Ive just started to learn JavaScript, and I have trouble to write JavaScript code which checks a string to contain at minimum one uppercase letter, one lowercase letter one number and one special character with no white space allowed.
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I'm trying to convert only the last letter to an UpperCase letter. Example, I would need christmas to view as "christmaS", last letter to capitalize.
My code:
I have this hosting application on my website and people just seem oblivious to the fact that right next to the password input it says: "requires one uppercase letter, one lowercase letter, and one number"
I've tried to take the time before to locate a script, but I've never found a good enough tutorial.
I am currently trying to build a new function in javascript that is supposed to handle a string of text. The idea is that it should find the lowercase letters and uppercase letters in a string and then swap them.
Meaning all lowercase letter becomes uppercase letter and vice versa.
So i am just asking if someone could point me in the right direction or give some tips. I've currently been reading about the toUpperCase(); and toLowerCase(); functions and i am fairly confident i know how to use them for switching, however i still need a way to find the lower , upper character in the string so i later can switch them.
How can I create a new element around the first Letter of a dynamical outputted string? I need this because I want the first letter in another color.
[Code]...
below is my code and i cant seem to figure out how i can loop the string and find the location of letter "a" in the string and display it like "1 3 17" ... i cant seem to figure out what i am doing wrong in the loop and keep getting "1 1" ... Thanks before hand!
<html>
<body>
<script type="text/javascript">
[code].....
I need to change one letter in a text string, but near as I can figure out, I can't just do this:
TextString[8] = "X";
Is that possible, or do I have to break the string and rebuild it into a second string?
I have the string in Javascript and now i want to make that string letter case. Means each first letter in caps of the string. for e.g. if following string is passed Is there any ready made function in javascript or can any one provide me reference for the same?
View 2 Replies View RelatedI'm developing a web app and I want to validate a users input on a form. I need a regular expression to validate a string which must begin with a letter (i.e. A-Z or a-z) and must have 5 numbers (0-9) after it....
View 1 Replies View RelatedI have a simple example below showing how when I pass in the value of the value attribute of option node, and then use if operator to check whether parameter is a string or not, even though it's a string, it converts it to false boolean and triggers the else statement rather than calling a function.callback should be a string so why is it saying otherwise?
View 3 Replies View RelatedI have this, VB.Net code..how can i do exact same thing in javascript?
How to check if some char in textbox contains one of the ones in string "allowedChars"
i need a check that can go through a string to see if it contains any numbers.
View 12 Replies View RelatedFunction findsometing()
(
var myString = 'results' + '<BR>'
[code]....
I have thought about using the standard email checker pattern but we have had problems in the past so looking to check if the string follows these simple rules.
has no spaces, has a character/s at the start followed by an @ then has a character/s followed by a (dot) then another character/s
i.e
a@a.a
aa@aa.aa
aaa@aaaaaaaaa.aaa
i am not sure how the standard pattern works but feel that it may be to complex which causes some email address to fail.
So I want to be able to check the last 15 characters of a string for either <br /> or a space. I know how to do this with PHP but I have no clue how to do this with Javascript and Google is failing me. Could someone point me in the right direction?
Example string: var string = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."
I'm assuming this will be done with lastIndexOf but I do not know how to do it. So to reiterate, I want to check to see if either a space exists, or <br />, delete everything after that, and return the string. So the output of the example string would be...
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
I've to check if a string contains the hostname my 5 cents and it seems to work but not being at all a regex guru .....
Code JavaScript:
var re = new RegExp(window.location.hostname,'i');
alert(re.test(str));
str can be like:
[Code]...
I was just wondering how to go about checking the content of a string to see if it matches a set criteria?
For example, if I want to make sure somebody enters a date as mm/yyyy, how do I check to ensure there are:
2 numbers between 1 and 12 before the /.4 numbers between 2005 and 2020 after the /.And that the / appears between the two. I know in PHP you would use a regular expression, but how do you do it in Javascript?
I am trying to check for Arabic characters in a string using Regular expressions. This should return true, as the string in the str variable is indeed Arabic character. But it returns false.
View 2 Replies View RelatedI am trying to do a pattern match and check something in a condition but cant get it to work. The first value changes and I need to check and do something if I get a hit on it.
Code:
var mydata = "?first=one&second=two&third=three";
if (mydata.indexOf("first") == "something")
{
alert("No Hit");
} else {
alert("Hit");
}
Basically I am trying to find out if first is equal to one in the mydata string. My above attempt is not working.
I want to check if the user enters alphabet or numbers only in the
text box. If the user enters non-alphabet or non-numbers, I should pop
up a message and doesn't allow the user to do that. I am using regular
expression to do the checking. But it seems it always return false...
Looking to return true if a question mark (?) exists in a given string.I was thinking of something like the following, but it obviously doesn't work.
alert('/?'.test('my?string'));
I need to know the min bandwidth for streming picture?
View 1 Replies View Related<html>
<body>
<div style="width:500; height:200; border:1px solid black;">
[code]....
I'm working on a sign-up sheet for a website. I have a text input field, and I need something to verify that the number the user inserts is greater than or equal to 3500. I already have a Javascript function in place that only allows numbers to be typed into the field so that's not an issue.
View 1 Replies View RelatedI have two text areas. I would like to prevent form submitting if the member does not enter at least 100 characters in each text area. There is no maximum number of characters, just the minimum (100 characters).
In case that he hit submit button I would like to display him a message that would inform him that he didn't enter minimum requested characters.
It would be neat if I could have the character counter below of each text area which should be decreased with each entered character.
I post a little function which will help you to convert lowerCase to UpperCase while you are typing.
Code:
<script language="javascript" type="text/javascript">
function pulsar(e,obj) {
tecla = (document.all) ? e.keyCode : e.which;
//alert(tecla);
if (tecla!="8" && tecla!="0"){
obj.value += String.fromCharCode(tecla).toUpperCase();
return false;
}else{
return true;
}
}
</script>
<input type="text" onkeypress="return pulsar(event,this)" />
If you could help me to improve this function your advice is very welcome.....
