JavaScript - Access Value Of Radio Button
I'm trying to get the value of a radio button when clicked.
I'm dynamically creating these radio buttons while populating a table like this: Code: var rad for(blah blah blah){ insert array data into table... insert array data into table... insert array data into table... rad = document.createElement('input'); rad.setAttribute('type', 'radio'); rad.setAttribute('name', 'options'); rad.setAttribute('value', id); rad.onclick = function() { doSomething() }; cell.appendChild(rad); } If I'm in the doSomething function, how do I access the value or ID of the radio button? Thanks! Similar TutorialsI have 4 rows in a table. Each row consist of 4 radio buttons. Each radio button per row has different values in it but has the same name (group) ex: <input type="radio" name="a" value="1"> <input type="radio" name="a" value="2"> <input type="radio" name="a" value="3"> <input type="radio" name="a" value="4"> <input type="radio" name="b" value="1"> <input type="radio" name="b" value="2"> <input type="radio" name="b" value="3"> <input type="radio" name="b" value="4"> and so on.. If I click radio button A with value 2, I want to output the total at the bottom as "2".. Also, if I click radio button B with value 3, I want to output the total of A and B as 5 and so on.. How can I automatically calculate the answer based on which radio button was click? update: I got my answer from this site: http://stackoverflow.com/questions/1...s-using-jquery All, I have the following code: Code: <form action="" name="myform" method="post"> <input type="hidden" id="picimages" name="picimages" value="<?php echo $resultsetstory['bigger_id']; ?>" /> <p> <label> <input type="radio" id="picimages" name="picimages" value="<?php echo $resultsetstory['picture_id']; ?>" /> <?php if($resultsetstory['title']<>""){ echo $resultsetstory['title']; }else{ echo "Image 1"; } ?> </label> <br /> <label> <input type="radio" id="picimages" name="picimages" value="<?php echo $resultsetpic2['picture_id']; ?>" /> <?php if($resultsetpic2['title']<>""){ echo $resultsetpic2['title']; }else{ echo "Image 2"; } ?> </label> <br /> <input name="submit" type="button" value="Vote!" onclick="javascript:voteupdate(this.myform);"/> </p> </form> When I submit this, it goes to this function: Code: function voteupdate(obj) { var poststr = "picimage=" + document.getElementById("picimage").value + "&bigger_id=" + encodeURI( document.getElementById("bigger_id").value ); alert(poststr); makePOSTRequest('voteresults.php', poststr); } However I can't get the value of the radio group for the one that is selected. Can someone see what is wrong? Thanks. I don't exactly know how to word my issue. Basically, I need it so that if a user selects 'option1' in the group 'group1' when they go to 'group2' is only gives them a certain selection to choose from. If they choose 'option2' in 'group1' they will get a different set to choose from. My main dilemma is it must do this without them having to submit. All: I need some help with a radio button code. It seems simple but I am really new at JavaScript so I need help. I have created a JavaScript code that has three radio buttons (High, Medium, and Low). When you click on high two text boxes appear so that an email address can be added. What I need help with is making the text boxes disappear if someone accidentally click high and then went back to low or medium. Currently the High button stays clicked and the text boxes still show. Any help would be great. Thanks, Stephen Code: <script type="text/javascript"> function showHide(el){ obj = document.getElementById(el).style; (obj.display == 'none')? obj.display = 'block' : obj.display = 'none'; } </script> <form id="form1" name="form1" method="post" action=""> <label> <input type="Checkbox" name="High" value="High" onclick="showHide('group1')" /> High </label> <label> <input type="Checkbox" name="Medium" value="Button" /> Mediun </label> <label> <input type="Checkbox" name="Medium" value="Button" /> Low </label> <p id="group1" style="display: none;"> <label> <b>friend1  </b><input type="Text" name="textGroup1" value="@gmail.com" /> <br/> </label> <br /> <label> <b>friend2  </b><input type="text" name="textGroup1" value="@gmail.com" /> </label> </p> </form> how would i check to see if my radio button is not checked. I know in javascript the term "checked" works. Is there a way to us unchecked? here is what i am trying to figure out. Code: with (thisform) { if(document.getElementById('m21').unchecked) { window.alert('Please Verify Your Age') m21.focus(); return false;} } I'm trying to implement a visibility on or off function for extra inputs when a radio button that is "yes" inside a table... it's so "Are you married?" "Yes" "No" (no is default checked) when you hit yes I want 3 more rows like a collapse or extend feature...within the same table. So basically what I want is the table to grow.. If you select "yes" then 3 more rows will be displayed that have other inputs available... do I need to construct these extra rows in javascript? or can I referance some html to do something? ..I'm just kinda lost and brain farted out today I think... any help much appreciated. Thanks! I am looking for some help similar to this old post: http://www.codingforums.com/showthread.php?t=19588 I want my radio buttons to become submit buttons as well. So when a user clicks on a radio button it submits the action and refreshes the page accordingly. As of now using only using onclick="this.form.submit()" the page only refreshes with no change. Here is a copy of the entire form. It is a custom shipping options form (I did not create it). Any help would be appreciated. Code: <!-- Custom shipping form --> <form action="" method="post" name="update_shipping"> <table width="300"> <tr> <td><label> <input <?php if (!(strcmp($_SESSION['shippingmethod'],"1"))) {echo "checked=\"checked\"";} ?> name="grpshipping" type="radio" id="grpshipping_0" value="1" checked="checked" onclick="this.form.submit()"/> Ground Shipping</label></td> <td class="style261"><?php echo date("m/d/Y",$grounddelivery);?></td> <td class="style261">$<?php if(($_SESSION['roundedweight']) >= 21){ echo number_format($row_rsshippingprices['Ground'] + ($row_rsshippingpricesover21['Ground'] * ($varWeightover)) ,2); } else { echo number_format($row_rsshippingprices['Ground'],2); } ?></td> </tr> <?php if($rainbowcart->ConditionalTotal("Quantity", "groundshiponly", "1") == 0) {//show other shipping options ONLY if a ground shipping only item is not in the cart ?> <tr> <td><label> <input <?php if (!(strcmp($_SESSION['shippingmethod'],"2"))) {echo "checked=\"checked\"";} ?> type="radio" name="grpshipping" value="2" id="grpshipping_1" onclick="this.form.submit()" /> Fedex 3 Day</label></td> <td class="style261"><?php echo date("m/d/Y",$fedex3delivery);?></td> <td class="style261">$<?php if(($_SESSION['roundedweight']) >= 21){ echo number_format($row_rsshippingprices['Fedex3'] + ($row_rsshippingpricesover21['Fedex3'] * ($varWeightover)) ,2); } else { echo number_format($row_rsshippingprices['Fedex3'],2); } ?></td> </tr> <tr> <td><label> <input <?php if (!(strcmp($_SESSION['shippingmethod'],"3"))) {echo "checked=\"checked\"";} ?> type="radio" name="grpshipping" value="3" id="grpshipping_2" onclick="this.form.submit()"/> Fedex 2 Day</label></td> <td class="style261"><?php echo date("m/d/Y",$fedex2delivery);?></td> <td class="style261">$<?php if(($_SESSION['roundedweight']) >= 21){ echo number_format($row_rsshippingprices['Fedex2'] + ($row_rsshippingpricesover21['Fedex2'] * ($varWeightover)) ,2); } else { echo number_format($row_rsshippingprices['Fedex2'],2); } ?></td> </tr> <tr> <td><label> <input <?php if (!(strcmp($_SESSION['shippingmethod'],"4"))) {echo "checked=\"checked\"";} ?> type="radio" name="grpshipping" value="4" id="grpshipping_3" onclick="this.form.submit()"/> Next Day PM</label></td> <td class="style261"><?php echo date("m/d/Y",$nddelivery);?></td> <td class="style261">$<?php if(($_SESSION['roundedweight']) >= 21){ echo number_format($row_rsshippingprices['ONPM'] + ($row_rsshippingpricesover21['ONPM'] * ($varWeightover)) ,2); } else { echo number_format($row_rsshippingprices['ONPM'],2); } ?></td> </tr> <tr> <td><label> <input <?php if (!