如何
修复此代码,以便在尝试解析多个 url 时不运行浏览器的多个实例?理想情况下,我只想要一个浏览器打开并在其中运行多个 url。任何帮助不胜感激!
我尝试在 foreach 循环之外实例化驱动程序,但它只打印最后一个 url 的结果。
async function executeTask (driver, url) {
try{
await driver.get(url);
let result = await AxeBuilder(driver).analyze();
return Promise.resolve(result);
}
catch(err) {
return Promise.reject(err);
}
}
function iterateThroughUrls(urls) {
urls.forEach(url => {
var driver = new WebDriver.Builder().forBrowser('firefox').build();
executeTask(driver, url).then(result => {
console.log(result);
}).catch(err => {
//handle errors
});
});
}
使用 async/await,您可以在 for 循环中一个接一个地运行承诺。
async function executeTask (driver, url) {
try{
await driver.get(url);
let result = await AxeBuilder(driver).analyze();
return Promise.resolve(result);
}
catch(err) {
return Promise.reject(err);
}
}
async function serializeTasks(driver, urls) {
const results = [];
for (const url of urls) {
const result = await executeTask(driver, url);
results.push(result);
}
return results;
}
function iterateThroughUrls(urls) {
var driver = new WebDriver.Builder().forBrowser('firefox').build();
serializeTasks(driver, urls)
.then(results => console.log(results));
}