I'd like to ensure that a url sent to my server is an actual website (heroku app) rather than validating for htp://fooxbvgf5766.herokuapp.com. A status code of 200 would tell me that url is an actual website.
Been searching and found this.
checkValidWebsite(appName) {
const url = `https://${appName}.herokuapp.com`
return new Promise(function (resolve, reject) {
var xhr = new XMLHttpRequest();
xhr.open('GET', url);
xhr.onload = function () {
if (this.status >= 200 && this.status < 300) {
resolve(xhr.response);
} else {
reject({
status: this.status,
statusText: xhr.statusText
});
}
};
xhr.onerror = function () {
reject({
status: this.status,
statusText: xhr.statusText
});
};
xhr.send();
});
}
Running the function:
checkValidWebsite('foo')
.then(resp => {
console.log(resp)
})
.catch(e => {
console.log('Error:', e)
})
Checking for https://foo.herokuapp.com I get cors errors. Is there a way to detect that a url is an actual website?
