Obtain Length Of String Variable?
Aug 29, 2010How can to obtain length of string variable, for example if I have:
var msg = 'hello world!';
Does it exist a method to count string characters?
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Chop Up A String To Obtain Just The Filename Of An Image
Feb 9, 2006I need to chop up a string to obtain just the filename of an image. Lets say the image source is /images/thumbs/image.jpg. Using the DOM I have the source of the image in a variable called 'source'.
What I want to do is manipulate it so that it just returns the file name image.jpg. How can I achieve this? I tried split() to see if I could split it into an array using the / as a separator, but this didn't work.
Obtain A Variable And Use It ?
Dec 21, 2010I want to submit a form but it requires a code that is generated by every session (not the php session type). What i'm looking for is for a piece of code that fetch the session code and set it as a variable that can be called in JS.
I know that exists in PHP the cURL that it's able to retrieve the code and set it but i don't know how to start...
String Length?
Aug 10, 2006The following function takes three different fields (which combined make up a phone number) and tests it to make sure that all the characters entered are integers. If this is true, it sets form.Phone.value = entirephonenumber. I would like to incorporate an additional test which, after determining that all characters in the string are integers, checks to make sure that the string length is 10. If it is less than 10 or more, I want the entire function to return false and display an error message (the same one is fine..) Code:
View 2 Replies View RelatedChange The Length Of A String?
Mar 16, 2009i have a xml file where i do the following query:
entry_03_title=doc.documentElement.getElementsByTagName("entry")[2].getElementsByTagName("title")[0].firstChild.data;
now having the variable "entry_03_title" i would like that javascript do this:
if(entry_03_title.length>30) entry_03_title.length=6
in other words if the title is bigger than 30 chars long make it 6 chars, but this doesn't work.
Count Length Of String
Jan 10, 2003Having trouble with this simple code...
if (form.SSN.length != "9") {
alert("SSN must be nine digits long");
form.SSN.focus()
return false; }
It always displays the alert even if it does equal 9 digits long. I'm new to javascript so if this is a really simple error just go with it....
Call A Function Like String.Length?
Aug 17, 2010How can I call a function in javascript like code...
View 6 Replies View RelatedGet The Length Of String Function Not Working
Aug 16, 2010i used the String.length(string) function in javascript to get the length of string but nothing happened. It doesn't give me a value when i tried to view the result using an alert function. Actually, this kind of problem does not only exist with the length function, it's also the same with the trim(). I have not tried using other functions but perhaps it won't also work. What could be the possible reason for this?
View 1 Replies View RelatedIE Reporting Wrong String Length
Aug 22, 2007This is quite mysterious. I have several list items like this:
HTML Code:
<li>Private</li>
I am looping through them all trying to get the text inside each list item for a comparison with a string from elsewhere.
Javascript Code:
var coresubmenu = document.getElementById('core').getElementsByTagName('li');for (var i = 0; i < coresubmenu.length; i++) { coresubmenu[i].onclick = function() { if (this.firstChild.nodeValue == 'Private') { // fail } alert(this.firstChild.nodeValue.length); // alerts 8 }}
IE alerts one more than the actual length in all cases. Google hasn't brought anything up for me on this one - any ideas?
Variable Scope And Crossing Functions - Resize Plugin In Order To Obtain The Varying Computed Width Of An Element When The Window Is Resized
Mar 23, 2010I am using Ben Alman's JQuery resize plugin in order to obtain the varying computed width of an element when the window is resized (the element in question is a page wrapper that exhibits the expand-to-fit behavior of a block box, and it's computed width is obviously influenced by the resizing of the window. Essentially, what I need to be able to do, is to reference a variable that is defined in a .resize() function ('width_page') in a seperate .each() function.
[Code]...
I now understand that variables can't cross boundaries like in the example above, which leaves me a little stuck. I also understand that this is specific to the context of the .resize() function, and that it can't be taken out of it without using an element selector. Is there some way I can call the .resize() function in my .each() function?
String.Length Function Returns Undefined?
Mar 27, 2011When I run the following code, the .Length function returns "undefined."
var strTest = 'test';
alert(strTest.Length);
Using the typeof function, I know that JS is treating the variable as a string.
JQuery :: Live Output On Database String Length
May 28, 2011How would I go about outputting something when a database value is being changed?
e.g. If im typing in a text field, which is saving what ive typed every time i keyup into a database field, it then shows on another page on another user computer as "User is typing something in field X"?
If no typing is happened, i.e. the database field value is not changing, nothing is echoed out.
It would also be cool to have something show "User is deleting text from field X" when the field value is getting shorter.
In pseudo code, something like if the value of database string is bigger than 100ms ago, echo out "user is typing something in", and conversly, if string is getting shorter echo out "user is deleting stuff".
Using New Keyword With Variable Length Arguments?
Dec 22, 2009I want to use the new keyword to instantiate an object. The catch is I want to pass in variable length arguments.
Given:
function Foo () {
this.args = Array.prototype.join.call (arguments);
}var args = ["arg0", "arg1", "arg2"];
The following don't work (though I understand why):
new Foo.apply (null, args);
new (Foo.apply (null, args));
(new Foo).apply (null, args);
How to do what I want without modifying Foo's source code?
