html和javascript同名多个输入 - 如何？

Question

I have never done anything like this, and I would like to know how to do it. I need to put 4 inputs into a sub array if it is field out

I know that when i $_POST the form to the server it sends the names of the inputs but how do I get the input to be allowed to have the same name

for example

the sub array i need it to be in is offers here is what i dont know. How do i get the following inputs

<input name="offers[]['minspend']" value="15.00"/>
<input name="offers[]['minspend']" value="5.00"/>

<input name="offers[]['minspend']" value="19.00"/>
<input name="offers[]['minspend']" value="8.00"/>

<input name="offers[]['minspend']" value="30.00"/>
<input name="offers[]['minspend']" value="7.00"/>

<input name="offers[]['minspend']" value="100.00"/>
<input name="offers[]['minspend']" value="10.00"/>

is this correct or wrong?

thanks

Answer 1

It depends a bit on the back end technology that processes your request (java, php, whatnot), but from an html standpoint multiple elements with the same name will just send their value with the same parameter name. You don't need any special [] syntax.

GET /mypage.html?offer=15.00&offer=5.0&offer=19.0 (etc, could be post too)

Most languages that provide built in support for html requests represent this request as a map, with a key named "offer" and a value that is an array or list containing the values submitted.

For example http://docs.oracle.com/javaee/6/api/javax/servlet/ServletRequest.html#getParameterMap ()

Answer 2

This form

<input name="offers['minspend'][]" value="15.00"/>
<input name="offers['minspend'][]" value="5.00"/>

<input name="offers['minspend'][]" value="19.00"/>
<input name="offers['minspend'][]" value="8.00"/>

<input name="offers['minspend'][]" value="30.00"/>
<input name="offers['minspend'][]" value="7.00"/>

<input name="offers['minspend'][]" value="100.00"/>
<input name="offers['minspend'][]" value="10.00"/>

on doing var_dump($_POST) [assuming form method=post] give:

array(1) {
    ["offers"] = > array(1) {
        ["\'minspend\'"] = > array(8) {
            [0] = > string(5)"15.00"
            [1] = > string(4)"5.00"
            [2] = > string(5)"19.00"
            [3] = > string(4)"8.00"
            [4] = > string(5)"30.00"
            [5] = > string(4)"7.00"
            [6] = > string(6)"100.00"
            [7] = > string(5)"10.00"
        }
    }
}

So, that is how you do it.

you can remove ' s around minspend. they aren't needed.

You were almost there. offers[]['minspend'] means that you get:

array(){
    array(){
        'minspend' => "15.00"
    }
    array(){
        'minspend' => "5.00"
    }
    .. and so on
}

So what is happening is, when you do something like arr[] = 1 , 1 is inserted into array arr .

Answer 3

Well first let me tell you what i understood from the question. You want multiple input fields to have same name and then you want to select them all to perform some action. If this is the case i'd like to present a different approach - why don't you assign same class (cssclass) to all the controls you want to have same name. That way you'll be able to select them all together using document.getElementsByClassName("yourclassName") . which will return you an array of all the elements having class attribute as yourclassName . Or if you wanna stick to name then you can use document.getElementsByName("elementName"); which returns you an array of elements having name as elementName . Hope its helpful.