With the continuous advancement of Web technology, the development of dynamic Web websites has attracted more and more attention. JavaScript, as a client-side scripting language, provides good interaction and response capabilities for Web applications. Among them, submitting a form is one of the most basic functions of JavaScript.
This article will explain to you how to use JavaScript to submit a form, mainly from the following aspects:
1. The basic structure and attributes of the form
2. Using JavaScript Obtain form data
3. Modify form data and submit the form
4. Preprocessing and verification of form data
1. Basic structure and attributes of the form
First, we need to understand the basic structure and attributes of the form. The basic structure of the form is as follows:
<form action="xxx" method="xxx" enctype="xxx">
表单控件
<input type="xxx" name="xxx">
...
</form> Among them, the action attribute indicates the URL address of the form submission, and the method attribute indicates the request method. Generally, GET## is used. # or POST, the enctype attribute indicates how to encode the form data. As for form controls, we can divide them into two categories: form elements and form fields.
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