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Commitde2aac2

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Update form_collections.rst
The assignment to collectionHolder must be done within jQuery ready function, or else it will be null.BTW, the variables in JavaScript do not need the $, which is confusing since in jQuery $ has a special meaning.
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‎cookbook/form/form_collections.rst‎

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Original file line numberDiff line numberDiff line change
@@ -358,27 +358,27 @@ will be show next):
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..code-block::javascript
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// Get the ul that holds the collection of tags
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var collectionHolder=$('ul.tags');
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// setup an "add a tag" link
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var$addTagLink=$('<a href="#">Add a tag</a>');
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var$newLinkLi=$('<li></li>').append($addTagLink);
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var addTagLink=$('<a href="#">Add a tag</a>');
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var newLinkLi=$('<li></li>').append(addTagLink);
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jQuery(document).ready(function() {
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// Get the ul that holds the collection of tags
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var collectionHolder=$('ul.tags');
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// add the "add a tag" anchor and li to the tags ul
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collectionHolder.append($newLinkLi);
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collectionHolder.append(newLinkLi);
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// count the current form inputs we have (e.g. 2), use that as the new
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// index when inserting a new item (e.g. 2)
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collectionHolder.data('index',collectionHolder.find(':input').length);
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$addTagLink.on('click',function(e) {
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addTagLink.on('click',function(e) {
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// prevent the link from creating a "#" on the URL
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e.preventDefault();
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// add a new tag form (see next code block)
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addTagForm(collectionHolder,$newLinkLi);
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addTagForm(collectionHolder, newLinkLi);
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});
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});
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@@ -393,7 +393,7 @@ one example:
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..code-block::javascript
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functionaddTagForm(collectionHolder,$newLinkLi) {
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functionaddTagForm(collectionHolder,newLinkLi) {
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// Get the data-prototype explained earlier
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var prototype=collectionHolder.data('prototype');
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@@ -408,8 +408,8 @@ one example:
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collectionHolder.data('index', index+1);
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// Display the form in the page in an li, before the "Add a tag" link li
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var$newFormLi=$('<li></li>').append(newForm);
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$newLinkLi.before($newFormLi);
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var newFormLi=$('<li></li>').append(newForm);
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newLinkLi.before(newFormLi);
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}
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..note::

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