop; | |
| // Clone the original table body and append it to the table | |
| var newClonedBody = originalTableBody.cloneNode(true); | |
| table.appendChild(newClonedBody); | |
| } | |
| } | |
| function startScroll() { | |
| _scroll(); // Initial scroll | |
| setInterval(_scroll, 5000); // Set interval for periodic scrolling | |
| } | |
| // Call startScroll() to initiate scrolling | |
| startScroll(); | |
| }); |
Tools
Biome
[error] 35-35: This var should be declared at the root of the enclosing function. (lint/correctness/noInnerDeclarations)
The var is accessible in the whole body of the enclosing function.
To avoid confusion, it should be declared at the root of the enclosing function.
[error] 1-47: This function expression can be turned into an arrow function. (lint/complexity/useArrowFunction)
Function expressions that don't use this can be turned into arrow functions.
Safe fix: Use an arrow function instead.
No description provided.