D3.js可折叠树-展开/折叠节点

Question

我有一个D3.js可折叠树，它有一堆节点，如下图所示

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现在，如果一个节点被展开，我想折叠所有其他节点。例如，在图中，如果analytics node是展开的，那么它应该折叠data node。我指的是D3.js collapsible tree - expand/collapse intermediate nodes，但它没有多大帮助。

Answer 1

我在Przemek暗示的帮助下找到了解决方案。现在它工作得很好。:)

function click(d) {
var index;
for(var i=0;i<d.parent.children.length;i++){//length of current label
    if(d.parent.children[i].name===d.name)
        index = i;
};

for(var i=0;i<d.parent.children.length;i++){
    if(typeof d.parent.children[i].children!=="undefined" && i!=index){//if child is expnd then make null
        d.parent.children[i]._children=d.parent.children[i].children;
        d.parent.children[i].children= null;
    }
}
if (d.children) {
    d._children = d.children;
    d.children = null;
} else {
    d.children = d._children;
    d._children = null;
}
update(d);
}

Answer 2

将单击函数更改为

function click(d) {
    for (var i = 0; i < d.parent.children.length; i++) {
        if (d.parent.children[i].name !== d.name) {

            console.log(d.parent.children[i])

            if (d.parent.children[i].children) {
                d.parent.children[i].children = d._children;
                d.parent.children[i].children = null;
            }           
        }
    };

    if (d.children) {
        d._children = d.children;
        d.children = null;
    } else {
        d.children = d._children;
        d._children = null;
    };

    update(d);
}

希望它能帮上忙