(strcmp($_SESSION['shippingmethod'],"5"))) {echo "checked=\"checked\"";} ?> type="radio" name="grpshipping" value="5" id="grpshipping_4" onclick="this.form.submit()"/> Next Day AM</label></td> <td class="style261"><?php echo date("m/d/Y",$nddelivery);?></td> <td class="style261">$<?php if(($_SESSION['roundedweight']) >= 21){ echo number_format($row_rsshippingprices['ONAM'] + ($row_rsshippingpricesover21['ONAM'] * ($varWeightover)) ,2); } else { echo number_format($row_rsshippingprices['ONAM'],2); } ?></td> </tr> </table> <table class="eC_ButtonWrapper" border="0" cellpadding="0" cellspacing="0"> <tr> <td align="left"><center>Choose an option above and click update to change your shipping preference.<br /><b>PLEASE BE SURE AND PRESS UPDATE IF YOU CHANGE YOUR SHIPPING OPTION<br /><br /><input type="image" name="Update_shipping" id="Update_shipping" value="Update_shipping" alt="Update_shipping" src="WA_eCart/Images/Nautica/Btn4_EN_update.gif" class="eC_ImageButton" /></center></td> </tr> </table> <?php } //end of show if ground ship item is not in the cart?> <?php if($rainbowcart->ConditionalTotal("Quantity", "groundshiponly", "1") <> 0) { ?> <font color="red">The cart contains a Ground Shipping only item, this order can only be shipped ground</font><br /><br /> <?php } ?> </form> <!-- End of Custom shipping form --> Hi all, This code works to place a mark in a radio button (check one) in a "restored" form: Code: for (var q=0;q<document.Simple.Colors.length;q++) { if (document.Simple.Colors[q].value == document.Restored.Colors.value) { document.Simple.Colors[q].checked = true ; break; } I'm curious why it won't work for a check box (check more than one): I figured it would be the same... no? Thanks, ~Wayne I using the following to read the content of a text field but how do I read the content of a radio button ? Code: String.prototype.trim = function () { //return this.replace(/^\s*/, "").replace(/\s*$/, ""); return this.replace(/^\s+|\s+$/g, '').replace(/\s+/g,' '); } var fID = document.getElementById('customerName'); fID.value = fID.value.trim(); if (fID.value.trim().split(' ').length < 2) { document.getElementById('customerNameImg').innerHTML = redX;// } else { document.getElementById('customerNameImg').innerHTML = greenTick;// } this is the part of my form code that i am having problems with Code: <ul> <li class="<? if ($empty_Field == "previousClient") {?>emptyfield<? } else { ?>field<? } ?>"> Are you a Previous Client * </li> <li class="value"> <div style="float: left;"><input type="radio" name="previousClient" id="previousClientY" value="Yes" <? if($previousClient == 'Yes') { echo 'checked'; } ?> onChange="checkValidFormInput();"> Yes </div> <div style="float: left; padding-left: 20px;"> <input type="radio" name="previousClient" id="previousClientN" value="No" <? if($previousClient == 'No') { echo 'checked'; } ?> onChange="checkValidFormInput();"> No </div> <div style="float: left; padding-left: 10px;" id="previousClientImg"></div><br style="clear:both"> </li> </ul> Hello, I am trying to implement a radio button option so that users can search specific sites such as google, yahoo, or bing from input box. Here's my code. Please help. <script type="text/javascript"> <!-- function goSearch(){ //search according to checked radio button } --> </script> <h1>Search Option</h1><br /> <input type="radio" name="search" id="google"/><a href="http://www.google.com" rel="nofollow" target="_blank"><img src="images/google.jpg" /></a> <input type="radio" name="search" id="yahoo"/><a href="http://www.yahoo.com" rel="nofollow" target="_blank"><img src="images/yahoo.jpg" /> </a> <input type="radio" name="search" id="bing" /><a href="http://www.bing.com" rel="nofollow" target="_blank"><img src="images/bing.jpg" /> </a> <br /><br /> <form method="get" action="goSearch()" rel="nofollow" target="_blank"> <div style="border:1px solid black;padding:4px;width:20em;"> <table border="0" cellpadding="0"> <tr> <td> <input type="text" name="q" size="25" maxlength="255" value="" /> <input type="submit" value="Search" /> </td> </tr> </table> </div> </form> Wondering how come this doesn't work any ideas? its validating that the radio buttons have