【快速】chrome中console下ajax访问后台

封装一个简单的chrome中console下ajax访问后台 方便寻找跨域问题

 

function httpRequest(opt) {
    opt = opt || {};
    opt.method = opt.method.toUpperCase() || 'POST';
    opt.url = opt.url || '';
    opt.async = opt.async || true;
    opt.data = opt.data || null;
    opt.success = opt.success || function () {};
    var xmlHttp = null;
    if (XMLHttpRequest) {
        xmlHttp = new XMLHttpRequest();
   }
    else {
        xmlHttp = new ActiveXObject('Microsoft.XMLHTTP');
    }
    // var postData = params.join('&');
    if (opt.method.toUpperCase() === 'POST') {
        xmlHttp.open(opt.method, opt.url, opt.async);
        xmlHttp.setRequestHeader('Content-Type', 'application/json;charset=UTF-8');
        for (var key in opt.headers){
            xmlHttp.setRequestHeader(key,  opt.headers[key]);
        }
        xmlHttp.send(JSON.stringify(opt.data));
    }
    else if (opt.method.toUpperCase() === 'GET') {
        xmlHttp.open(opt.method, opt.url + '?' + JSON.stringify(opt.data), opt.async);
        xmlHttp.send(null);
    } 
    xmlHttp.onreadystatechange = function () {
        console.log('xmlHttp.readyState',xmlHttp.readyState,'xmlHttp.status',xmlHttp.status)
            if(xmlHttp.readyState == 4) {
                if(xmlHttp.status == 200) {
                    opt.success(xmlHttp.responseText);
                }else{
                    opt.error(xmlHttp.status)
                }
            }
        
    };
}

简单调用一下 

 httpRequest({
                    url: 'http://172.16.30.184/channel/mychannel/saveChannel',
                    method: 'post',
                    dataType: 'json',
                    contentType:'application/json;charset=UTF-8',
                    data: {},
                    cache: false,
                    headers: { appToken: sessionStorage.getItem("jeeJio_appToken") },
                    success: function (res) {
                        if (res) {
                            fn(res)

                        } else {
                            fn('')
                        }
                    },
                    error: function (e) {
                        err(e)
                    }
                })

 

 

有跨域问题的情况下

无跨域问题的情况下