Not allow a blank character/space in a input form

Question

Is it possible to not allow a blank character/space in a input form like below?

<input type="text" value="" maxlength="30" name="email" class="formfield w0">

Answer 1

检查这个小提琴.相关代码:

$(function() {
    $('#input1').on('keypress', function(e) {
        if (e.which == 32)
            return false;
    });
});