js里空格怎么表示

```javascript

var companyName = " Green Building Materials Supplier ";

companyName = companyName.replace(/\s+/g, ' ').trim();

Green Building Materials Supplier

```

```javascript

var lyrics = "We don't talk anymore, like we used to do";

lyrics = lyrics.replace(/\s/g, '_');

We_don't_talk_anymore,_like_we_used_to_do

```

```javascript

var data = "-- :: V A";

var parsedData = data.split(' ');

[ '--', '::', 'V', 'A' ]

```