相关疑难解决方法(0)

<form id="customerForm">
    <label>
        First Name:
        <input id="firstName" required />
    </label>
    <label>
        Social Security Number:
        <input id="ssn" required pattern="^d{3}-d{2}-d{4}$"
            title="Expected pattern is ###-##-####" />
    </label>
    <input type="submit" />
</form>

当我在Chrome中尝试该文档时,它会接受条件并按预期显示错误.

但是当我在Safari中尝试该文档时,它没有显示任何错误.