jQuery remove spaces on blur not working

问题

The replace function I'm using works as I've tested it in the console but it does not work at all on blur. How can I fix that?

<script type="text/javascript">
    //Ensure spaces are not entered between tags
    jQuery(document).ready(function(){
        jQuery('#item_keywords').blur(function(){
            $(this).val().replace(/^\s+$/,"");
        });
    });
</script>

回答1:

you have removed the spaces but u have not assigned them any where :)

jQuery(document).ready(function(){
        jQuery('#item_keywords').unbind('blur').bind('blur',function(){
            $(this).val($(this).val().replace(/^\s+$/,""));
        });
    });

回答2:

I'm using:

        jQuery(document).ready(function(){
            jQuery('#business_email').unbind('blur').bind('blur',function(){
                var a = $(this).val().trim();
                $(this).val(a + '.');
                $(this).val(a);
            });
        });

回答3:

You can try this.

$(document).ready(function(){
    $("#mytextbox").blur(function(){
        $(this).val($(this).val().replace(/\s/g,''));
        console.log($(this).val());
    });
});

来源：https://stackoverflow.com/questions/5040757/jquery-remove-spaces-on-blur-not-working