Is there a way to efficiently generate multiple routes in Express?
I am looking to create routes in the format localhost:3000/${insert address here}
Should I use a for loop or is there a built-in feature in Express that can help with this? For instance, websites like Yelp have URLs like "https://www.yelp.com/biz/mcdonalds-san-jose-19." I haven't been able to find any relevant resources on this topic.
According to the documentation on express:
Route parameters are placeholders in a URL that capture values specified at their position in the URL. [...] To set up routes with route parameters, simply include the route parameters in the path of the route as demonstrated below.
app.get('/users/:userId/books/:bookId', function (req, res) {
res.send(req.params)
})
Route parameter names should consist of “word characters” (
[A-Za-z0-9_]). For more precise control over the string matched by a route parameter, you can add a regular expression in parentheses, for example:'/user/:userId(\d+)'.
When dealing with numerous routes that have a similar structure, like the example provided:
https://www.yelp.com/biz/mcdonalds-san-jose-19
Instead of creating individual routes for each location, you can create a single route with a parameter. This route handler will then look up the parameter in a database or lookup table within your code to retrieve the relevant content for that specific tag.
An example implementation of such a route with a parameter would be:
app.get("/biz/:location", (req, res) => {
const location = req.params.location;
// retrieve the appropriate content for that location using a lookup mechanism and send the response
});
By following this approach, you only need one route to serve countless potential locations without having to register separate routes for each one.
If you are unfamiliar with URL parameters in Express routes, the ":location" serves as a placeholder for any string that matches the specified pattern. Any URL fitting this pattern will correspond to this route, enabling the route handler to access the parameter via "req.params.location," where the "location" property name aligns with the one used in the URL pattern. For further information, refer to the Express documentation here.
Avoid cluttering your application with unnecessary routes. Utilize route parameters for a more streamlined approach:
app.get("/:username", (req, res) => {
res.send(req.params.username); // req.params.username stores the username from the route
})
I've exhausted all possible solutions to resolve this CORS error, but unfortunately, it persists. I've uploaded my controller, app.js file for Express, and the request. Controller: const login = async(req, res)=>{ const {username, passwo ...
Seeking feedback on the most effective way to control access to an HTML5 application that is primarily used offline. This application utilizes IndexedDB, local, and session storage to securely store data for offline use, all served via HTTPS. The main go ...
I'm having some difficulties with my code and I can't quite figure out how to solve the problem at hand. To be honest, I'm not even sure what the exact question is here. If it seems a bit confusing, I apologize - I'm still new to Jquery ...
Update: The original post has been modified to omit implementation details and complexity. I am facing an issue with an ngFor loop that invokes a method on a service. The method returns an array which is then iterated over by the for loop. The click even ...
I've been struggling to save the data entered in my form to my database, but it's not working at all. No errors are showing up and nothing is being logged. Here's the HTML code I'm using: <!DOCTYPE html> <html lang="en"> & ...
To trigger an onClick event only when the meta(mac) / ctrl(win) key is pressed, follow these steps: This is what I attempted: const [shiftOn, setShiftOn] = useState(false) useEffect(() => { document.addEventListener('keydown', (e) => ...
Having some issues with the code snippet below, I know there's an error in my code but I can't seem to figure out what it is (tried enclosing the code in quotes but that didn't work...) var Regex = require('regex') var regex = new ...
Trying to figure out how to take a high-resolution image and wrap it into a circle has been a challenge. It's like bending a steel bar until it forms a perfect circle with both ends touching. I've been grappling with threejs for the past 8 hours ...
I have been using and learning protractor for over a month now. Despite the documentation stating that Protractor waits for Angular calls to complete (http://www.protractortest.org/#/), ensuring all steps are executed synchronously, I have not found it ...
Snippet getToken(authCode: string): Promise<Token> { return fetch(tokenUrl, { method: "POST" }).then(res => res.json()).then(json => { if (json["error"]) { return Promise.reject(json); } return new Token ...
After successfully setting up a backend express server in the past few hours, I decided to implement authorization by following a tutorial. The login functionality works perfectly, but when attempting to access /authrequired (a restricted page that require ...
I am attempting to replicate the Volumetric Lighting demonstration created by JMSWRNR but I am encountering difficulties with the Occlusion Composer. Since I am not well-versed in GLSL, debugging has proven to be quite challenging, especially for someone l ...
Is there a way to hide the user interface in my main stack when I switch to the nested drawer stack? I am currently facing an issue where the header from my main stack appears above the header in my nested stack when I navigate to a screen using: navigat ...
Below is an example of JSON data: data: [{ test: { innertest: "2345", outertest: "abcd" }, trans: { sig: "sou", trip: [{ one: "2" }, { two: "3" }], otherac: "iii" },{ test: { innertest: "uuu", ...
I am trying to combine the values from 3 separate arrays, all of which have the same length. var title = ['title 1','title 2','title 3']; var description = ['description 1','description 2','descri ...
I designed a product page that includes a searchbar component and a grid component with the ag-grid import and setup. Here is a simplified version of the product page: // Code for dynamic client side rendering import const ProductGrid = dynamic(() => ...
Can someone help me with loading a div into a target from an onclick using image navigation? I also need to hide the inactive divs, ensuring that only the 1st div is initially loaded when the page loads. I've tried searching for a solution but haven&a ...
My current project involves using AngularJS to collect user input from a form, then sending this data to a PHP backend for processing. After decoding the JSON file in PHP, I then perform a database lookup to find information that matches the input values. ...
Mongoose Schema for Contact Information: const addressSchema = new Schema({ street: { type: String, trim: true }, state: { type: String, trim: true , match: [/^[a-zA-Z]{2,}/, 'Please Enter State in a Correct Format']}, zip: {type: Nu ...
I am encountering an issue where my $_POST array in PHP is empty when I try to pass a JSON object with an AJAX request on my JavaScript page. Here is the JavaScript code: function send(cat, subcat) { var type = cat.options[cat.selectedIndex].text ...