百度API调用JSONP解决跨越问题 been blocked by CORS policy: No ‘Access-Control-Allow-Origin‘ header

百度API调用时会出现跨域，导致been blocked by CORS policy: No 'Access-Control-Allow-Origin' header 使用JSONP的解决方案如下：

封装IP函数

    function getIp(ip) {
        var url = 'http://api.map.baidu.com/location/ip?ak=11Z8uiP8kIz6AG0Vjiwzbc5f9Ii0cdHd&ip=' + ip + '&coor=bd09ll&callback=callBack';
        return url;
    }

生成script

    //生成script
    function createScript(src) {
        var el = document.createElement('script');
        console.log(el);
        el.src = src;
        document.body.appendChild(el);
    }

回调函数

    //回调函数
    function callBack(rs) {
        var city = rs['content']['address'];
        console.log(city);
    }

执行渲染

  createScript(getIp("39.185.200.145"));

Done！