been selected. Code: if ( ( form.q1[0].checked == false ) && ( form.q2[1].checked == false) && ( form.q3[2].checked == false )) { alert ( "Please Choose a " ); return false; } Hello, I have a form which can be saved (using a database) and later edited. When restoring data to the form , text fields are easy. There is a simple (existing) JavaScript which restores an option that was selected from a pull-down (select one) menu: Code: for (var q=0;q<document.Simple.Color.options.length;q++) { if (document.Simple.Color.options[q].value == document.Restored.Color.value) { document.Simple.Color.options[q]. selected = true; break; } I'm trying to make it work to restore a value to a radio button as well... but no luck: Code: for (var q=0;q<document.Simple.Color.options.length;q++) { if (document.Simple.Color.options[q].value == document.Restored.Color.value) { document.Simple.Color.options[q]. checked = true; break; } Any ideas? Thanks in advance. ~Wayne Hi, Hit a snag creating code for toggling with radio buttons, alert debugs return undefined for the radio button values. Would someone assist? HTML Code: <input type="radio" name="artist" onclick="toggleForm(this.value)" value="existing" /> <label for="is_new0" class="artist_radio_label">Yes</label> <input type="radio" name="artist" onclick="toggleForm(this.value)" value="new" /> <label for="is_new1" class="artist_radio_label">No</label> From Document Head Code: <head> <meta http-equiv="content-type" content="text/html; charset=iso-8859-1" /> <title>Add a Print</title> <link rel="stylesheet" href="../c/forms.css" type="text/css" /> <script type="text/javascript" src="../j/global.js"></script> <script type="text/javascript" src="../j/add_print.js"></script> </script> </head> add_print.js Code: function toggleForm(artist) { if (!document.getElementById) return false; var existing = document.getElementById("existing_artist"); var newArtist = document.getElementById("new_artist"); existing.style.display = "none"; newArtist.style.display = "none"; if(this.value == existing){ existing.style.display = "block"; }else{ newArtist.style.display = "block"; } } addLoadEvent(toggleForm); global.js - Add Load Event Code: function addLoadEvent(func) { var oldonload = window.onload; if (typeof window.onload != 'function') { window.onload = func; } else { window.onload = function() { oldonload(); func(); } } } addLoadEvent(); Hi everyone. I'm getting into javascript coding and i'm stumped with some problem about radio buttons. What I would like is to have a general function where I can pass in any group of radio buttons and have it return the textual value of the radio button selected. First, here is my code so far. Code: function Get_Radio_Selection(options) { var choice = ""; for (var index = 0; index <= options.length; index++) if (options[index].checked == true) choice = options[index].value; return choice; } Now here's a sample form: Code: <form name="form1"> <input type="radio" name="food" value="Banana">Banana <input type="radio" name="food" value="Mango">Mango <input type="radio" name="food" value="Orange">Orange <input type="radio" name="food" value="Oatmeal">Oatmeal <input type="button" name="blah" value="Get Selection" onclick="Get_Radio_Selection(document.form1.food);"> </form> My question is, when i run this function and pass it in the group of radio buttons by means of the onclick event handler, firefox 3.6.22 reports in the error console on line 22 that "options[index] is undefined". It seems that if i use the variable "index" more than one time it reports this error but if I take out the assignment to variable "choice" that it works just fine. I rewrote the function using a separate variable and this time it works perfectly: Code: function Get_Radio_Selection(options) { var choice = ""; var index; for (var i = 0; i < options.length; i++) { if (options[i].checked == true) { index = i; choice = options[index].value; } } return choice; } Notice the indexing variables in the "if" statement and the assignment to "choice" are different. Does anyone have any suggestions on why this happens? Thanks. i need to add an alert if the male is not selected