How to determine which radio box is selected in the servlet

Of course, if it's a radio box, then use it"checkbox.

name");

string arr = "The name of the checkbox");

It should be noted that if the checkbox is not selected, submit the background for loop.

An error will be reported, so:

string arr = "The name of the checkbox");

if(arr!=null){

for(int i = 0; i < i++)

In JSP, assign the value of the radio box first.

The servlet then obtains the value of value based on the name attribute of the radio box.

string radio =(string)"Radio box");

At this time, the radio obtained is"The value of the radio box"

One property of the radio box checked="checked"

Use the checkboxgroup's getselectedcheckbox() method to return a currently selected checkbox object.

checkbox getselectedcheckbox()

gets the current choice from this check box group.

Such: Precautions.

function check()

Selected. radio1").checked = true is selected.

if("radio1").checked == true){'==')

function uncheck()

Unchecked. radio1").checked = false is not selected.

if("radio1").checked == false){'++')

Since your radio button names are all choserows, then yes: here's what's inside js.

function

fn()}

The name attribute of the radio form will only be used to submit the selected radio value.

Use jradiobutton to define a selection button, if you want to implement single selection, you need to add the button to the buttongroup, as follows:

buttongroup buttongroup2 = new buttongroup();

jradiobutton select_id = new jradiobutton();

jradiobutton select_name = new jradiobutton();

jradiobutton select_book = new jradiobutton();

jradiobutton select_all = new jradiobutton();

Executed on initialization:

;;Determine whether this option is selected

If select is selected, it returns true, otherwise it is false

,Then you write a judgment in js,Take its name value,You can also set an id value,

First of all, the radio box has its own name, and it is very simple to judge it with js, after getting the name of the radio box.

It's not easy to do.

private currentradiobuttonchecked;

in the load of the form.

private void form1_load(object sender, eventargs e)

Select RadioButton1 Click Event ClickPrivate void RadioButton1 Click(object sender, eventargs e).

else}

The name value of all checkboxes is the same, and then you can call the getparamatervalues() method of request in the servlet, the parentheses are the name value of your checkbox, and this square can return an array of all the values of the selected checkbox.

string checkv=(string)"dx1");

That's it.

There is a repeater with 4 html single-chain in it' type="radio"Suspicious of "this,Now I want the page to judge that the radio selection should be selected according to the server data provided at the beginning.,How should it be realized?,Please give the shed a detailed **hungry.。 Thank you...Wish.

JS takes the value of the radio box and needs to iterate through it to determine whether the checked attribute is true.

jQuery with $("#id").attr("checked")=="checked"

js"id").checked

Returns true and false indicate whether or not they are selected.