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JavaScript - Trouble Maintaining State Of A Variable Being Passed Via Query String
Hello,
I am trying to update an iframe when the user makes a selection from a select box. I don't have any trouble with changing the iframe, but when I try to send a varible as a quey string, the variable doesn't pass to the iframe properly. // this is in my header, and it is initiated from the onchange below. // it changes the page fine, but doesn't read the varible "num" // that was passed to the function <script language="javaScript"> <!-- function updatenotes (num) { document.getElementById("desc").src = 'iframe1.cfm?dec=num' } //--> </script> // this is the select box that initiates the function from onchange // for simplicities sake, I hard coded 3 options, but in reality, // these options are ever changing <select name="Description" onchange="updatenotes(this.options[selectedIndex].value)"> <option name="">Select a project</option> <option name="2" >project2</option> <option name="3" >project3</option> </select> Any help you can offer would me ver appreciated. thanks Similar TutorialsI know I have a thread about the sorting function I'm about to post, but this problem doesn't deal with the sorting itself, but rather the fact that a variable is not passing. The code below is the relevant part to an autosuggest feature. The variable that isn't being passed is "firstValidIndex". It is being set appropriately, but when it is used in "sortArray()", its value is 0. Code: // here we must check to see if where the string matched was at the beginning of a string inside this.aNames
// firstValidIndex is the first index where the char is at the beginning of a string
var firstValidIndex;
loop1:
for(var j in firstIndices)
{
loop2:
for(var k in allOccurrences)
{
if(allOccurrences[k] == firstIndices[j])
{
firstValidIndex = firstIndices[j];
aList.push(this.aNames[i]);
ctr++;
break loop1;
break loop2;
}
}
}
function sortArray(a,b)
{
var lca = a.toLowerCase();
var lcb = b.toLowerCase();
var lco = str.toLowerCase();
var diff = lca.indexOf(lco,firstValidIndex) - lcb.indexOf(lco,firstValidIndex);
// some debugging code here
alert("Comparing "+lca+" with "+ lcb+"\nDiff:"+diff+"\nFirst Valid Index: "+firstValidIndex);
if ( diff < 0 ) return -1;
if ( diff > 0 ) return 1;
return 0;
}
aList.sort(sortArray);
I am fairly new to coding HTML with Javascript. I am hitting my head onto the table because i cannot figure out how to pull the variable value out in a document.write statement. Basically, I am calling a function to give me a random number between 1-4. I use that randomNumber to attach to different .jpg, descriptions, and URL's. So far, i have only got the image to display, but unable to get the link and description to display. Basically, i am trying to diplsay random ads and links like the one at the top of this page. p.s. I know I am getting the randomNumber out of my function becasue I can call a simple document.write(randomNumber) and it works. Substitute adDesc and adURL in place of randomNumber and I also get the description and link respectively. Code: <div id="main">
<div id="ads">
<script type="text/javascript">
// generate a random integer from 1 to 4
var randomNumber = randInt(4);
// description of the random ad
var adDesc = adDescription(randomNumber);
// URL of the random ad
var adURL = adLink(randomNumber);
document.write("<a href=adURL >");
document.write('<img src="ad' + randomNumber + '.jpg" title=adDesc >');
document.write("</a>");
</script>
</div>
If you haven't guessed it, I am pretty new. Reading a book and trying to put code into action are completely different. Thanks for any help! Hey all, I have an issue building a query string. Basically, I have this: /sites?order=site_numper_page=20& But I would like to convert it to this: /sites?order=site_num&per_page=20 I have tried this to check if the current iterator is less than the length of the object and if so, then add the "&", otherwise, don't. But it doesn't seem to work: Code: $.each(query_string, function(key,value){
params += key + '=' + value;
if((value + 1) != query_string.length){
params += "&";
}
})
Thanks for any response. Hello all, essentially i am grabbing a variable from the query string and i need to pass that value into another script. allow me to explain; usually i use this code to display a persons email address from the query string onto the page using document.write <script> function getQueryVariable(variable) { var query = window.location.search.substring(1); var vars = query.split("&"); for (var i=0;i<vars.length;i++) { var pair = vars[i].split("="); if (pair[0] == variable) { return pair[1]; } } document.write(''); } </script> then i would display the var with this <script> document.write( getQueryVariable("Contact0Email") ); </script> ------------ ok so here is what i need to do. my client sent me the code below asking me to pass the email var into the javascript and image. my programmer friend said to use php and do smething like; <SCRIPT language="javascript" src="https://www.cpctrack.com/redirconsume.aspx?CID=25240&ORDERID=<? echo . $_GET['Contact0Email']; ?>"></SCRIPT> <NOSCRIPT><IMG src="https://www.cpctrack.com/redirconsume.aspx?CID=25240&p=img&ORDERID=<? echo . $_GET['Contact0Email']; ?>" width="1" height="1" border="0"></NOSCRIPT> this syntax does not work; <? echo . $_GET['Contact0Email']; ?> WHAT DO YOU GUYS THINK? Is the syntax wrong or are there better methods? Hello everybody ! I'm searching for a javascript function that convert array to query string. Like this example : Code: var array = { a=1, b=2, c=3 };
