新聞財經娛樂♬資訊 News Economy

Thanks for your reply

have a nice day

Duncan

Question-1:
Why did you add << return false >> here :
<form onsubmit="chkvalid(this);return false;">
I see no "CONDITIONAL" logic to submit OR NOT the form as it always do << return false >>

Q2 : this represent a context, you can use $(this).find(".mesg") instead
$(this, ".mesg") represent all the form inside  an element with mesg class, non-sense

Q3 :
why not but as jQuery slogan is write less do more...
$(".mesg", this)
vs :
$(this).find(".mesg")

16 vs 21 characters

Thanks for your reply,  leakim971

Question-1:

Why I need this to prevent return false ?
event.preventDefault(); // prevent submission of the form like << return false; >>

onsubmit(chkvalid();return false);  where "return false" by that I can do submit form
on form action  after doing chkvalid javascript function

Question-2
What is meaning of $(".mesg",this),  where this  I understand that is refered to the submit object, but what is sequence meaning of $(".mesg", this) ? and why  not $(this,".mesg") ?

Question-3
$(obj ).find(".mesg").each(function( index) {
  console.log( index + ": " + $( this ).html() );  
});

I used $(obj). find() to get it work finally , is it same as your method of $(".mesg",this) ?

I will try your code since I feel find() is not good since it will do some loop seach and
it might not need it since each() will handle this. So the question is finding a good selector , Right ?
 
Please advise
Duncan