main.js

/**
 * 自定义请求
 * @param option{method,url,async,contentType,data,success}
 */
function httpClient(option){

    option.method = option.method !== undefined ? option.method : "POST"
    option.async = option.async !== undefined ? option.async : false
    option.contentType = option.contentType !== undefined ? option.contentType : "application/json"
    option.data = option.data !== undefined ? option.data : {}
    option.success = option.success !== undefined ? option.success : function (result){}

    const xhr = new XMLHttpRequest();
    xhr.open(option.method, option.url, option.async);
    xhr.setRequestHeader("Content-type", option.contentType);
    xhr.onload = function (){
        if (xhr.readyState === 4 && xhr.status === 200) {
            option.success(JSON.parse(xhr.response))
        }
    }
    xhr.send(JSON.stringify(option.data));
}