调用方式
var parentArr = transData(res.data, "id", "pId", "children");
方法函数
/**
* id to pid
*/
export function transData(a, idStr, pidStr, chindrenStr) {
var r = [],
hash = {},
id = idStr,
pid = pidStr,
children = chindrenStr,
i = 0,
j = 0,
len = a.length;
for (; i < len; i++) {
hash[a[i][id]] = a[i];
}
for (; j < len; j++) {
var aVal = a[j],
hashVP = hash[aVal[pid]];
if (hashVP) {
!hashVP[children] && (hashVP[children] = []);
hashVP[children].push(aVal);
} else {
r.push(aVal);
}
}
return r;
}
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