# Util

* category: API
* chinese: 工具库
* type: API

---

## API

Util classes provide common methods

### Util.urlHelper

getSearchParameter (searchStr,key)

Parse the value of the key of the search string.

> base on [qs](https://github.com/ljharb/qs/tree/master/lib)，which support next object and array parse

```js
import { Util } from 'weex-nuke';
const getSearchParameter = Util.urlHelper.getSearchParameter;
//Parse the value of the key value which is in the location.search or the serialized string.
const search = '?id=987&type=1'; // or Util.Location.search
console.log('id==>', getSearchParameter(search, 'id'));
console.log('type==>', getSearchParameter(search, 'type'));
```

### Util.is

all kinds of judge function inlcude

```js
is.url(value);

is.emptyObj(value);

is.alphaNumeric(value);

is.decimal(value);

is.existy(value);

is.func(value);
```

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