Restrict input with regex

Anilananda Chakrabortty

6y968

HI,

I have a input requirement of string pattern from front end.

the string can be aa-bbb-cccc the first word would be minimum 2 then second word would be between (3 to 5 character) and the last word can be (4 to 7 character)

each word is separated by a hyphen.

so that i have written one regular expression but it is not working can any one help me.

i am not able to find the problem.

var CustomeExp=/^([a-zA-z]{2})-([a-zA-Z]{3,5})-([a-zA-Z]{4,7})$/;
here is my code which...
"jquery@*" data-semver="3.2.1" src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js">
Enter your text :
"text" onkeypress="return validateKeypress(CustomeExp);">

var CustomeExp=/^([a-zA-z]{2})-([a-zA-Z]{3,5})-([a-zA-Z]{4,7})$/;
function validateKeypress(validChars) {
//alert(validChars);
var keyChar = String.fromCharCode(event.which || event.keyCode);
//alert(keyChar);
return validChars.test(keyChar) ? keyChar : false;
}

Thanks

2 Replies

Know the answer? Post it — somebody with the same question will find it here.

Rajeesh Menoth6y ago
Hi,

Please try the following code :
$(document).ready(function() {

  var regex = new RegExp("/^([a-zA-z]{2})-([a-zA-Z]{3,5})-([a-zA-Z]{4,7})$/");

  $("#place").on("keyup", function() {
    document.getElementById('text').textContent = $("#place").val();


    var keyChar = String.fromCharCode(event.which || event.keyCode);
    alert(keyChar);

    alert(regex.test(keyChar) ? keyChar : false);

    return regex.test(keyChar) ? keyChar : false;

    //rajeeshmenoth

  });
});
Demo :
https://jsfiddle.net/uq86ytsa/1/

Reference :

https://www.c-sharpcorner.com/blogs/difference-between-keypress-keyup-in-jquery
+1
ammar zaidi6y ago
4. "jquery@*" data-semver="3.2.1" src="https://cdn.jsdelivr.net/npm/[email protected]/dist/jquery.min.js">
7. "text/javascript">
8. var CustomeExp=/^\d{2}-\d{3,5}-\d{4,7}$/;
9. function validateKeypress(event) {
10. console.log(event.target.value)
11. /*const str = '12-4544-7894' ;*/
12. if (CustomeExp.test(event.target.value) ){
13. console.log('yes');
14. }else{
15. console.log("no")
16. }
19. "text" onkeypress="validateKeypress(event);">
22. regrex is:/^\d{2}-\d{3,5}-\d{4,7}$/;
+1