# Increment Number In String?

Jun 27, 2011

I have a string "Slide1.jpg"

I need to increment it by 1 to say "Slide2.jpg"

I have split and sliced but I keep getting SlideNaN.jpg

Rather then fix my mess of code... There has to be a simple way of doing this..

## Create A Script That Will Increment A Number By 0.01?

Feb 12, 2011

working on building a website at the moment. and i need to create a script that will increment a number by 0.01, then stop and decrease by 0.03, then increase again by one. I wrote code to increment by 0.01 continuouly but now i can't stop it. and change to decreasing

<script type = "text/javascript">
num = 0.87;
var tim = 0;

[code]....

## Number.toFixed() Does It Convert Number Into String?

Jul 7, 2011

When I used toFixed() method on a number, I thought that this method round a number to a specified approximation, but I got a surprising result, the number became string! 15.23689.toFixed(2) ==> "15.24". So does it convert the number into string?

## Getting Only Number Value From A String?

Oct 7, 2009

I have a string stored in a variable var = "4.25 houses".

I would like to only extract the currency value, ie "4.25" from this. Is this possible? Also I would like to divide and multiply the new variable I get... does this number need to be converted or something?

## Month Number To String

Jul 20, 2005

What would be the best way to convert a month number to its corresponding
string? I.e, 3 -> 'March'. Is there a builtin function or must I use a
lookup table or something?

## Convert Number To String?

Feb 25, 2009

How to convert Number to String in Javascript.

## How Do I Convert A Number: From Dec To Hex Into A String?

Sep 9, 2006

Now I need to convert a number(decimal) into a hex.string. I want to pass my blurit() two colors and have it start at color one and step its way to color two based on a determined step. I need to convert the new color to a hex string to be used to control the color of text. This is a rough example of what I am doing:

function blurit(color1, color2) {
colorstep= (color2-color1) /10; clr=color;
for (lp=0; lp<10; lp++) {
test.innerHTML+= '<font color="#' +dex(clr) +'">'
clr+= colorstep;
}}

## Extract The Number From This String

Mar 4, 2010

I have a string, an example below, I want to extract the number from it.

Code:
<p class="the-price">€15.00</p>
<p class="gbox"><!--<a href="#"><span>Arrange<br>
Cover</span></a>--></p>

## Convert A Number To A String?

Apr 3, 2010

I'm trying to write code to swap images in a list. It's going to be a star rating control that highlights stars as you hover over a star. each image in the list has an onmouseover="highlight(this)" function and a unique id of 1 - 10.

Code:
function highlight(star) {
var num = Number(star.id);
for (i = 0; i < num; i++)

[Code].....

I'm trying to convert the number 'i' used by the for loop to a string so it can be used by the getElementById() method to select the stars to be highlighted. But my intellisense is telling me there is a problem with that line. I tried

var id = String(i+1);

but this didn't work either.

what have I gotten wrong?

## Search Number In A String?

Dec 1, 2011

I have a string:

Code:
var str = "6, 14, 2, 23, 121, 137, 342, 453, 543, 4, 762"
Var num = 2;

I want to check if num exists in str.

Is there any javascript function to do this?

## Finding A Number In String - RegExp

Aug 13, 2005

How can I check if a number exists by itself in this string by using
the RegExp object?

var mystring = "11,111,01,011";
var match = "1";
var re = new RegExp( match );
var isFound = re.test( mystring ) );

Running this code returns 'true' which is not what I want since number
one doesn't exist by itself. I need to use the "match" variable since
it will change depending on user input.

I can only get it to work without variables in the expression. E.g.

var re = new RegExp( /1/ );

## Why Does 1+1 Equal 11? Or How Do I Convert A String To A Number?

Sep 2, 2006

Javascript variables are loosely typed: the conversion between a
string and a number happens automatically. Since plus (+) is also
used as in string concatenation, `` &#391;' + 1 '' is equal to `` &#3911;' '': the
String deciding what + does. To overcome this, first convert the
string to a number. For example:

## Recognize Number Inner A String's Array

Jun 12, 2007

if I have an array where the number are write in string format, how can I recognize when a string is in realty a number? example if I have this:

"50"
"house"
"light"
"100blue"
"yellow20"
"-100"
"20,5"

how can with a cicle to extract only:

50
-100
20,5

?

