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How do you check validations in javascript?
IRS786
- Aug 11th, 2008
for example form validation:<html><head><script type="javascript">function formvalidation(form){if (nonempty(form.req1)){if (nonempty(form.req2)){return true;}}return false...
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How to prevent a window not to be clicked or selected any way in java script?
designersub
- Sep 2nd, 2008
<script language="javascript"> function noClick(e) { if (navigator.appName == 'Netscape' && e.which == 3) { alert("no righ...
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What is the difference between java and java script?
Divya
- Nov 22nd, 2007
Java script does support inheritance. It is an object oriented language, not object based
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Redirecting a page
How to redirect a page using JavaScript
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JavaScript and JScript?
How and in what ways does JavaScript differ from JScript?
imedvedeva
- Feb 26th, 2009
The biggest difference now between Javascript and JScript are all of the additional commands that JScript supports that allow access to activeX and the local computer. These commands are intended for ...
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Javascript for Website validation
How to validate website address using javascript? User should not be allowed to enter special characters except hyphen(-).
anjumanohar
- Jul 17th, 2009
function ValidateWebAddress(field,alerttext){with(field){var companyUrl =value; var RegExp = /^(([w]+:)?//)?(([dw]|%[a-fA-fd]{2,2})+(:([dw]|%[a-fA-fd]{2,2})+)?@)?([dw][-dw]{0,253}[dw].)+[w]{2,4}(:[d]+...
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Script to check every character
Write a code to get the text box data and to check each and every char?
vasanth.kvj
- Nov 23rd, 2009
function numvalid(a) { var numStr="1234567890"; var thisChar; var counter=0; for(var i=0; i < a.length; i++) { thisChar=a.substring(i,i+1); if(numStr.indexOf(thisChar...
princesh
- Nov 18th, 2008
Read the input textCheck the length of the string Substract the length by one And then keeping doing this till end of the string.
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Render HTML inside DIV Element
Write a one line code to render HTML inside a DIV element.
hari_nowayout
- Mar 25th, 2011
In case of html, this can be done by document.getElementByID("divname").innerHTML("write any html tags u want here ");in case of JQuery, it is done by $("#divname").html("any html");
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How to use email validation in Java script.Like User can't enter invalid email address?
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Editorial / Best Answer
bicu- Member Since Sep-2005 | Feb 2nd, 2006
First of all, here is the javascript function that tests if an email address is valid.
It checks for a lot of things: to see if the email contains a "@" sign and a dot, checks to see if the @ is before the dot, and so on.<script>
function isMail(str)
{
var at="@";
var dot=".";
var lat=str.indexOf(at);
var lstr=str.length;
var ldot=str.indexOf(dot);
if (str.indexOf(at)==-1) return false;
if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr) return false;
if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr) return false;
if (str.indexOf(at,(lat+1))!=-1) return false; if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot) return false;
if (str.indexOf(dot,(lat+2))==-1) return false;
if (str.indexOf(" ")!=-1) return false;
return true;
}
// the next function will be used to validate the form. I made this as a separate function because you might want to validate more fields.
function validate_form()
{
if (!isMail(document.form1.mail.value))
{
alert("Please enter a valid email address");
document.form1.mail.focus();
return false;
}
// if the value entered is not a valid email address,
// we show a message, focus on the field and return false.
// returning false will make sure the form is not submitted
// if we got here, it means the email address is valid
return true;
// return true means that the form is submitted.
}
</script>After placing this function in the code, here is what you need to put in the form.
Let's say the form only has the email address and a submit button.
<form action="/" method="post" onsubmit="return validate_form()" name="form1">
<input type="text" name="email" value="">
<input type="submit" name="submit_button" value="continue">
</form>Ravi Maggon
- May 16th, 2011
<html> <head> <script type="text/javascript"> function check() { var filter=/^[a-zA-Z0-...
SwapnilSwapnil
- Sep 7th, 2009
There are many varieties of email validation. This one is simple, but effective.function isValidEmail(str) { return (str.indexOf(".") > 2) && (str.indexOf("@") > 0); }
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How do you get field value in javascript?
ram
- Aug 25th, 2011
Document.forms[0].MyField
Cool Swadi
- Dec 30th, 2009
You can use either 1. document.getElementById("").valueor2. document.forms[0]..value
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How do you call function in javascript?
Ranjan Kumar
- Sep 22nd, 2011
Code- span style="color: #0000ff;">"ok")
- }
salijaffar
- Feb 27th, 2009
Just write the name of the function and a pair of small brackets then semi-colon after it.example.functionName();
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Marquee tag xml
Is xml runs on html like javascript or not & also can i use tag in xml if yes then how
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Print the number in rverse order
How can i print the numbers in descending order without using looping structure in php/javascript
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How will you insert data into db2 using JavaScript?
jamesjack
- Jul 25th, 2013
Using JavaScript you can easily insert data in database
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Web Page Redirect
What are the three ways of redirecting a web page logincheck.php to logged.php using1. HTML2. JavaScript3. PHP
arunkarnati
- Oct 1st, 2014
1. HTML: You cant redirect a page using HTML 2. JavaScript: window.location = "logged.php" OR window.location.href = "logged.php" OR location.href = "logged.php" Just so you know if you want to redir...
kedarPhp
- Sep 2nd, 2010
At the starting of the logincheck.php page you can add the javascript code as follow
Code- <script language='javascript''login.php''login.php''login.php';
- </script>
- <?php
- exit(); //write the exit to exit the current php page execution
- ?>
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Write sample code for pagination using java script.
RAJEEVRM
- Sep 12th, 2008
//Javscript code pagination.js file===========function Pager(tableName, itemsPerPage) { this.tableName = tableName; this.itemsPerPage = itemsPerPage; &nb...
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Convert any two numbers into words and perform arithmetic operation
We need to have two numeric values which needs to be first converted to its corresponding words and have to to perform arithmetic operations like addition, subtraction, multiplication and division using it.
Java Script Interview Questions
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