Update snippet descriptions

This commit is contained in:
Isabelle Viktoria Maciohsek
2020-10-21 21:54:53 +03:00
parent 47276ac092
commit ce48fffb4d
41 changed files with 171 additions and 110 deletions

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@ -1,27 +1,32 @@
---
title: objectToQueryString
tags: object,intermediate
tags: object,advanced
---
Returns a query string generated from the key-value pairs of the given object.
- Use `Array.prototype.reduce()` on `Object.entries(queryParameters)` to create the query string.
- Determine the `symbol` to be either `?` or `&` based on the length of `queryString` and concatenate `val` to `queryString` only if it's a string.
- Determine the `symbol` to be either `?` or `&` based on the length of `queryString`.
- Concatenate `val` to `queryString` only if it's a string.
- Return the `queryString` or an empty string when the `queryParameters` are falsy.
```js
const objectToQueryString = queryParameters => {
return queryParameters
? Object.entries(queryParameters).reduce((queryString, [key, val], index) => {
const symbol = queryString.length === 0 ? '?' : '&';
queryString += typeof val === 'string' ? `${symbol}${key}=${val}` : '';
return queryString;
}, '')
? Object.entries(queryParameters).reduce(
(queryString, [key, val], index) => {
const symbol = queryString.length === 0 ? '?' : '&';
queryString +=
typeof val === 'string' ? `${symbol}${key}=${val}` : '';
return queryString;
},
''
)
: '';
};
```
```js
objectToQueryString({ page: '1', size: '2kg', key: undefined }); // '?page=1&size=2kg'
objectToQueryString({ page: '1', size: '2kg', key: undefined });
// '?page=1&size=2kg'
```