Question

我正在尝试使用jQuery获取字段中的字母和数字的数量。

当前我正在使用此代码，但它不起作用：

$("#sPassword1").on('input', function() {
  var fieldValue = $(this).val();
  var count = fieldValue.length;
  var countL = fieldValue.match(/([A-z])/g).length;
  var countN = fieldValue.match(/([0-9])/g).length;
  console.log(count);
  console.log(countL);
  console.log(countN);
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type='password' id='sPassword1' value='abc12'/>

我在做什么错？ :(

Answer 1

这对我有用，似乎唯一缺少的就是在没有匹配项的情况下进行处理-匹配项不会返回空数组，而是返回空值。请参阅RegExp行：

$("#sPassword1").on('input', function() {
  var fieldValue = $(this).val();
  var count = fieldValue.length;
  var countL = (fieldValue.match(/([A-z])/g) || []).length;
  var countN = (fieldValue.match(/([0-9])/g) || []).length;
  console.log({ count, countL, countN, fieldValue });
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

<input type="text" id="sPassword1" />

Answer 2

您忘记控制match函数返回null。

$( "#sPassword1" ).on('input', function() {
      var fieldValue = $(this).val();
      var count = fieldValue.length;

      var match1= fieldValue.match(/([A-z])/g);
      var match2= fieldValue.match(/([0-9])/g);
      var countL = 0;
      var countN = 0;
      if ( match1 != undefined ){
        countL = match1.length;
      }
     if ( match2 != undefined ){
        countN =  match2.length;
      }

      console.log(countL + " " +countN );
    });

Answer 3

就这样

<?php

namespace App\Tests\Service;

use App\Service\MyClassService;
use App\Service\ExternalClient\ExternalClient;
use JMS\Serializer\Serializer;
use JMS\Serializer\SerializerInterface;
use Psr\Http\Message\RequestInterface;
use Psr\Log\LoggerInterface;
use Symfony\Bundle\FrameworkBundle\Test\KernelTestCase;
use Symfony\Component\HttpFoundation\Request;

class MyClassServiceTest extends KernelTestCase
{
    /** @var LoggerInterface */
    private $logger;

    /** @var Serializer */
    private $serializer;

    /** @var ExternalClient */
    private $externalClient;

    /** @var RequestInterface */
    private $request;

    /** @var MyClassService */
    private $myClassService;

    public function setUp()
    {
        $kernel = self::bootKernel();

        $this->logger = $kernel->getContainer()->get(LoggerInterface::class);
        $this->serializer = $kernel->getContainer()->get(SerializerInterface::class);
        $this->externalClient = $this->createMock(ExternalClient::class);
    }

    public function testPassRegistrationData()
    {
        $getParams = [
            'amount'          => '21.56',
            'product_id'      => 867,
            'order_id'        => '47t34g',
            'order_item_id'   => 2,
            'email'           => 'kiki%40bubu.com',
        ];

        $this->generateMyClassService($getParams);

        $userInformation = $this->myClassService->passRegistrationData();
        var_dump($userInformation);
    }

    /**
    * generateMyClassService
    *
    * @param $getParams
    *
    * @return MyClass
    */
    private function generateMyClassService($getParams)
    {
        $this->request = new Request($getParams, [],  [], [], [], [], null);

        $this->myClassService = new MyClassService(
            $this->logger,
            $this->serializer,
            $this->externalClient,
            $this->request
        );
    }
}

Symfony\Component\DependencyInjection\Exception\RuntimeException: Cannot autowire service "App\Service\MyClassConfirmationService": argument "$request" of method "__construct()" references class "Symfony\Component\HttpFoundation\Request" but no such service exists.

jQuery-计算字段中字母和数字的数量

3 个答案: