生成UUID

const id = window.crypto.randomUUID()
console.log(id)
// bd4d099b-3d39-4aad-a59c-c45dfac8eaf0

https://stackoverflow.com/questions/1349404/generate-random-string-characters-in-javascript

To check whether a certain field is valid, use:
检查某个输入是否有效：

$('#myField')[0].checkValidity(); // returns true/false

To check if the form is valid, use:
检查表单是否有效：

$('#myForm')[0].checkValidity(); // returns true/false

If you want to display the native error messages that some browsers have (such as Chrome), unfortunately the only way to do that is by submitting the form, like this:
如果需要显示一些浏览器（如Chrome）的原生错误信息，唯一的方法是通过提交表单:

var $myForm = $('#myForm');

if(! $myForm[0].checkValidity()) {
  // If the form is invalid, submit it. The form won't actually submit;
  // this will just cause the browser to display the native HTML5 error messages.
  $myForm.find(':submit').click();
}

Hope this helps. Keep in mind that HTML5 validation is not supported in all browsers.
希望这有帮助。请记住，并非所有的浏览器都支持HTML5验证。

How to force a html5 form validation without submitting it via jQuery

默认只支持http代理。
带用户认证的代理：http://username:password@127.0.0.1:1080

设置

npm config set proxy http://127.0.0.1:1080
npm config set https-proxy http://127.0.0.1:1080

查看

npm config get proxy
npm config get https-proxy

清除

npm config delete proxy
npm config delete https-proxy

查看所有自定义设置信息

npm config ls