Passing Variable-length Argument List From One Function To Another
Dec 8, 2006Given the following code:
var xf2;
function f1()
{
if (document.createElement && document.body && document.body.appendChild) {
xf2 = new f2(arguments[]);
}
}
I am getting a syntax error in the "new" statement following the [].
How do I pass the variable-length arguments list received by f1 on to f2?
Converting Int To String - Variable To Concatenate It As A String To Find An Input Box
Jun 26, 2010I have a for loop: Code: for( var i = 0; i < aInput.length; i++ ) I want to use this i variable to concatonate it as a string to find an input box
Code:
var j = i;
var qualname = "discountqualifier" + j;
qualname.toString();
if ( inputName == ( qualname ) )
{
Assuming I have a input box named discountqualifier0, discountqualifier1, discountqualifier2 etc...
Get A Variable's Name As A String?
Mar 1, 2006I'm writing a debugging script and I'm passing a function an object to iterate through:
myObject = {a:1,b:2}
debug(myObject);
I'm wondering if there is any way to get the variable's name as a string("myObject"), so something like a .name property:
function debug(obj) {
alert(obj.name); // would alert "myObject"
}
Is there any way to do this?
Getting Variable From Query String
Jul 23, 2005I need to look at the url, if a variable is present in the query string.
so, if my address bar looks like:
Search A String With A Variable?
Mar 29, 2009I am trying to search over a string of text to recognize any matches.Problem is that the string of text I am search with is in a variable and I don't think its working to well when putting it into a regExp.Here is what I have.
var newMessage = /myajax.responseText/;
var previous = document.getElementById("chat").innerHTML;
var matchPos = previous.search(newMessage);
[code]....
Convert String To Variable Name?
May 11, 2011Say 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?
View 1 Replies View RelatedConverting CSV To String Variable?
Aug 2, 2011I have a javascript program that currently takes the contents of a *.txt file and converts it to a string-type variable using a hidden iframe.
For my pruposes it would be much nicer to read a *.csv file instead, however the method I'm using creates the "open/save file" pop-up window.
All files are client-side and in the same folder on one computer; this is NOT server-side or internet-based. It is simply javascript used in an HTA file as programming code. The *.csv does not need to be edited, just read.
I need to know how to convert the text of this *.csv file into a string variable. I have heard of using "xmlHTTPRequest (AJAX)" but am not familiar with how to use this.
Getting Text String Into Variable?
Dec 28, 2010I'm having trouble getting a text string into a variable:
HTML Code:
<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Strict//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd'>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head>
[Code]...
I'm using the alert to confirm if I've managed to get the time ok from the html, it should when working display the static time but currently displays NaN which AFAIK means that javascript is getting something from the HTML but it's in a form that it can't work with.
I know that the HTML validates fine, the time display is output from PHP. The intention is that PHP will output the time, if javascript is available then the javascript will take the static time and turn it into a ticking clock.
I'll look into the main guts of the clock script at another time, right now I need to get the basics working. I need to do it something like this way as I don't want to have any javascript embeded in the HTML, I want to have the javascript in external files.
Convert A Variable Into A String?
Jan 19, 2011I am designing a feedback page for my website and have carried info through the url to the feedback page from a previous page. This url contains a name of an individual, in between two symbols = and &
The url of the feedback page looks something like this:[URL].... First, I have used a form to display the information so that the user can see who they have selected, ie. extract the first and last names from the url. (The script following the form extracts the name from the url so that it can be displayed by the form, not exactly sure why it does so in this particular order but it seems to work so far).
This is the code I have used to do this:
<FORM NAME="SWnamefunc">
<div align="left">
<INPUT TYPE="hidden" NAME="yoyo" SIZE="35">
</div>
[Code]...
Change String Into Variable Name?
Jan 28, 2010So I am receiving a string with a name and I want to turn that name into a variable name.
Code:
var strName = "Name";
I want to be able to use Name as a variable.
Add The Variable To The Query String
Jul 5, 2011having trouble getting a query string/URL to append a couple of variables from a function (well, trying to get ONE working). Basically, once a user makes a selection from a form, I want the script to add the variable to the query string, which is then sent off to a PHP script. If I manually enter the 'social_housing_type' as a number in the query string, it executes properly, I just can't get it to do it from the form.
[Code]...
Select Variable With String
Jul 24, 2010How can I use a string to select a variable?
[Code]...
menu[i] should reference the "login" variable and then put one of the values for the login variable array in its place. So if menu is settings then the settings array would be used.
Simple Variable/string Question
Apr 3, 2006I have three drop down menus that when changed call a simple js
function, passing a value i.e.
<SELECT name="Team" onChange="change('national');">
the function defined at the beginning is
function change(which) {
current = document.premForm.Team.selectedIndex;
document.images.premShirt.src = "assets/shirts/"
+document.premForm.Team[current].value + ".gif";
}
the var 'which' is being passed succesfully, but i can't work out how
to change
document.premForm.Team.selectedIndex;
into
document.whichForm.Team.selectedIndex;
depending on what value the function receives. My 3 forms are called
premForm,nationalForm and worldForm