JavaScript 数据树索引设置函数 - ES6 优化代码

function setIndex(data) { let queue = [...data]; let loop = 0; while (queue.length > 0) { loop++; for (const [i, child] of [...queue].entries()) { queue.shift(); if (loop == 1) { child.customIndex = ${i + 1}; child.currentIndex = i; child.path = i; } if (child.children && child.children.length > 0) { child.dataType = 1; for (const [ci, cChild] of child.children.entries()) { cChild.currentIndex = ci; cChild.customIndex = ${child.customIndex}.${ci + 1}; cChild.path = ${child.path}.children.${ci}; } queue.push(...child.children); } else { child.dataType = 2; } } } }