Currently, I am developing a JavaScript game that features a 2D array of squares with background colors that update each frame.
My current approach involves utilizing a borderless DOM table and setting the style.backgroundColor property of each cell every frame. However, this process is proving to be quite slow. Are there alternative methods to achieve faster performance?
When it comes to this type of calculation, drawing the squares directly on a single canvas is likely more efficient. JavaScript now compiles into highly optimized native code, so the slight overhead you may experience is probably far less than dealing with the DOM and using .style.
It's important to test your code on the specific devices and browsers you are targeting to get accurate results, as performance can vary over time.
Here is an example of how you could implement this:
let ctx = canvas.getContext("2d");
setInterval(function(){
for (var y=0; y<256; y+=16) {
for (var x=0; x<256; x+=16) {
var r = Math.floor(Math.random()*256);
var g = Math.floor(Math.random()*256);
var b = Math.floor(Math.random()*256);
ctx.fillStyle = "rgb(" + r + "," + g + "," + b + ")";
ctx.fillRect(x, y, 16, 16);
}
}
}, 10);<canvas id="canvas" width=256 height=256></canvas>I am having trouble extracting data from a webpage that triggers a new window to open when a link is clicked, resulting in an immediate download of a csv file. The URL format is a challenge as it involves complex javascript functions called via the onClick ...
I am currently working with node.js and mongodb, where I have an array of objects that contains the names corresponding to an id. Here is a sample of my array: let names = [ { value: 1, text: 'One' }, { value: 2, text: 'Two' } ...
https://i.stack.imgur.com/M4VgY.pngIs there a way to stop the landing page animation after 2-3 seconds and show the main page instead? Can I achieve this by using setTimeOut function in JavaScript? [ export default Loader; ...
Within my React-class (JSX), I've included the following code: var Select = React.createClass({ onChange: function (ev) { console.log(ev.target.value); }, render: function() { var optionsHtml = this.state.options.map(function (el) { ...
I need help solving a parallax issue that I'm currently facing. On my webpage, I have a background image positioned at the top with a parallax effect achieved through background-position: fixed. However, I now require the image to scroll along with t ...
My react-native application includes a View that contains several components. The layout displays perfectly on iPhone 6 and 5 models, but on an iPhone 4s, the bottom of one component is being clipped slightly. I'm aware of scaling base64 icons, but I ...
class Parent extends React.Component { constructor(props) { super(props) this.handleChildOnClick = this.handleChildOnClick.bind(this) } handleChildOnClick() { /* Here, I want to perform an action that involves both Child and Parent. ...
I've created a JavaScript script that smoothly fades in the page when a user enters it and fades out when they click a link to another page. The script is working as intended, but I'm facing an issue with anchor links on the page. Whenever I clic ...
I am currently in the process of developing a website utilizing Strapi as a Content Management System (CMS) and Next.js with React for the Frontend. The website features an image slider that includes an image, a headline, and a description. While I have su ...
I'm struggling with adjusting the position of my dropdown list. It keeps hiding behind the carousel (slider). When I set the position of the carousel section to absolute, it causes the navbar to become transparent and the images from the carousel show ...
Apologies for my limited proficiency in English, Hello, I am new to Vue and struggling with an issue that I can't seem to resolve. I am fetching art data from an API (a simple list of dictionaries), and then creating a multi-array structure (list of l ...
const person = { "name": "jacob", "age": 22 } I am looking to dynamically update it to: { "name": "jacob", "age": 22, "dob": number } ...
Currently, I am making a service call to the backend to save an object and expecting a number to be returned via a promise. Here is how the call looks: saveTcTemplate(item: ITermsConditionsTemplate): ng.IPromise<number> { item.modifiedDa ...
Recently, I encountered an issue with jquery flot while working on a real-time chart. Everything seemed to be functioning properly at first, but after some time had passed, I noticed a significant problem. Initially, the chart was updating correctly; howe ...
here is my custom rightTableMenu template <template> <div> <h1 align="center">{{ title }}</h1> <v-alert type="info" icon="mdi-emoticon-sad" v-if="basketStatus"> Empty Basket, please add some to basket < ...
Could someone help me with this issue? <a class='btn btn-danger' href='page.html'>Delete</a> I am trying to activate the "data-dismiss" attribute after the "href" is activated. My initial attempt was using this code: < ...
Whenever I encounter an error in my code while compiling with ts-node, the error does not seem to appear in the console. For instance:let data = await fs.readFileSync(path); In the following code snippet, I am using "fs" to read a file by passing a path ...
Currently, I am developing an address autocomplete feature that utilizes the Google Places autocomplete API. To fetch data while the user types, I have implemented React Query and utilized a <datalist> where I iterate over the array to display <o ...
Is there a method to safeguard against alterations or overrides of window.location.replace()? For instance, attempting to change it like this: window.location.replace = function(){ return "Hi" }. Initially, I experimented with using Object.free ...
Trying to add a unique touch to my image rotation with CSS. While familiar with rotating around x, y, and z axis, I want to achieve a diagonal rotation this time. Wondering if there's a way to tweak the y axis for a more slanted effect on my image? ...