to
a=1&b=2&c=3
I'm using jQuery and the function .serialize() convert only html forms. Does someone know a function to do this ? Thanks ! Hi I am trying to create a query string similar to the one available he http://andrewu.co.uk/tools/request/e.../example1.html The problem that I am having is that I have more than one button on my page and even though my id's are unique all of my data is displaying on the action page at the same time. The code that i am using for my buttons is: Code: <label for="name_1">Name:</label>
<input type="text" name="name1" id="name_1" tabindex="1" size="40" value="Donald Duck" />
<br />
<br />
<input type="submit" id='view1' value="Submit" tabindex="2" />
<label for="name_1">Name:</label>
<input type="text" name="name2" id="name_2" tabindex="1" size="40" value="Mickey Mouse" />
<br />
<br />
<input type="submit" id='view2' value="View" tabindex="2" />
I have a lot more than 2 buttons on my page. when a button is clicked I would like to be able to get the values from the query string and only see the values for the button that was clicked like this one: http://andrewu.co.uk/tools/request/e...ndrew+Urquhart but instead I am getting Name: Donald Duck, Name: Mickey Mouse. What would I have to add or change to obtain just one Name to display at a time but have it be different depending on which button is pressed? Hi all, I am new to JS and usually learn by studying code posted online and modify it to have it do what I need. Recently, I used a totaling plugin for an online ordering form which does the below: item1 qty(user input text) * preset price = total price item2 qty(user input text) * preset price = total price item3 qty(user input text) * preset price = total price -------------------------------------------------------- grand total -------------------------------------------------------- The JS code which passes the grandTotal variable is as below: Code: function ($this){
// sum the total of the $("[id^=total_item]") selector
var sum = $this.sum();
$("#grandTotal").text(
// round the results to 2 digits
"₹" + sum.toFixed(2)
);
}
The problem I have is the above grandTotal displays the final value when put into a table like below: Code: <td align="right" id="grandTotal"></td> But I am unable to make it work by passing it into a variable within the form fields. I would like to do something like this: Code: <input type="text" name="grandTotal" id="grandTotal" readonly="readonly" /> Can somebody please help me fix this? Any help will be greatly appreciated. Thank you. Hey I need help to obtain the requested javascript's query string. Example: Code: <script type="text/javascript" src="script.js?v=123"></script> How can I use that query string inside script.js for example like Code: var v = 'The code to get the query fragment'; alert(v); // alerts '123' Thank you. - DJCMBear Code: <head>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.0/jquery.min.js"></script>
<script>
function getQuerystringNameValue(subid)
{
var winURL = window.location.href;
var queryStringArray = winURL.split("?");
var queryStringParamArray = queryStringArray[1].split("&");
var nameValue = null;
for ( var i=0; i<queryStringParamArray.length; i++ )
{
queryStringNameValueArray = queryStringParamArray[i].split("=");
if ( subid == queryStringNameValueArray[0] )
{
nameValue = queryStringNameValueArray[1];
}
}
return nameValue;
}
</script>
<script>
function getQuerystringNameValue(uid)
{
var winURL = window.location.href;
var queryStringArray = winURL.split("?");
var queryStringParamArray = queryStringArray[1].split("&");
var nameValue = null;
for ( var i=0; i<queryStringParamArray.length; i++ )
{
queryStringNameValueArray = queryStringParamArray[i].split("=");
if ( uid == queryStringNameValueArray[0] )
{
nameValue = queryStringNameValueArray[1];
}
}
return nameValue;
}
</head>
And trying to pass into this link but its not working. Code: <map name="Map">
<area id="link-connector" shape="rect" coords="33,466,349,530" href="http://www.linkconnector.com/ta.php?lc=125601055059003882&atid=" + getQuerystringNameValue("uid") + "&ptid=" + getQuerystringNameValue("subid") + "&lcpt=0&lcpf=3">
</map>
<body>
Reply With Quote 01-13-2015, 07:21 PM #2 rnd me View Profile View Forum Posts Visit Homepage Senior Coder Join Date Jun 2007 Location Urbana Posts 4,497 Thanks 11 Thanked 603 Times in 583 Posts you can't use script in the middle of an attrib like that, you need to hard-code that url in whole, or build the string in JS and apply it all at once. Hello Friends... I am working on parsing the querystring using javascript So I have successfully parsed the querystring & also replace the special character+ but I want to display the querystring in the TextField Control So how to implement it Please guide me.... Hi all, I would really appreciate it if someone could help me with this problem. I have some JavaScript code that encodes (escapes) a string (typically a URL) - I then want to pass the encoded string to a php page via a querystring. Trouble is, the querystring doesn't contain the correct encoded string! For example - If we assume the string I want to pass contains the data : tester My encoder, encodes this as : %74%65%73%74%65%72 When the code then passes this in a query string to, for example, code.php the querystring comes out as follows : code.php?encstring=tester The following is the JavaScript code that encodes, shows an alert box with the correct encoded string in it and then calls the code.php with the encoded string attached. Please help? What am I missing here? Code: NOTE: variables: os is the input string and ns is the encoded string. Code: <script type="text/javascript">
