JavaScript - Regular Expression In Javascript For Validation

I have the following regular expression to test the validity of an input date:

Code:

([0-9][0-9]|[0-9])[\s/-]([0-9][0-9]|[0-9])[\s/-]([0-9][0-9][0-9][0-9]|[0-9][0-9])

It should allow 1 or two digits for the day of the month, then a separating character (" ", "/" or "-"), then 1 or two digits for the month, then 2 or 4 digits for the year.

Unfortunately it will accept anything above 2 digits for the year, which I understand why is happening but don't know how to fix! Can anyone help?

Thanks!

Dear experts

I have following codes

Var re=/(\d){4}-(\d){7}/;

When I test this string
0300-685706263

It says TRUE

But I validate this string exactly

0300-6857062

Please help

Hello,

How can i validate string with alphanumeric, space, dash and dot in regular expression ?

can anyone explain me in detail what this regular expression mean...
each and every part of this sentence:
var baseRegex = new RegExp("^(?=.{6,})(?=.*^[A-Za-z]([a-zA-Z0-9_-]+)$)(?=.*[A-Z])");

Hi,
Can someone fix the following regular expression? It is validating every thing expect YEAR. It only matches first 2 digits for year instead of 4. I want it to be 4 digits for a year. It returns true if I put 12/25/19.I want it to return false for the above date.

Code:

var RegExPattern = /^(?=\d)(?:(?:(?:(?:(?:0?[13578]|1[02])(\/|-|\.)31)\1|(?:(?:0?[1,3-9]|1[0-2])(\/|-|\.)(?:29|30)\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})|(?:0?2(\/|-|\.)29\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))|(?:(?:0?[1-9])|(?:1[0-2]))(\/|-|\.)(?:0?[1-9]|1\d|2[0-8])\4(?:(?:1[6-9]|[2-9]\d)?\d{2}))($|\ (?=\d)))?(((0?[1-9]|1[012])(:[0-5]\d){0,2}(\ [AP]M))|([01]\d|2[0-3])(:[0-5]\d){1,2})?$/;

Thanks

I am trying to find the correct regular expression (or an alternate) for if a user enter any more than 1-3 digits in the age field of a form it produces an error message. I already have the error set up, just the correct coding to produce the 1-3 digit condition.
Thanks, KWIKCUCUMBER.

I want to validate a form with only numbers and "$" sign.
so far i know this
Code:

		currencyValue = which.value;
		var re = /^[0-9]*$/;
		if (!re.test(currencyValue)) {
		    alert("Value must be all numberic charcters, non numeric's removed from field!");
		    field.value = field.value.replace(/D/g,"");
		}

but how do I also add the "$" sign as ok?

Hi all, I have this line (part of a larger function that converts a few common BBCodes into HTML) and I don't know how to do one thing. First, here's the line:

Code:

str.replace(/\[color=(.*?)\](.*?)\[\/color\]/gi,'<span style="color:$1;">$2</span>');

It works fine if I do this (I'll mis-spell "color" to prevent messing up the board):

THIS works fine.....
[colur=#ff0000]Red Text[/colur]

But of course, if I do this:
[colur="#ff0000"]Red Text[/colur]

It doesn't work.

What I need to do is take the $1 variable, AFTER it's captured, but BEFORE it's used, and strip out any quote marks I find. I may want to also strip out, then add the hash sign (#) also, then put it back so it works with or without the #.

While I'm at it, I'll also probably detect color as a hex string vs. a keyword (so that both "#ff0000" and "red" work) and probably also support the rgb() method.

But first I need to know how to access and modify $1 BEFORE it's used. I'm hoping that I don't need to use two lines (or two separate .replace() calls).

Thanks!

-- Roger

I want to find in all occurrences of #(...) in a string (what is between the parentheses is unknown. At the moment I have
Code:

str.match(/#\(.*\)/)

The problem is, I want to be able to have multiple of these in one string, like "#(hello) good #(world)", but RegExp takes me from the first '#', to the last ')'.

I want to allow nested parentheses, so I am thinking that there should be away to not let it look past the second '#'. How would I do this?

The following code removes the brackets and a dash from the string variable.
I am interested why there are \ in front of each bracket in the regular expression regexp?
The code work fine if regexp would be /()-/g;
So why then / is necessary? I would appreciate a lot with someone could explain.
Thank you very much.

<html>
<head>
<title>Regular Expressions</title>
<script type="text/javascript">
var string="(304)434-5454";
regexp=/[\(\)-]/g;
document.write(string.replace(regexp, ""));
</script>
</head>
<body>
</body>
</html>

I'm trying to convert a line using a regular expression.

The re I am using is this: <div><span>&middot;<span>[\s*]<\/span><\/span>([^<]*)<\/div>

I'm using the expression in the replace function like this:

html = html.replace( /<div><span>&middot;<span>[\s*]<\/span><\/span>([^<]*)<\/div>/gi,'<li>$1</li>') ;

the line of code I am changing is like this:

<div><span>&middot;<span> </span></span>Illness - where a pupil is too ill to leave the house</div>

eg it should strip out the code and leave <li>Illness - where a pupil is too ill to leave the house</li>

it works fine here http://www.regular-expressions.info/...ptexample.html
but when used with the replace command it does not?

Can anyone see the problem?

