1.安装以下插件
babel-plugin-transform-runtime
babel-preset-stage-3
2.Webpack配置
module : {
loaders : [{
test: /\.jsx?$/,
exclude: /node_modules/,
loader: 'babel-loader',
query: {
"presets": ["react", "es2015", "stage-0"]
"plugins": [
["transform-runtime", {
"polyfill": false,
"regenerator": true
}]
]
},
}]
}
3.调用实例
let fetchApi = () => {
return new Promise((resolve, reject) => {
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
if (xhr.readyState === 4) {
if (xhr.status >= 200 && xhr.status < 300) {
var response;
try {
response = JSON.parse(xhr.responseText);
} catch (e) {
reject(e);
}
if (response) {
resolve(response, xhr.status, xhr);
}
} else {
reject(xhr);
}
}
};
xhr.open('GET', 'https://api.douban.com/v2/user/aisk', true);
xhr.setRequestHeader("Content-Type", "text/plain");
xhr.send(xhr);
})
}
let testAsync = async () => {
const t = await fetchApi()
console.log(t)
}
testAsync()