var os='tester';
var ns='';
var t;
var chr='';
var cc='';
var tn='';
for(i=0;i<256;i++){
tn=i.toString(16);
if(tn.length<2)tn="0"+tn;
cc+=tn;
chr+=unescape('%'+tn);
}
cc=cc.toUpperCase();
os.replace(String.fromCharCode(13)+'',"%13");
for(q=0;q<os.length;q++){
t=os.substr(q,1);
for(i=0;i<chr.length;i++){
if(t==chr.substr(i,1)){
t=t.replace(chr.substr(i,1),"%"+cc.substr(i*2,2));
i=chr.length;
}}
ns+=t;
}
alert(ns);
window.location = "code.php?encstring="+ns;
</script>
Here is my code Code: function copy_grid(from,to)
{
var copy_from = from +"_24_product_cost"; // in this instance from = grid1_White
var copy_to = to;
var tmp_field = getElementById(copy_from).value; // ERROR: getElementById is not defined
}
document.product.grid1_White_24_product_cost.value // works as expected but I wanted this to be dynamic. Any ideas? Say I had a bunch of elements with id names "id1", "id2". "id3" etc. Then say I had a function that adds a click handler such that when you click these elements it gets the id name with this.attributes[1].nodeValue;. Then say I had a bunch of arrays with the same names as the ids var id1 = ["data", false, 45]; var id2 = ["otherdata", true, 15]; var id3 = ["otherotherdata", null, 65];. How would I set a variable "currentid" to the array with the corresponding name as the id name? I guess the underlying question is, how would I convert a string to a variable name?
How can I use a string to select a variable? E.g. Code: function load_menu( menu ) {
//Availible menus
var login = Array('Login','Register','Recovery');
var settings = Array('Profile','Account','something');
//Menu container ID's
var cons = Array('menuitem1','menuitem2','menuitem3');
for ( var i = 0; i < cons.length; i++ ) {
document.getElementById(cons[i]).innerHTML = menu[i] ;
alert(menu[i]);
}
}
"menu" is "login". menu[i] should reference the "login" variable and then put one of the values for the login variable array in its place. If you understand what I mean? So if menu is settings then the settings array would be used. Hi all, I am having a hard time on this, can you help pls? I have this code? $("select[name=objeto"+contcheck+"]").change(function(){ $("select[name=titulo"+contcheck+"]").html('<option value="0">Carregando...</option>'); where contcheck is a counter, so a number. It does not work at all, any help how to concatenate string and variable like this: objeto1 objeto2 objeto3 .... and so on. Thx. I am making a function where I need to know whether the input is a variable with a string value var foo = "bar"; Function(foo) or if it is a string, wherein it would be the name of an object object = { ThingsInside: function(){code} } Function('object') Code: function Function (object){
if(object is a string){
do this
}
else if (object is a variable with a string value){
do this
}
else{
do something else
}
Because they would be both passed by value, I'm not sure how or if there is a way to tell as they would both just appear as string inputs, right? Hi there, I've got a div with an id of messages - It is essentially a chat system however chat usually adds messages to the bottom of a list which means the messages do not get pushed down while you are reading them. This system instead adds the messages to the top. I need a way of finding the current scroll position so that when a new message is added the scroll remains in the same place. I've been trying to work this out for a while now, any advice or code would be greatly appreciated. Is this possible? Code: String.prototype.trim = function(){
return this.replace(/^\s+|\s+$/g, "");
}
var myStr = " Hi what's up? ";
myStr.trim();
alert("{" + myStr + "}"); //will result in the original string, not the trimmed version
It's possible with numbers: Code: var myNum = 10; myNum++; alert(myNum); //11 Hi All, Am new to Javascript but fluent in C++ and other languages, I have a query, i made a global variable to hold string information, can the value of this string be assigned to a form input field value? I mean in the 'default value sense' I am just wondering if there is any syntax to accomplish this. EG in my javascript i have the string nameVal; It is a global variable, i would like to know if it is poosible access its value for use in the line below shown with italics, or is it basically always a case of 'type the value in manually yourself' and then rely on events functions to update the field thereafter? Code: Name: <br><input type = "text" name = "nameField" size = "50" value = my string val here onChange ="this.value=storeVal(this.value, '0')"></input></br> |
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