微信公众号ios10.1 版本白屏问题

真机调试IOS 10.1.x的版本不支持fetch 所以一直loading显示白屏。

其他设备都没问题。 所以用主要属性window.fetch用来判断是否支持fetch 属性

import {
baseUrl
} from './env'export default async(url = '', data = {}, type = 'GET', method = 'fetch') => {
type = type.toUpperCase();
url = baseUrl + url; if (type == 'GET') {
let dataStr = ''; //数据拼接字符串
Object.keys(data).forEach(key => {
dataStr += key + '=' + data[key] + '&';
}) if (dataStr !== '') {
dataStr = dataStr.substr(0, dataStr.lastIndexOf('&'));
url = url + '?' + dataStr;
}
} if (window.fetch && method == 'fetch') {
let requestConfig = {
credentials: 'include',
method: type,
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json',
'Authorization': localStorage.getItem('token'),
},
mode: "cors",
// cache: "force-cache"
} if (type == 'POST') {
Object.defineProperty(requestConfig, 'body', {
value: JSON.stringify(data)
})
} try {
const response = await fetch(url, requestConfig);
const responseJson = await response.json();
return responseJson
} catch (error) {
throw new Error(error)
}
} else {
return new Promise((resolve, reject) => {
let requestObj;
if (window.XMLHttpRequest) {
requestObj = new XMLHttpRequest();
} else {
requestObj = new ActiveXObject;
} let sendData = '';
if (type == 'POST') {
sendData = JSON.stringify(data);
} requestObj.open(type, url, true);
requestObj.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
requestObj.setRequestHeader("Accept","application/json");
requestObj.setRequestHeader("Content-Type","application/json");
requestObj.setRequestHeader("Authorization",localStorage.getItem('token'));
requestObj.send(sendData); requestObj.onreadystatechange = () => {
if (requestObj.readyState == 4) {
if (requestObj.status == 200) {
let obj = requestObj.response
if (typeof obj !== 'object') {
obj = JSON.parse(obj);
}
resolve(obj)
} else {
reject(requestObj)
}
}
}
})
}
}