Validating special characters in javascript

@#$%^&*]{7,15}$/; if(inputtxt.value.match(paswd)) { alert('Correct, try another...') return true; } else { alert('Wrong...! Next the match() method of string object is used to match the said regular expression against the input value. function Check Password(inputtxt) { var decimal= /^(? You can write a Java Script form validation script to check whether the required field(s) in the HTML form contains only letters. To get a string contains only letters (both uppercase or lowercase) we use a regular expression (/^[A-Za-z]+$/) which allows only letters.Next the match() method of string object is used to match the said regular expression against the input value. li {list-style-type: none; font-size: 16pt; } { margin: auto; padding-top: 10px; padding-bottom: 10px; width: 400px; background : #D8F1F8; border: 1px soild silver; } h2 { margin-left: 38px; } input { font-size: 20pt; } input:focus, textarea:focus{ background-color: lightyellow; } input submit { font-size: 12pt; } { color: #FF0000; font-size: 10pt; } To validate the said format we use the regular expression ^[A-Za-z]\w{7,15}$, where \w matches any word character (alphanumeric) including the underscore (equivalent to [A-Za-z0-9_]).

') return false; } } Flowchart : View the example in the browser To validate the said format we use the regular expression ^(? You can create a password in different ways, it's structure may be simple, reasonable or strong. =.*[A-Z]).{6,20}$/; if(inputtxt.value.match(passw)) { alert('Correct, try another...') return true; } else { alert('Wrong...! Here we validate various type of password structure through Java Script codes and regular expression. Next the match() method of string object is used to match the said regular expression against the input value. function Check Password(inputtxt) { var passw = /^(? ') return false; } } To validate the said format we use the regular expression ^^(? Enforcing secure passwords is an essential part on any login system.

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Sometimes a password validation in a form is essential.

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