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< div class = "apiDetail" >
< div >
< h2 > < span > Boolean / Function(treeId, treeNodes, targetNode)< / span > < span class = "path" > setting.edit.drag.< / span > prev< / h2 >
< h3 > 概述< span class = "h3_info" > [ 依赖 < span class = "highlight_green" > jquery.ztree.exedit< / span > 扩展 js ]< / span > < / h3 >
< div class = "desc" >
< p > < / p >
< div class = "longdesc" >
< p > 拖拽到目标节点时，设置是否允许移动到目标节点前面的操作。< span class = "highlight_red" > [setting.edit.enable = true 时生效]< / span > < / p >
< p class = "highlight_red" > 拖拽目标是 根 的时候，不触发 prev 和 next， < / p >
< p class = "highlight_red" > 此功能主要作用是对拖拽进行适当限制（辅助箭头），需要结合 next、inner 一起使用，才能实现完整功能。< / p >
< p > 默认值： < / p >
< / div >
< / div >
< h3 > Boolean 格式说明< / h3 >
< div class = "desc" >
< p > true / false 分别表示 允许 / 不允许 移动到目标节点前面< / p >
< / div >
< h3 > Function 参数说明< / h3 >
< div class = "desc" >
< h4 > < b > treeId< / b > < span > String< / span > < / h4 >
< p > 对应 zTree 的 < b class = "highlight_red" > treeId< / b > ，便于用户操控（多棵树拖拽时，是目标节点所在树的 treeId） < / p >
< h4 class = "topLine" > < b > treeNodes< / b > < span > Array(JSON)< / span > < / h4 >
< p > 被拖拽的节点 JSON 数据集合< / p >
< h4 class = "topLine" > < b > targetNode< / b > < span > JSON< / span > < / h4 >
< p > 拖拽时的目标节点 JSON 数据对象< / p >
< h4 class = "topLine" > < b > 返回值< / b > < span > Boolean< / span > < / h4 >
< p > 返回值同 Boolean 格式的数据< / p >
< / div >
< h3 > setting & function 举例< / h3 >
< h4 > 1. 禁止拖拽到节点前面的操作< / h4 >
< pre xmlns = "" > < code > var setting = {
edit: {
enable: true,
drag: {
prev: false,
next: true,
inner: true
}
}
};
......< / code > < / pre >
< h4 > 2. 禁止拖拽到父节点前面的操作< / h4 >
< pre xmlns = "" > < code > function canPrev(treeId, nodes, targetNode) {
return !targetNode.isParent;
}
var setting = {
edit: {
enable: true,
drag: {
prev: canPrev,
next: true,
inner: true
}
}
};
......< / code > < / pre >
< / div >
< / div >