(I'm trying to convert bullet points from word)

Darren

Hi all,

As I scan each line of data that was entered into a textarea box, I need to call a function once I come across a line that starts with the following:

Code:

"0 B3C  0020365077 0045740301 3 09FEB2008 09MAR2010 " (without quotes)

I have created the following legend to help with the creating a regular expression that will validate when I have found a line that needs further processing:

N - number
L - letter
A - letter or number
S - space

So using the above legend, the first 51 characters of the line that I need to validate should always be in the following format:

Code:

"NSAAASSAAAAAAAAAASNNNNNNNNNNSASNNLLLNNNNSNNLLLNNNNS" (once again, without the quotes)

I have been reading a few articles on JavaScript regular expressions but am a bit lost at this point as how to start?

Im sorry im tired and cant think how to put this.

how do i make \\1 and \\2 = margin-bottom[^;]+); and margin-top[^;]+);

Sorry again,

Regards.

Code:

var regep = /margin-bottom:([^;]+); margin-left:0px; margin-right:0px; margin-top:([^;]+);/;

elementCSS = elementCSS.replace( regep , "margin-bottom:\\1; margin-left:auto; margin-right:auto; margin-top:\\2;");

Hi guys,

May i know how to write this string (1,2,4-6,9,11-13,20) in regular expression?

Restrictions:-
1) Only numbers, comma and hyphen are allowed
2) no spaces are allowed

Thanks much!

I have a function that changes the label on a set of labels with similar "for" fields. Somehow, the matching is only matching every other label. I suspect I must be missing something obvious.

The goal is to change the text of a set of radio buttons to either "top" and "bottom" or "left" and "right" depending on orientation.

Code:

function ChangeLabels(orientation) {
	var lefttop = 	"Left";
	var bottomright = 	"Right";
    var lbls = document.getElementsByTagName("label");
    var lefttopregex = new RegExp ("Field6_[0-9]+", "gi");
    var bottomrightregex = new RegExp ("Field20_","gi");
    
    
    if (orientation == "Vertical") {
    	lefttop = "Top";
    	bottomright = "Bottom";
    }

  var forvalue = "";
  for (var i=0,k=lbls.length; i<k; i++) {
     	forvalue = lbls[i].htmlFor;
    
   	if (lefttopregex.test(forvalue)) {
      		lbls[i].innerHTML = lefttop;
    }
   	if (bottomrightregex.test(forvalue)) {
      		lbls[i].innerHTML = bottomright;
    }
     
  }	
	
}

And here is the HTML of the labels.

Code:

<li id="fo1li6" class="     ">
<label class="desc" id="title6" for="Field6_0">
Left/Top
<span id="req_6" class="req">*</span>
</label>
<div>
<input id="radioDefault_6" name="Field6" type="hidden" value="" />
<span>
<input id="Field6_0" name="Field6" type="radio" class="field radio" value="Dogs" tabindex="20" onchange="handleInput(this);"  checked="checked" />
<label class="choice" for="Field6_0" >
Dogs</label>
</span>
<span>
<input id="Field6_1" name="Field6" type="radio" class="field radio" value="Pineapple" tabindex="21" onchange="handleInput(this);" />
<label class="choice" for="Field6_1" >
Pineapple</label>
</span>
<span>
<input id="Field6_2" name="Field6" type="radio" class="field radio" value="Leaves" tabindex="22" onchange="handleInput(this);" />
<label class="choice" for="Field6_2" >
Leaves</label>
</span>
<span>
<input id="Field6_3" name="Field6" type="radio" class="field radio" value="Cat" tabindex="23" onchange="handleInput(this);" />
<label class="choice" for="Field6_3" >
Cat</label>
</span>
<span>
<input id="Field6_4" name="Field6" type="radio" class="field radio" value="Star" tabindex="24" onchange="handleInput(this);" />
<label class="choice" for="Field6_4" >
Star</label>
</span>
<span>
<input id="Field6_5" name="Field6" type="radio" class="field radio" value="Bamboo &amp; Sun" tabindex="25" onchange="handleInput(this);" />
<label class="choice" for="Field6_5" >
Bamboo & Sun</label>
</span>
<span>
<input id="Field6_6" name="Field6" type="radio" class="field radio" value="Bamboo" tabindex="26" onchange="handleInput(this);" />
<label class="choice" for="Field6_6" >
Bamboo</label>
</span>
<span>
<input id="Field6_7" name="Field6" type="radio" class="field radio" value="Sun &amp; Moon" tabindex="27" onchange="handleInput(this);" />
<label class="choice" for="Field6_7" >
Sun & Moon</label>
</span>
<span>
<input id="Field6_8" name="Field6" type="radio" class="field radio" value="Fleur de lis" tabindex="28" onchange="handleInput(this);" />
<label class="choice" for="Field6_8" >
Fleur de lis</label>
</span>
<span>
<input id="Field6_9" name="Field6" type="radio" class="field radio" value="Dragonflies" tabindex="29" onchange="handleInput(this);" />
<label class="choice" for="Field6_9" >
Dragonflies</label>
</span>
<span>
<input id="Field6_10" name="Field6" type="radio" class="field radio" value="No Design" tabindex="30" onchange="handleInput(this);" />
<label class="choice" for="Field6_10" >
No Design</label>
</span>
</div>
</li>