I'm writing a form validation script for a form with multiple ratings, and I'd like to insert a bit of text that says "give a rating!" for each rating the user misses. I wrote the code below to do this, but I'm running into a problem where the give_rating node is only appended to the last node on the form. I know that this is because appendChild basically moves a node instead of duplicating it, and I tried solving this using cloneNode but that just breaks my JS entirely.
Anyway, here's the code. What am I doing wrong?
Thanks for your help,
Chris
var give_rating = document.createElement('span');
give_rating.className='small red';
give_rating.innerHTML = '<strong> Give a rating!</strong>';
document.getElementById('rating1').appendChild(give_rating);
document.getElementById('rating2').appendChild(give_rating);
When I use the code above code give_rating is only appended to 'rating2'.
document.getElementById('rating1').appendChild(give_rating.cloneNode(True));
document.getElementById('rating2').appendChild(give_rating.cloneNode(True));
When I use this code the entire script fails. How do I add an instance of "Give a rating!" for each rating on my form that the user fails to fill out?
JavaScript is case-sensitive: True
should be true
(lower case).
- You can only insert the created html elements or document pieces once. So, you have to call the cloneNode() function.
- The javascript is case-sensitive. So, it should be
cloneNode(true)
, instead ofcloneNode(True)
. - You can turn on the javascript debugger of the browser (both Chrome and IE/Edge) by pressing
F12
. Then you can see what happen to your script.
来源:https://stackoverflow.com/questions/4222186/using-appendchild-multiple-times-with-the-same-node-in-js