vue jsonp的封装

import originJsonp from 'jsonp'

export default function jsonp( url, data, option) {

url += ( url. indexOf( '?') < 0 ? '?' : '&') + param( data)

return new Promise(( resolve, reject) => {

originJsonp( url, option, ( err, data) => {

if (! err) {

resolve( data)

} else {

reject( err)

}

})

})

}

export function param( data) {

let url = ''

for ( var k in data) {

let value = data[ k] !== undefined ? data[ k] : ''

url += '&' + k + '=' + encodeURIComponent( value)

}

return url ? url. substring( 1) : ''

}