In the script if user input contains space ' ' or does not contain @, then get warning.
Problem is that if space is deleted, warning does not disappears. What need to change?
HTML Code:<script type="text/javascript"> <!-- function checkEmail(email){ if(email.length > 0) { if (email.indexOf(' ') >= 0)//The indexOf() method returns the position of the first occurrence of a specified value in a string. document.getElementById('myDiv1').innerHTML = 'email addresses cannot have spaces in them'; else if (email.indexOf('@') == -1) document.getElementById('myDiv1').innerHTML = 'a valid email address must have an @ in it'; else if (email.indexOf('@') == 1) document.getElementById('myDiv1').innerHTML = ''; else if (email.indexOf(' ') == 0) document.getElementById('myDiv1').innerHTML = ''; } } //--> </script> </head> <body> <form action="#" method=post> email: <INPUT NAME="email" onChange="checkEmail(this.value)"><BR> </form> <div id="myDiv1"></div>
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