现在流行的axios库不支持jsonp，因此这里推荐一个jsonp库，简单易用。以下是介绍：Easy JSONPA minimal and lightweight JSONP implementation which is used to be a kind of cross domain solutions.FeaturesImplement JSONP request from the browserCombine URL query parameters by default behaviorSupport the [Promise] APILimit JSONP request periodHandle network error responseInstall# using npmnpm i easy-jsonp# using yarnyarn add easy-jsonp# using script target<script src=“jsonp.js”></script>UsageJSONP only support GET methods, same as easy-JSONP.The code below show you how to use package as a dependency// as a request dependency named jsonpimport jsonp from ’easy-jsonp’const jsonp = require(’easy-jsonp’).defaultjsonp({ url: ‘http://localhost’, // global function named callback will be invoked when JSONP response callback: ‘callback’, // any different name from request module timeout: 3000, params: { // eg. ?key0=0&key1=1… key0: 0, key1: 1 }}) .then(res => console.log(res)) .catch(err => console.error(err))⚠️ Notice: Parameter callback value MUST NOT be same as request module name (eg. dependency named jsonp above code), otherwise request module only works once and function named value of parameter callback will be reset to null (internal implementation) which means the same name request module will be also reset unexpectedly.For more customization capability, This package wouldn’t convert callback to a new name to prevent unexpected reset.jsonp({ // custom configuration})⚠️ Notice: For same reason, parameter callback value MUST NOT be jsonp.Parametersoptions parametertyperequireddescriptionurlStringtrueJSONP request addresstimeoutNumberfalse, default : 6000 millisecondshow long after timeout error is emitted. 0 to disablecallbackStringfalse, default : ‘jsonpCallback’+Date.now()global callback function name which is used to handle JSONP response.paramsObjectfalse, default: {}other parameters in query string parametersNoticeUncaught SyntaxError: Unexpected token :errorIt mostly doesn’t support JSONP request when you are calling a JSON api. The difference between JSON api and JSONP is that JSON api response with an object like { num: 1 } (It will throw a error when client executed this response as a function. ). On the other hand, JSONP will respond with a function wrapped object like callback({ num: 1 }) and we will get what we need when client executed this response as a function.