mickeymouse 0 Posted June 23, 2019 Report Share Posted June 23, 2019 Isn't this code correct? I'm trying to test for the length of an input field when submit is clicked. function formcheck() {if(stdcd.value.length < 9){alert(\"MUST BE 9 CHARACTERS.\");return false;} return true;} Thanks Quote Link to post Share on other sites
Ingolme 1,018 Posted June 23, 2019 Report Share Posted June 23, 2019 The variable "stdcd" is not defined, you need to assign an input element to it before you can use it. You can access an element using one of many DOM methods such as getElementById() or querySelector() 1 Quote Link to post Share on other sites
Makwana Prahlad 1 Posted September 28, 2019 Report Share Posted September 28, 2019 Hello, @mickeymouse Try this code : <html> <head> <script> function countlength() { var textval = document.getElementById("val"); if (textval.value.length < 9) { alert("MUST BE 9 CHARACTERS." + "\n\nYour input characters length is :- " + textval.value.length); return false; } return true; } </script> <title>Input value length checked</title> </head> <body> <h2>Input value length checked</h2> <input type="text" name="val" id="val" /> <br /><br /> <input type="submit" value="Submit" name="Submit" onclick="countlength()" /> </body> </html> I hope above code will be useful for you. Thank you. Quote Link to post Share on other sites
AjayGohil 0 Posted October 23, 2019 Report Share Posted October 23, 2019 (edited) Try this way <input type="text" id="txtName" name="usrname" > <input type="submit" value="Submit" name="Submit" onclick="chklength()" /> <script> function chklength() { var name=$("#txtName").val(); if(name.length < 9){ alert("Name must be nine characters "); } </script> Edited October 23, 2019 by AjayGohil Quote Link to post Share on other sites
dsonesuk 906 Posted October 23, 2019 Report Share Posted October 23, 2019 That limits the string length to a max of 9, the js code allows 9 and above. Quote Link to post Share on other sites
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