javascript - 2 buttons on form only 1 with submit type but both triggers submit event - Stack Overflow

admin管理员组

文章数量:1327582

Not using jQuery, just plain javascript with DOM. There are 2 buttons on the form, one has no type, one has type="submit"

Here is an example of my question:

         <div>
            <button class="add">add</button>
        </div>
        <div>
            <button type="submit">submit</button>
        </div>

both buttons trigger the submit event. how do I get only the button with type="submit" to trigger the submit event?

Also, how do I persist the form data so that the result can stay in the "pre" tag when the submit is triggered?

Not using jQuery, just plain javascript with DOM. There are 2 buttons on the form, one has no type, one has type="submit"

Here is an example of my question:

https://plnkr.co/edit/wAlpawx2wJUZ9FXWXL9h?p=preview

         <div>
            <button class="add">add</button>
        </div>
        <div>
            <button type="submit">submit</button>
        </div>

both buttons trigger the submit event. how do I get only the button with type="submit" to trigger the submit event?

Also, how do I persist the form data so that the result can stay in the "pre" tag when the submit is triggered?

• javascript
• html
• forms

Share Improve this question Follow asked Jun 30, 2016 at 1:11 Annie CAnnie C 80422 gold badges1414 silver badges3232 bronze badges 1

• 3 Buttons by default inside of a form trigger the submit. For the second button (that you don't want to submit) you need to prevent the default action from occurring, which is to submit. – Sterling Archer Commented Jun 30, 2016 at 1:14

Add a ment  | 

4 Answers 4

Sorted by: Reset to default 4

set the type attribute to "button" or manually cancel the event

<button type='button' class='add'>add</button>

-or-

$('button.add').click(function(e){
    e.preventDefault(); // cancel default behavior
    // my add logic
});

you only need to change the type of the button that you don't want to submit with "button". I know it feels weird, but the default type of a button tag is "submit".

<button type="button">Add</button>

The default type of a button inside a form is submit. You need to set type="button" if you want to prevent it from triggering the form submit.

See this question for more details.

As per specifications:

The missing value default is the Submit Button state.

If the type attribute is in the Submit Button state, the element is specifically a submit button.

W3C documentation

本文标签： javascript2 buttons on form only 1 with submit type but both triggers submit eventStack Overflow