Table of Contents
All Small Letters
JavaScript Code
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Small Letter Validations</title>
</head>
<body>
<input type="text" id="s1">
<p id="g1"></p>
<input type="button" onclick="cc()" value="Submit">
<script>
function cc()
{
h=0;
a=document.getElementById("s1").value;
for(j=0;j<=a.length;j++){
b=a.charCodeAt(j);
if(b>=97 && b<=122){
h++;
}
}
if (h==a.length){
document.getElementById("g1").innerHTML="All are Small Letters";
}
else{document.getElementById("g1").innerHTML="No Small Letters";}
}
</script>
</body>
</html>
Complex Password
JavaScript Code
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Complex Password Validation</title>
</head>
<body>
<p>Checking if Password Contains </p>
<ul>
<li>Minimum one Special Character</li>
<li>Minimum one Lower Case Alphabet</li>
<li>Minimum one Upper Case Alphabet</li>
<li>Minimum one Numerical Value</li>
</ul>
<input type="text" id="s1">
<p id="g1"></p>
<input type="button" onclick="cc()" value="Submit">
<script>
function cc()
{
a=document.getElementById("s1").value;
c=0;
d=0;
e=0;
f=0;
for(b=0;b<a.length;b++)
{
g=a.charCodeAt(b);
if(g>=97 && g<=122)
{
c=1;
}
else if(g>=65 && g<=90)
{
d=1;
}
else if(g>=48 && g<=57)
{
e=1;
}
else if((g>=33 && g<=47) || (g>=58 && g<=64) || (g>=91 && g<=96) || (g>=123 && g<=126))
{
f=1;
}
}
if((c==0) || (d==0) || (e==0) || (f==0))
{
document.getElementById("g1").innerHTML="please enter minimum 1 lower case characte and 1 upper case and 1 special character and i numerical value";
}
else{
document.getElementById("g1").innerHTML="correct";
}
}
</script>
<!--
65 to 90 A to Z
97 to 122 a to z
48 to 57 0 to 9
special character 33 to 47 and 58 to 64 and 91 to 96 and 123 to 126
-->
</body>
</html>
Confirm Password
HTML Code
<form id="form1">
<input type="password" name="passward" id="passward" onblur="return formvalipassward()"/>
<input type="password" name="passwardconfirm" id="passwardconfirm" onblur="return formvaliconfirm()"/>
</form>
JavaScript Code
function formvaliconfirm(){
var pass=document.form1.passward.value;
var passconfirm=document.form1.passwardconfirm.value;
if
(!(pass==passconfirm)){alert("please enter a correct passward")}
}
Email Validation
HTML Code
<form id="form1">
<input type="text" name="emailid" id="emailid" onblur="return formvaliemail()"/>
JavaScript Code
function formvaliemail(){
var email=document.form1.emailid.value;
var c=email.indexOf("@");
var d=email.indexOf(".");
var e=email.lastIndexOf(".");
var f=email.length;
var g=e+4;
var j=c+5;
if
(email==""){alert("please enter a value")}
else if(c==-1)
{alert("please enter a value with @")
}
else if(d==-1)
{alert("please enter a value with .")
}
else if(e<c)
{alert("please enter@ before dot(.)")
}
else if(g>f)
{alert("please enter3 values after last dot(.)")
}
else if(j>e)
{alert("please enter5 values after@ & last dot(.)")
}
}
Math Function in Form Validations
1. length
2. indexOf
3. lastIndexOf
4. charCodeAt
5. charAt
6. Nan
Mobile validation
HTML Code
<input type="text" name="mobile" id="mobile" onblur="return formvalimobile()"/>
JavaScript Code
function formvalimobile(){
var mob=document.form1.mobile.value;
if
(mob==""){alert("please enter a value")}
else if
(isNaN(mob)){alert("please enter a numerical value")}
else if(!(mob.length==10)){alert("please enter a value of 10 digit for India")
}
else if(!(mob.charAt(0)==9))
{alert("please enter a first digit with 9")
}
else if(!(mob.charAt(1)==9))
{alert("please enter a second digit with 9")
}
}
Name validation
HTML Code
<input type="text" name="username" id="username" onblur="return formvaliname()"/>
JavaScript Code
function formvaliname(){
var nm=document.form1.username.value;
if
(nm==""){alert("please enter a value")}
else if
(!(isNaN(nm))){alert("please enter first letter alphabetical")}
else if
(nm.length<5){alert("please enter minimum 5 letters")}
else if
(nm.indexOf(" ")==-1){alert("please enter sur name")}
}
Password Validation
HTML Code
<input type="password" name="passward" id="passward" onblur="return formvalipassward()"/>
JavaScript Code
function formvalipassward(){
var pass=document.form1.passward.value;
if
(pass==""){alert("please enter a value")}
else if
(pass.length<8){alert("please enter minimum 8 letters")}
}
