实现 jsonp

[Sunny]

实现 jsonp

[beary]

const jsonp = (url, params, cbName) => {
    return new Promise((resolve, reject) => {
        const script = document.createElement("script");
        window[cbName] = (data) => {
            resolve(data);
            document.body.removeChild(script);
        }
        params = {...params, callback: cbName};
        const arr = Object.keys(params).map(key => `${key}=${params[key]}`);
        script.src = `${url}?${arr.join('&')}`;
        document.body.appendChild(script);
    })
}

[kangkang123269]

function jsonp(url, jsonpCallback, success) {
    let script = document.createElement('script');
    script.src = url;
    script.async = true;

    window[jsonpCallback] = function(data) {
        success && success(data);
    };

    document.body.appendChild(script);
}