Validation

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The document contains code snippets for JavaScript validation, regular expressions, and CSS styling. It includes JavaScript to validate a form field, examples of regular expression matching and extraction, and CSS code for styling text, links, and elements by id and class.

Business Technology Design

Validation:
<script type="text/javascript">
//Start JavaScript Function
function verify()
{
//for field must take some input
if(document.forms["form1"]["name"].value=="")
{
alert("Please give the name");
return false;
}
}
</script>
<form method="POST" action="test3.asp" name="form1" onSubmit="return verify()">
<!-- Creating Table, having 11rows and 2 columns. -->
<table border="2" align="center" cellpadding="7">
<!-- Start First Row -->
<tr>
<!-- Creating First Column -->
<td><strong>Name:</strong></td>
<!-- Creating Second Columns -->
<td>
<!-- TextBox -->
<input type ="text" name="name"/>
<input type="submit" value="Submit" />
</form>

<!DOCTYPE html>
<html>
<body>

<p id="demo">Click the button to do a case-insensitive search for "w3schools" in a string.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction()
{
var str = "Visit W3Schools";
var patt1 = /w3schools/i;
var result = str.match(patt1);
document.getElementById("demo").innerHTML=result;
}
</script>
</body>
</html>

<!DOCTYPE html>
<html>
<body>
<script>
var patt1=new RegExp("e");
document.write(patt1.test("The best things in life are free"));
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<body>
<script>
var patt1=new RegExp("e");
document.write(patt1.exec("The best things in life are free"));
</script>
</body>
</html>
<!DOCTYPE html>
<html>
<body>
<p id="demo">Click the button to display the matches.</p>
<button onclick="myFunction()">Try it</button>
<script>
function myFunction()
{
var str = "The rain in SPAIN stays mainly in the plain";
var res = str.match(/ain/gi);
document.getElementById("demo").innerHTML=res;
}
</script>

</body>
</html>
CSS:

<!DOCTYPE html>
<html>
<head>
<style>
body
{
background-color:#d0e4fe;
}
h1
{
color:orange;
text-align:center;
}
p
{
font-family:"Times New Roman";
font-size:20px;
}
</style>
</head>
<body>
<h1>CSS example!</h1>
<p>This is a paragraph.</p>
</body>
</html>

<!DOCTYPE html>
<html>
<head>
<style>
#para1
{
text-align:center;
color:red;
}
</style>
</head>
<body>
<p id="para1">Hello World!</p>
<p>This paragraph is not affected by the style.</p>
</body>
</html>
<!DOCTYPE html>
<html>
<head>
<style>
.center
{
text-align:center;
}
</style>
</head>
<body>
<h1 class="center">Center-aligned heading</h1>
<p class="center">Center-aligned paragraph.</p>
</body>
</html>

$<!DOCTYPE html> <html> <head> <style> a:link {color:#FF0000;} /* unvisited link */ a:visited {color:#00FF00;} /* visited link */ a:hover {color:#FF00FF;} /* mouse over link */ a:active {color:#0000FF;} /* selected link */ </style> </head> <body> <p><b><a href="default.asp" target="_blank">This is a link</a></b></p> <p><b>Note:</b> a:hover MUST come after a:link and a:visited in the CSS definition in order to be effective.</p> <p><b>Note:</b> a:active MUST come after a:hover in the CSS definition in order to be effective.</p> </body> </html>$

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Validation

1. Validation: <script type="text/javascript"> //Start JavaScript Function function verify() { //for field must take some input if(document.forms["form1"]["name"].value=="") { alert("Please give the name"); return false; } } </script> <form method="POST" action="test3.asp" name="form1" onSubmit="return verify()">  <table border="2" align="center" cellpadding="7">  <tr>  <td><strong>Name:</strong></td>  <td>  <input type ="text" name="name"/> <input type="submit" value="Submit" /> </form> <!DOCTYPE html> <html> <body>

2. <p id="demo">Click the button to do a case-insensitive search for "w3schools" in a string.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { var str = "Visit W3Schools"; var patt1 = /w3schools/i; var result = str.match(patt1); document.getElementById("demo").innerHTML=result; } </script> </body> </html>

3. <!DOCTYPE html> <html> <body> <script> var patt1=new RegExp("e"); document.write(patt1.test("The best things in life are free")); </script> </body> </html> <!DOCTYPE html> <html> <body> <script> var patt1=new RegExp("e"); document.write(patt1.exec("The best things in life are free")); </script> </body> </html> <!DOCTYPE html> <html> <body> <p id="demo">Click the button to display the matches.</p> <button onclick="myFunction()">Try it</button> <script> function myFunction() { var str = "The rain in SPAIN stays mainly in the plain"; var res = str.match(/ain/gi); document.getElementById("demo").innerHTML=res; } </script>

4. </body> </html> CSS: <!DOCTYPE html> <html> <head> <style> body { background-color:#d0e4fe; } h1 { color:orange; text-align:center; } p { font-family:"Times New Roman"; font-size:20px; } </style> </head> <body> <h1>CSS example!</h1> <p>This is a paragraph.</p> </body> </html>

5. <!DOCTYPE html> <html> <head> <style> #para1 { text-align:center; color:red; } </style> </head> <body> <p id="para1">Hello World!</p> <p>This paragraph is not affected by the style.</p> </body> </html> <!DOCTYPE html> <html> <head> <style> .center { text-align:center; } </style> </head> <body> <h1 class="center">Center-aligned heading</h1> <p class="center">Center-aligned paragraph.</p> </body> </html>

6. <!DOCTYPE html> <html> <head> <style> a:link {color:#FF0000;} /* unvisited link */ a:visited {color:#00FF00;} /* visited link */ a:hover {color:#FF00FF;} /* mouse over link */ a:active {color:#0000FF;} /* selected link */ </style> </head> <body> <p><b><a href="default.asp" target="_blank">This is a link</a></b></p> <p><b>Note:</b> a:hover MUST come after a:link and a:visited in the CSS definition in order to be effective.</p> <p><b>Note:</b> a:active MUST come after a:hover in the CSS definition in order to be effective.</p> </body> </html>

7. <!DOCTYPE html> <html> <head> <style> a:link {color:#FF0000;} /* unvisited link */ a:visited {color:#00FF00;} /* visited link */ a:hover {color:#FF00FF;} /* mouse over link */ a:active {color:#0000FF;} /* selected link */ </style> </head> <body> <p><b><a href="default.asp" target="_blank">This is a link</a></b></p> <p><b>Note:</b> a:hover MUST come after a:link and a:visited in the CSS definition in order to be effective.</p> <p><b>Note:</b> a:active MUST come after a:hover in the CSS definition in order to be effective.</p> </body> </html>

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Validation

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