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Res Jsonp

_includes/api/en/3x/res-jsonp.md

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<h3 id='res.jsonp'>res.jsonp([status|body], [body])</h3>

Send a JSON response with JSONP support. This method is identical to res.json() however opts-in to JSONP callback support.

js
res.jsonp(null)
// => null

res.jsonp({ user: 'tobi' })
// => { "user": "tobi" }

res.jsonp(500, { error: 'message' })
// => { "error": "message" }

By default the JSONP callback name is simply callback, however you may alter this with the <a href="#app-settings">jsonp callback name</a> setting. The following are some examples of JSONP responses using the same code:

js
// ?callback=foo
res.jsonp({ user: 'tobi' })
// => foo({ "user": "tobi" })

app.set('jsonp callback name', 'cb')

// ?cb=foo
res.jsonp(500, { error: 'message' })
// => foo({ "error": "message" })