Block unwanted html tags in a textarea

[ACgordon]

Can anyone offer advice on how to stop users entering html tags in the textarea part of a form ?

[Dormilich]

you can use a RegExp to remove anything that looks like "<some_chars>" afterwards. you can also check, if the character entered is "<" or ">", although this will also trigger for "f(x) < f’(x+dx)" or "I <-- running away".

[ACgordon]

thanks for the reply Dormilich.

Ideally I want to pop an alert box if the textarea has the text href in it.

My javascript is poor but I got it to work with ..

if (objForm.faultReport.value.length >= 2)
            {        
                var invalid  ="href";
                var strData = objForm.faultReport.value;
 
                gb_val = strData.indexOf(invalid);
 
                if(gb_val>0)
                {
                alert("illegal text in the Comments box\n Please re-enter text");
                return(false);
                }
            }