1 <div class="apiDetail">
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3 <h2><span>Function(treeId, treeNode)</span><span class="path">setting.callback.</span>beforeMouseDown</h2>
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4 <h3>Overview<span class="h3_info">[ depends on <span class="highlight_green">jquery.ztree.core</span> js ]</span></h3>
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7 <div class="longdesc">
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8 <p>Used to capture the mousedown event before the 'onMouseDown' callback, zTree based on return value to determine whether to trigger the 'onMouseDown' callback.</p>
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12 <h3>Function Parameter Descriptions</h3>
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14 <h4><b>treeId</b><span>String</span></h4>
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15 <p>zTree unique identifier: <b class="highlight_red">treeId</b>, easy for users to control.</p>
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16 <h4 class="topLine"><b>treeNode</b><span>JSON</span></h4>
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17 <p>JSON data object of the node which mouse over</p>
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18 <p class="highlight_red">If the DOM which mouse over isn't a node, it will return null.</p>
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19 <h4 class="topLine"><b>Return </b><span>Boolean</span></h4>
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20 <p>return true or false</p>
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21 <p class="highlight_red">If return false, zTree will not trigger the 'onMouseDown' callback, no effect on other operations.</p>
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23 <h3>Examples of setting & function</h3>
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24 <h4>1. disable to trigger the 'onMouseDown' callback</h4>
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25 <pre xmlns=""><code>function zTreeBeforeMouseDown(treeId, treeNode) {
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30 beforeMouseDown: zTreeBeforeMouseDown
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