in following after clicking on submit button Code: <html><head> </HEAD><BODY> <br><form name="feedback" method=post> Your Gender: <input type="radio" name="gender" value="male" id="male" /> Male <input type="radio" name="gender" value="female" id="female"CHECKED> Female</td> <input type='button' value='Submit' /> </form></BODY></HTML> Hi guys...I am new to javascript.....I need help with my code below.I need to change it to " the font size of a paragraph should only be changed if the "Magnified" button is selected AND the mouse cursor is over a paragraph. When the mouse moves over a paragraph, increase the font size by a factor of 3. When it is no longer over the paragraph, reduce the font back to its original size" HELP and thanks.... <html> <head> <title>Assignment 4</title> </head> <body> <p> <script launguage="javascript"> var fontSize = 1; function zoomIn() { fontSize += 0.1; document.body.style.fontSize = fontSize + "em"; } function zoomOut() { fontSize -= 0.1; document.body.style.fontSize = fontSize + "em"; } </script> </p> <h2>Joseph’s text zoom and radio buttons</h2> <p>Click on below buttons and see the text getting zoomed in and out..!!</p> <input type="radio" name="radio" value="fontSize -" onclick = "zoomOut()"/> <label for="original">Standard</label> <br><br> <input type="radio" name="radio" value="fontSize -" onclick = "zoomIn()"/> <label for="zoomed">Magnified</label> </body> </html> Hello Friends, i have a small problem and need your help. I have a form with 4 radio buttons, the scenario is, when a user click on a radio button a hidden content will be displayed and the other three radio buttons will be disabled so that at one time a user can only click and view single radio button and the hidden content. Here is my code to show hide the hidden content but i need when the user select one radio button the other radio buttons should disable. <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> <title>test</title> <style type="text/css" media="screen"> .hide{ display:none; } </style> </head> <body> <div id="tabs"> <div id="nav"> <p>Show Div 1:<input type="radio" name="tab" value="value1" class="div1" /></p> <p>Show Div 2:<input type="radio" name="tab" value="value2" class="div2" /></p> <p>Show Div 3:<input type="radio" name="tab" value="value3" class="div3" /></p> <p>Show Div 4:<input type="radio" name="tab" value="value4" class="div4" /></p> </div> <div id="div1" class="tab"> <p>this is div 1</p> </div> <div id="div2" class="tab"> <p>this is div 2</p> </div> <div id="div3" class="tab"> <p>this is div 3</p> </div> <div id="div4" class="tab"> <p>this is div 4</p> </div> </div> <script type="text/javascript" charset="utf-8"> (function(){ var tabs =document.getElementById('tabs'); var nav = tabs.getElementsByTagName('input'); /* * Hide all tabs */ function hideTabs(){ var tab = tabs.getElementsByTagName('div'); for(var i=0;i<=nav.length;i++){ if(tab[i].className == 'tab'){ tab[i].className = tab[i].className + ' hide'; } } } /* * Show the clicked tab */ function showTab(tab){ document.getElementById(tab).className = 'tab' } hideTabs(); /* hide tabs on load */ /* * Add click events */ for(var i=0;i<nav.length;i++){ nav[i].onclick = function(){ hideTabs(); showTab(this.className); } } })(); </script> </body> </html> Thank you for your help in advance. Hi, I am trying to use the radio button to display the information for the users. For example, when I click radio button "1", the form should display 1 text box each for first name, last name and so on. When the user clicks on radio button 2, there should be text boxes displayed for user 1 and user 2 to enter their info(first name, last name and so on). I looked at the forum, but couldn't find something similiar.Please advise. Something like ================================ Number of Users 1 2 3 # if radio button 2 is selected then User 1 First Name Last Name User 2 First Name Last Name ================================ The code is as below: <html> <head> <script type="text/javascript"> function showUser() { for(i=0;i<document.form.users.length;i++) { if (document.form.users[i].checked) val=parseInt(document.form.users[i].value); for(j=0;j<=val;j++) { document.form.write("<table