HTML-JS-CSS/regExp.html at main · madanrajsagar/HTML-JS-CSS · GitHub

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<!DOCTYPE html>
<html>
<body>

<h2>JavaScript Regular Expressions</h2>

<p>The test() method returns true if it finds a match, otherwise false.</p>

<p>Search a string for the character "e":</p>

<p id="demo"></p>

<script>
let text = "aaabbcccccd";
let pattern = /[a]{3}[b]{2}[c]{5}[d]{1}/;
let result = pattern.test(text);

document.getElementById("demo").innerHTML += result;

let text1 ="abcabcabca321765";
let pattern1 =/abcabcabca321765/g;
let result1 =  pattern1.test(text1);
document.getElementById("demo").innerHTML +=("<br>"+result1);


let text2 = prompt("Enter the password :-"+"<br>");
let pattern2 =/[A-Z]{2,}[a-z]{2,}[. , ^ , $ , * , + , ? , { } , [ ] , ( ) , | , \ ,@]{2,}/g;
let result2 =  pattern2.test(text2);

if(result2)
{
document.getElementById("demo").innerHTML +=("<br>"+result1);
}
else
{
    alert("make sure the following instructions :-"+"<br>"+"1.password must contain atleast two upercase charecter ,two lowercase charecter and two speacial charecter "+"<br>"+
    "2. your password should be of max 12 char" ) ;
}

</script>

</body>
</html>