从具有相同类的同一页面中的特定表单获取提交

问题描述：

i trying get the submit from a form specific with jquery and alert the value of a field type hiden that contains the a value id; i tried this. but he is getting ever same id value. here are the code jquery

var form = $(".form");

form.submit(function() {
    alert(form.find('#id').val());
    return false;
});

and here code html

<div>
    <form  action="" method="post" class="form">
        <input type="hidden" id="id" name="id" value="1" />
        <button class="submit"  type="submit" name="enviar" id="enviar">Enviar</button>
    </form>
<div/>
<div>
    <form  action="" method="post" class="form">
        <input type="hidden" id="id" name="id" value="2" />
        <button class="submit"  type="submit" name="enviar" id="enviar">Enviar</button>
    </form>
<div/>
<div>
    <form  action="" method="post" class="form">
        <input type="hidden" id="id" name="id" value="3" />
        <button class="submit"  type="submit" name="enviar" id="enviar">Enviar</button>
    </form>
<div/>

which my wrong

答

You are on the right track. But you need to use $(this) instead of form

The reason it was alerting the first value before is because when you do $('.form').val() it will get the first value by default, even if there are multiple elements. But, when you use $(this), it will get the specific .form that was submitted.

Finally, avoid using the same id for multiple elements. You can use an alternative such as classes. See Why is it a bad thing to have multiple HTML elements with the same id attribute?

var form = $(".form");

form.submit(function() {
    console.log($(this).find('.my-class').val());
    return false;
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.10.0/jquery.min.js"></script>
<div>
    <form  action="" method="post" class="form">
        <input type="hidden" class="my-class" name="id" value="1" />
        <button class="submit"  type="submit" name="enviar" id="enviar">Enviar</button>
    </form>
<div/>
<div>
    <form  action="" method="post" class="form">
        <input type="hidden" class="my-class" name="id" value="2" />
        <button class="submit"  type="submit" name="enviar" id="enviar">Enviar</button>
    </form>
<div/>
<div>
    <form  action="" method="post" class="form">
        <input type="hidden" class="my-class" name="id" value="3" />
        <button class="submit"  type="submit" name="enviar" id="enviar">Enviar</button>
    </form>
<div/>

</div>

答

id="id"

Id is supposed to be unique no matter where it's located. Try changing it to id="id1" and id="id2" for example.

答

First thing - don't create multiple DOM elements with the same ID value. ID value must be unique.

答

change

form.find('#id').val()

to $(this).find('input').val() or $(this).find('#id').val()

And of course, use unique IDs for each elements

从具有相同类的同一页面中的特定表单获取提交

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