cellSpacing=1 cellPadding=0 width=600 border=0>"); document.form.write("<tr> <td width='20%' align='right'><font color="#660000"><b>First Name: </b></font></td>"); document.form.write("<td><input type='text' name='fname1' size='25' maxlength='25'></td></tr>"); document.form.write("<tr><td width='20%' align='right'><font color="#660000"><b>Last Name: </b></font></td>"); document.form.write("<td><input type='text' name='lname1' size='25'maxlength='25'></td></tr>"); document.form.write("</table>"); } } } </script> </head> <form> Check the number of users to display additional input fields.<br><br> <input type="radio" name="users" value="1" onclick = "showUser()"/> 1<br/> <input type="radio" name="users" value="2" onclick = "showUser()"/>2 <br/> <input type="radio" name="users" value="3" onclick = "showUser()"/>3 <br/> </form> </html> ======================================================== Thanks in advance. Hello I am very new to Java Script. I am working on a website which requires me to use it. The site is selling items that are priced depending on the size. There are 6 fixed sizes for the width and the length can come in any size 1 through 200. So that will be user input on the length and radio buttons on the width. I am trying to have the user put in the length and click a radio button for width and then calculate the price by multiplying them. I am trying to get 1 price to display right now just to test it but I can't figure out why it isn't working. Again I am fairly new at this so there might be multiple problems with my code. Thanks in advance for the help. Code: <script type = "text/javascript"> function buttoncheck(){ var selection1 = document.menu.selection; if (selection1 == 60) {choice1()} if (selection1 == 50) {choice2()} if (selection1 == 25) {choice3()} if (selection1 == 10) {choice4()} if (selection1 == 4) {choice5()} if (selection1 == 2) {choice6()} function choice1(){ var len = Number(document.getElementById("length").value) || 0; var area1 = selection1 * len; var cost = 0; if (area1 == 60) { cost = 60} return cost; document.getElementById("TotalCost").innerHTML = "$" + cost.toFixed(2); } Code: <h4 class="auto-style3">Pricing Calculator:</h4> <p> <form method="post"> <div class="auto-style1"> <span class="auto-style2">LENGTH:</span> <input name="length" type="text" id="length" /><br /> </form> <div class="auto-style1"> <form name="menu"> <input type="radio" value="60" name="selection">60 inch</input> <input type="radio" value="50" name="selection">50 inch</input> <input type="radio" value="25" name="selection">25 inch</input> <input type="radio" value="10" name="selection">10 inch</input> <input type="radio" value="4" name="selection">4 inch label</input> <input type="radio" value="2" name="selection">2 inch label</input> </form> </div> <p class="auto-style1"> <input type="button" value="Calculate" onClick="buttoncheck()" </p> </p> <p> </p> <span id="TotalCost"></span><script type = "text/javascript"> document.getElementById("TotalCost").innerHTML = "Total cost is $" + cost.toFixed(2); As the code example below shows, I have three radio buttons that perform an javascript action when selected. Code: <script language="javascript"> function OnProductClick(product) { if (product.value == "Car") { // do something } else if (product.value == "Boat") { // do something else.. } else if (product.value == "Train") { // do else } } </script> <p>Select option <input type="radio" name="product" onclick="OnProductClick(this)" value="Car">Car</input> <input type="radio" name="product" onclick="OnProductClick(this)" value="Boat"> Boat</input> <input type="radio" name="product" onclick="OnProductClick(this)" value="Train">Train</input> </p> This setup is triggerred by a click, clicking multiple times on the same radio button will yield multiple calls to the OnProductClick function. This last part is what I would like to prevent. Say a user selects the option 'car' and then for some reason clicks on the same option again, this will lead to the OnProductClick function being executed twice. How can I prevent the second execution? |