| New file |
| | |
| | | <div class="apiDetail"> |
| | | <div> |
| | | <h2><span>Function(treeId, treeNode)</span><span class="path">setting.callback.</span>beforeCheck</h2> |
| | | <h3>Overview<span class="h3_info">[ depends on <span class="highlight_green">jquery.ztree.excheck</span> js ]</span></h3> |
| | | <div class="desc"> |
| | | <p></p> |
| | | <div class="longdesc"> |
| | | <p>Callback before checking or unchecking a node, A false return value from the callback will prevent any change in the checked state.</p> |
| | | <p>Default: null</p> |
| | | </div> |
| | | </div> |
| | | <h3>Function Parameter Descriptions</h3> |
| | | <div class="desc"> |
| | | <h4><b>treeId</b><span>String</span></h4> |
| | | <p>zTree unique identifier: <b class="highlight_red">treeId</b>.</p> |
| | | <h4 class="topLine"><b>treeNode</b><span>JSON</span></h4> |
| | | <p>JSON data object of the node which is checked or unchecked</p> |
| | | <h4 class="topLine"><b>Return </b><span>Boolean</span></h4> |
| | | <p>return true or false</p> |
| | | <p class="highlight_red">If return false, zTree will not change the checkbox state, and will not trigger the 'onCheck' callback.</p> |
| | | </div> |
| | | <h3>Examples of setting & function</h3> |
| | | <h4>1. This example returns false, preventing all checkboxes in the tree from toggling.</h4> |
| | | <pre xmlns=""><code>function myBeforeCheckCallBack(treeId, treeNode) { |
| | | return false; |
| | | }; |
| | | var setting = { |
| | | callback: { |
| | | beforeCheck: myBeforeCheckCallBack |
| | | } |
| | | }; |
| | | ......</code></pre> |
| | | </div> |
| | | </div> |