获取单选按钮的选定值onclick的提交并将值传递给函数
[英]get selected value of radio button onclick of submit and pass value to a function
问题描述
I am doing some work in PHP. 
我正在用PHP做一些工作。 I have two php page 我有两个php页面
index.php index.php
<html>
<head>
<script>
function getVote(int)
{
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("poll").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","poll-vote.php?vote="+int,true);
xmlhttp.send();
}
</script>
</head>
<body>
<h3>Is this correct? </h3>
<div id="poll">
<form>
Yes:
<input type="radio" name="vote" value="0">
<br>No:
<input type="radio" name="vote" value="1">
<input type="submit" value="Forward" onclick="getVote(value);">
</form>
</div>
</body>
</html>
on click of submit button I need to get the value of selected radio button and pass it to the function. 在单击提交按钮时，我需要获取所选单选按钮的值并将其传递给函数。
Please help me 请帮我
6 个解决方案
解决方案1
1 2013-01-08 12:15:20
call just a function in youe onclick inline... 在您的onclick内联函数中仅调用一个函数...
<input type="submit" value="Forward" onclick="getVote();"> //here
and get checked radio value in your function.. 并在您的函数中获取检查的单选值。
var radiovalue= $('input[name="vote"]:checked').val()
try this 尝试这个
JAVASCRIPT JAVASCRIPT
function getVote()
{
var radiovalue= $('input[name="vote"]:checked').val()
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("poll").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","poll-vote.php?vote="+radiovalue,true);
xmlhttp.send();
}
HTML 的HTML
<input type="submit" value="Forward" onclick="getVote();">
解决方案2
0 2013-01-08 12:11:13
Provide action and method attribute to form first 提供动作和方法属性以首先形成
<form action="index.php" method="post">
And than only you can get the value like below: 不仅如此，您还可以获得如下所示的值：
$vote = $_POST['vote'];
I hope this is what you are looking for. 我希望这是您要寻找的。
解决方案3
0 2013-01-08 12:11:25
try: 尝试：
function getVote()
{
var int=document.getElementById("vote").value;
....
EDIT: noticed it is a radio input... so this won't work. 编辑：注意到这是一个无线电输入...所以这行不通。 You need something like: 您需要类似：
function getRadioCheckedValue(radio_name)
{
var oRadio = document.forms[0].elements[radio_name];
for(var i = 0; i < oRadio.length; i++)
{
if(oRadio[i].checked)
{
return oRadio[i].value;
}
}
return '';
}
And then do: 然后执行：
function getVote()
{
var int=getRadioCheckedValue(vote);
....
解决方案4
0 2013-01-08 12:17:39
通过jquery，您可以像下面这样获取所选电台的值：
$('input[name=vote]:checked').val()
解决方案5
0 2013-01-08 12:18:31
Try changing those 2: 尝试更改那些2：
<form name="myForm">
onclick="getValue(document.myForm);"
then the function: 然后函数：
function getValue(form){
var value = '';
for (var i = 0; i < form.elements.length; i++ ) {
if (form.elements[i].type == 'radio') {
if(form.elements[i].checked == true) {
value = form.elements[i].value;
}
}
}
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();
}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
document.getElementById("poll").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","poll-vote.php?vote="+value,true);
xmlhttp.send();
}
解决方案6
0 2013-01-08 12:19:53
Call the function without any value and then read out the radiobutton inbetween your function like this: 调用没有任何值的函数，然后像这样读出函数之间的单选按钮：
var rval = document.getElementsByName('vote');
for (var i = 0, length = rval.length; i < length; i++) {
if (rval[i].checked) {
alert(rval[i].value); // your value
}
}
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