javascript - How can I get all elements and values from a form in with jquery with mixed types - Stack Overflow

admin管理员组

文章数量:1332709

I know how to get all form elements with their values in one single array with jquery with the ".each" method. If I alert the :input[type:text] element values i can see them - but if I want to alert the value of any checkbox in this very same array it always displays "on".

It is somehow possible to have the content elements of the form: 1) in one array, + 2) that it shows me the value of textfields and the checked-status of checkboxes too ?

I want to be able to iterate through this form elements array and validate the data but i cant determine the checked state of the checkboxes in this mixed array.

Hope it's not too confusing regards

I know how to get all form elements with their values in one single array with jquery with the ".each" method. If I alert the :input[type:text] element values i can see them - but if I want to alert the value of any checkbox in this very same array it always displays "on".

It is somehow possible to have the content elements of the form: 1) in one array, + 2) that it shows me the value of textfields and the checked-status of checkboxes too ?

I want to be able to iterate through this form elements array and validate the data but i cant determine the checked state of the checkboxes in this mixed array.

Hope it's not too confusing regards

• javascript
• jquery
• html

Share Improve this question Follow asked Sep 15, 2011 at 22:17 GamerGamer 6111 silver badge55 bronze badges

Add a ment  | 

5 Answers 5

Sorted by: Reset to default 3

Did you take a look at .serializeArray()? I think this might do exactly what you're looking for.

Skip jQuery and use the DOM. There's a convenient elements property of the form that contains all the form controls (inputs, selects, buttons, etc.) within the form. Use the type and tagName properties of each element to distinguish between them, and use the Boolean checked property of checkboxes and radio buttons to see if they're checked or not. This stuff works perfectly in all major scriptable browsers ever released.

Trivial example:

var els = form.elements;
for (var i = 0, len = els.length; i < len; ++i) {
    if (els[i].tagName == "INPUT") {
        if (els[i].type == "checkbox" || els[i].type == "radio") {
            alert("Checked: " + els[i].checked);
        } else {
            alert("Value: " + els[i].value);
        }
    }
}

Take a look at this to see how this is done:

http://jsfiddle/VNPsj/

You will be able to see the value of every input text and checkbox. I have them in alerts, but you can just assign them to variables or whatever you want. The magic is that the jQuery Selector (reference for the one I used is here: http://api.jquery./multiple-attribute-selector/) allows you to grab selected portions of your form.

To get the "value" of a checkbox, you'll want to check the $(this).attr('checked') method's value instead, where this is the current checkbox element you're iterating over.

Try using .checked instead of .value. That will give you a true/false status.

When you iterate through the list, check element.type to determine how to handle it. So for example

if (element.type == "checkbox") {
  //use element.checked
} else {
  //use element.value
}

If you're just trying to get the data from your form, then use .serializeArray as Rusty mentioned. However, if you're trying to do this for form validation, then you might be better of implementing the jQuery Validate plug-in.

本文标签： javascriptHow can I get all elements and values from a form in with jquery with mixed typesStack Overflow