29823fe495
* Expanded the solution for the 'Get Route Parameter Input from the Client' challenge * Expanded the guide for the 'Use body-parser to Parse POST Requests' challenge * Rewritten guide for the 'Serve JSON on a Specific Route' challenge and fixed source link * Expanded the guide for the 'Serve Static Assets' challenge * Expanded solution to the 'Get Query Parameter Input from the Client' challenge and fixed links to source file * Added solution to the 'Chain Middleware to Create a Time Server' challenge and fixed link to source file * Rewrite the 'Start a Working Express Server' challenge * Expanded the guide for 'Expand Your Project with External Packages from npm' * Added reference to semantic versioning in 'Add a Version to Your package.json' * fix/remove-links+fix-solutions * fix/remove-more-links
24 lines
867 B
Markdown
24 lines
867 B
Markdown
---
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title: Get Query Parameter Input from the Client
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---
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## Get Query Parameter Input from the Client
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<!-- The article goes here, in GitHub-flavored Markdown. Feel free to add YouTube videos, images, and CodePen/JSBin embeds -->
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Given the endpoint URL, `/name?first=firstname&last=lastname`, we can extract the query parameters (`first` and `last`) and their corresponding values from the `req.query` object and send a custom JSON response containing values derived from the query parameters to the client.
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### Solution
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```javascript
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app.get("/name", function(req, res) {
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var firstName = req.query.first;
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var lastName = req.query.last;
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// OR you can destructure and rename the keys
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var { first: firstName, last: lastName } = req.query;
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// Use template literals to form a formatted string
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res.json({
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name: `${firstName} ${lastName}`
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});
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});
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```
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