validation - What is Bootstrap 4 Form Validation novalidate for?

Question

<form class="needs-validation" novalidate>

Why do we need to put novalidate? It makes a different if it is pure Html 5, but I failed to notice any differences in bootstrap 4.

标签： validationbootstrap-4

Answer 1

novalidate防止浏览器的自动验证启动并检查表单（例如确保具有类型的字段number实际上是数字，等等）。

.needs-validation让 Bootstrap JavaScript 知道表单需要 JS 来验证它。

因此，一起novalidate停止浏览器验证表单，并.needs-validation要求 Boostrap JS 来验证表单。