javascript - How can i validate and alert if the phone has incorrect input? -


the phone number , email must valid.

this basic popup contact form without phone number validation. validate phone number. heard regex i´m not sure how implement in code.

since don´t understand javascrip yet hope can me.

<form action="#" method="post" id="form">      <h2>contact us</h2><hr/>     <input type="text" name="company" id="company" placeholder="company"/>      <input type="text" name="name" id="name" placeholder="name"/>      <input type="text" name="email" id="email" placeholder="email"/>      <input type="text" name="phone" id="email" placeholder="phone"/>      <a id="submit" href="javascript: check_empty()">send</a>  </form>   function check_empty(){     if(document.getelementbyid('company').value == ""      || document.getelementbyid('name').value == ""     ||document.getelementbyid('email').value == ""     ||document.getelementbyid('phone').value == "" ){     alert ("please, fill fields!");     }     else {           document.getelementbyid('form').submit();     } }  //function display popup function div_show(){      document.getelementbyid('abc').style.display = "block"; }  //function check target element function check(e){      var target = (e && e.target) || (event && event.srcelement);       var obj = document.getelementbyid('abc');      var obj2 = document.getelementbyid('popup');       checkparent(target)?obj.style.display='none':null;      target==obj2?obj.style.display='block':null;   }   //function check parent node , return result accordingly function checkparent(t){      while(t.parentnode){          if(t==document.getelementbyid('abc'))             {                  return false              }         else if(t==document.getelementbyid('close'))             {                 return true             }          t=t.parentnode      }      return true  }


Comments

Post a Comment

Popular posts from this blog

Is there a better way to structure post methods in Class Based Views -

i'm using class based views in django , never specify url in ajax calls , omit action parameter in form because know these requests go through post method of class based view. notice view - profile page make many requests depending on user updating on page - post method become convoluted , if/else mess example: def post(self, request, *args, **kwargs): # handle user changing available date if request.post.get('availabledate') != none: self.updateavailabledate(request) return jsonresponse({'result':'success'}) if request.post.get('newprojectname') != none: creative_user = creativeuserprofile.objects.get(id = request.user.id) project = project.create_project(creative_user, request.post['newprojectname']) project.save() return jsonresponse({'projectid': project.id }) if request.post.get('projectimage') != none , request.files['file']: proj
Read more

performance - Why is XCHG reg, reg a 3 micro-op instruction on modern Intel architectures? -

i'm doing micro-optimization on performance critical part of code , came across sequence of instructions (in at&t syntax): add %rax, %rbx mov %rdx, %rax mov %rbx, %rdx i thought had use case xchg allow me shave instruction , write: add %rbx, %rax xchg %rax, %rdx however, dimay found agner fog's instruction tables , xchg 3 micro-op instruction 2 cycle latency on sandy bridge, ivy bridge, broadwell, haswell , skylake. 3 whole micro-ops , 2 cycles of latency! 3 micro-ops throws off 4-1-1-1 cadence , 2 cycle latency makes worse original in best case since last 2 instructions in original might execute in parallel. now... cpu might breaking instruction micro-ops equivalent to: mov %rax, %tmp mov %rdx, %rax mov %tmp, %rdx where tmp anonymous internal register , suppose last 2 micro-ops run in parallel latency 2 cycles. given register renaming occurs on these micro-architectures, though, doesn't make sense me done way. why wouldn't register renamer
Read more

jquery - Responsive Navbar with Sub Navbar -

good day, forgive me nav vocabulary not best. if question confusing apologize. i'm working on navigation bar needs centered on page @ 768px , above. items in nav open (or perhaps toggle) subnav lives directly below. these nav should appear centered on page. i have been able work through responsive portion of nav bar, having main items align vertically , sub nav menu of each item roll out below, , gave them indent separation. working well. however, issue not responsive side, behavior @ width greater 768px. happens toggling menu's sub navigation pushes other main items down page below sub nav. here's code: $(document).ready(function () { //stick in fixed 100% height behind navbar don't wrap $('#slide-nav.navbar-inverse').after($('<div class="inverse" id="navbar-height-col"></div>')); $('#slide-nav.navbar-default').after($('<div id="navbar-height-col"></d
Read more