## How Do I Convert A String Integer Into A Number?

Jul 20, 2005

I want to turn the string "100,144" to numbers, to use for
resizeTo(100,144) <--- here.

## Text Field Value - String Or Number

Nov 24, 2011

How to check that a text field is a string not a number with javascript? Therefore,if the field is a number then I want to display a message that contain "You must enter a string".
var str = champ.value;
if (!(isNaN(str))) {
I tried the previous code but it does not work.

## RegExps : Grab Number Inside Of String

Oct 18, 2007

I'm looking for a way to grab a number from a string, although this number
is not at either end of the string.

Here is the string in question: var el = "v4Function_Name('argument3')"

Here is a substring that returns the number ( the 3 ) successfully...
var number = el.substring(el.lastIndexOf("ent")+3,el.length-2);

Seems very ineffecient to do it this way, and better to find a lean elegant
way using replace(); How does one go about getting a value inside of a
string with regular expressions? .. or is there a better way?

Here are a couple of the many expressions I have failed with...

var pat = /^[^ent][0-9]*\$"/;
var pat = /v4Function_Name('argument([^0-9]+)'/;
var number = el.replace(pat,"");

## JQuery :: Expectetd Identifier, String On Number?

Jan 6, 2010

Got a bit of a weird issue in IE 8 with this code:

jQuery.getJSON
"/v.f", { do: "wiki_ajax", id: jQuery
this
.val
, field: "1" }, function

[Code]...

## JQuery :: Determine Number Of Words In String?

Jul 23, 2009

Any jquery plugin can check number of word in a string instead using of .length?[code]

## JS To Accept Only A Particular String To Start With An Alphabet Or Number Only?

Jun 4, 2009

I have a JS function which checks whether the directory field value entered starts with an alphabet or number only. Following is the code using regular expression.

function testpw() {
var un = document.getElementById("dir").value;
if (/^[^A-Za-z0-9]/.test(un)) { // only a-z0-9 allowed as first character

[code]......

method which only accepts "/ktp/knas/" as the starting value and anything after that. ie it should accept /ktp/knas/*, rest everything is not accepted.

## Converting String (Feet - Inches) Into Number

Aug 11, 2010

I have an Adobe pdf fill-able form field that requires a distance computation using javascript. One of the values needed in the computation is in the format of a string as feet - inches (for example: 4'-10"). I need to convert this into a number to use to complete a computation. Any code snippet or ideas on how to do this.

## Function Which Search Number From String Input?

Feb 19, 2011

I am working on form validation, i want to validate "Name" input field value . I want that in "Name" input field no number can be input.

Is there any function which search number/s from string ?? i.e if user inputs any number in that field with string i can display error message(Name can't be alpha numeric).

## Convert The String In Number And To Save It Into A New Variable?

Mar 2, 2010

I used the command toUTCString() with a Date() object and now I would like to extrapolate the hour, to convert the string in number and to save it into a new javascript variable.Esampre:

PHP Code:
<html>
<body>
<script type="text/javascript">[code]....

because 'ora' is not rigth when I use DST in my script.I am writing a code into a file .php then I can use php as well into the script.

## IE 7 Expected Identifier, String Or Number Eror

Aug 21, 2011

IE 7 is throwing a JS error and I can't figure out why (probably because I am new to JS). FF and IE8 do not throw any JS errors. The JS error I get looks like this:

Line: 42
Char: 3
Error: Expected identifier, string or number
Code: 0
URL: http://dev.emsketch.com/

I'm not sure which JS file this error file is referencing.

## Regular Expression Checking String For Port Number?

Oct 28, 2010

I have got this xml file which has a background params which is <background>igmp:

{theme.background_video_ip}:1234</background>.

I have done the validation to check if the igmp protocol is used like this

if (clientSpecificData.background.substr(0, 7) == "igmp:") {

Right now I am trying to find out how I can use regular expressions to check whether a port number is used at the end.

## Increment A Value Each Day By One?

Jan 29, 2010

For a real estate website, I want to create a script which will tell visitors how many days a property has been on the market. For example say the property was posted on the site on 1/1/2009. I want the site to say "This property has been on the market for 394 days." .

## Increment Var By 1 In Loop?

Apr 6, 2009

I have a loop that is running and I am trying to increment a number by one each time. Here is what I am doing, but each time it just writes out 1 for the value.

var i=1;
Start of Loop
document.write(i);
var i=i++;
End of loop

It just writes out 1 each time though.