# How to convert this code to cljs
**URL:** https://clojureverse.org/t/how-to-convert-this-code-to-cljs/4166
**Category:** Beginners
**Created:** [April 19, 2019, 12:06pm UTC](https://clojureverse.org/t/how-to-convert-this-code-to-cljs/4166 "2019-04-19T12:06:04Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@vinurs](https://clojureverse.org/u/vinurs)
#### Post date: [April 19, 2019, 12:06pm UTC](https://clojureverse.org/t/how-to-convert-this-code-to-cljs/4166/1 "2019-04-19T12:06:04Z")
i want to use this library [react-native-storage](https://github.com/sunnylqm/react-native-storage) in my cljs project, and write the code:
```
(def storage (new Storage #js {:size 1000
:storageBackend js/window.localStorage
:defaultExpires (* 1000 3600 24)
:enableCache true}))
(.save storage #js {:key :username :data "vinurs"})
(.load storage #js {:key :username})
```
this is the load function it provided:
```
// load
storage
.load({
key: 'loginState',
// autoSync (default: true) means if data is not found or has expired,
// then invoke the corresponding sync method
autoSync: true,
// syncInBackground (default: true) means if data expired,
// return the outdated data first while invoking the sync method.
// If syncInBackground is set to false, and there is expired data,
// it will wait for the new data and return only after the sync completed.
// (This, of course, is slower)
syncInBackground: true,
// you can pass extra params to the sync method
// see sync example below
syncParams: {
extraFetchOptions: {
// blahblah
},
someFlag: true
}
})
.then(ret => {
// found data go to then()
console.log(ret.userid);
})
.catch(err => {
// any exception including data not found
// goes to catch()
console.warn(err.message);
switch (err.name) {
case 'NotFoundError':
// TODO;
break;
case 'ExpiredError':
// TODO
break;
}
});
```
i don’t know how to convert it to cljs, and load the key’s value in cljs
---
### Author:  [@vinurs](https://clojureverse.org/u/vinurs)
#### Post date: [April 19, 2019, 1:49pm UTC](https://clojureverse.org/t/how-to-convert-this-code-to-cljs/4166/2 "2019-04-19T13:49:49Z")
```
;; (def storage (new Storage #js {:size 1000
;; :storageBackend js/window.localStorage
;; :defaultExpires (* 1000 3600 24)
;; :enableCache true}))
;; (.save storage #js {:key :username :data "vinurs"})
;; (def ret (.load storage #js {:key :username}))
;; (.then ret #(print %))
```
it can be get out like this
---
### Author:  [@tomc](https://clojureverse.org/u/tomc)
#### Post date: [April 19, 2019, 3:36pm UTC](https://clojureverse.org/t/how-to-convert-this-code-to-cljs/4166/3 "2019-04-19T15:36:24Z")
It’s not clear what part you’re struggling with, but, knowing nothing about react-native-storage, it seems possible that `key` should be a string, rather than a keyword. Also, if you supply the `syncParams` option be sure to add a #js before it.
---
### Author:  [@system](https://clojureverse.org/u/system)
#### Post date: [October 19, 2019, 3:36am UTC](https://clojureverse.org/t/how-to-convert-this-code-to-cljs/4166/4 "2019-10-19T03:36:25Z")
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