jsonp promise 封装

<div class="cnblogs_code">

import originJsonp from 'jsonp'export <span style="color: #0000ff">default <span style="color: #0000ff">function<span style="color: #000000"> jsonp(url,data,option) {

url += (url.indexOf('?') < 0 ? '?' : '&') +<span style="color: #000000"> param(data)

<span style="color: #0000ff">return <span style="color: #0000ff">new Promise((resolve,reject) =><span style="color: #000000"> {

originJsonp(url,option,(err,data) =><span style="color: #000000"> {

<span style="color: #0000ff">if (!<span style="color: #000000">err) {

resolve(data)

} <span style="color: #0000ff">else<span style="color: #000000"> {

reject(err)

}

})

})

}
export <span style="color: #0000ff">function<span style="color: #000000"> param(data) {

let url = ''

<span style="color: #0000ff">for (<span style="color: #0000ff">var k <span style="color: #0000ff">in<span style="color: #000000"> data) {

let value = data[k] !== undefined ? data[k] : ''<span style="color: #000000">

url += '&' + k + '=' +<span style="color: #000000"> encodeURIComponent(value)

<span style="color: #008000">//<span style="color: #008000"> url += &amp;${k}=${encodeURIComponent(value)} //都不需要拼接+了

<span style="color: #000000">  }

<span style="color: #0000ff">return url ? url.substring(1) : ''<span style="color: #000000">

}