es6 fetch方法请求接口

fetch(url, {
    method: 'post',
    headers: {
        'Content-type': 'application/x-www-form-urlencoded; charset=UTF-8', //设置表单提交的编码方式，php那边才能用$_POST获取数据
        'X-CSRF-TOKEN': $('meta[name=\'csrf_token\']').attr('content')
    },
    body: 'inajax=1&uniStr=' + ext.info.uniStr,
    credentials: 'include'
 
}).then(function (res) {
 
    if (res.status === 200) {
 
        res.text().then(function (responseText) {
 
            var objRet = $.parseJSON(responseText);
            if (objRet.code === '0' && objRet.data) {
                //解析接口返回的数据
            }
 
        });
 
    } else {
        $('#loading').hide();
        window.loading = 1;
    }
 
    console.log('nextpage is--' + currentPage);
 
}, function (error) {
    $('#loading').hide();
    window.loading = 1;
});