这次给大家带来JS把list转换成树状结构,JS把list转换成树状结构的注意事项有哪些,下面就是实战案例,一起来看一下。
/** * 将list装换成tree * @param {Object} myId 数据主键id * @param {Object} pId 数据关联的父级id * @param {Object} list list集合 */ function listToTree(myId,pId,list){ function exists(list, parentId){ for(var i=0; i<list.length; i++){ if (list[i][myId] == parentId) return true; } return false; } var nodes = []; // get the top level nodes for(var i=0; i<list.length; i++){ var row = list[i]; if (!exists(list, row[pId])){ nodes.push(row); } } var toDo = []; for(var i=0; i<nodes.length; i++){ toDo.push(nodes[i]); } while(toDo.length){ var node = toDo.shift(); // the parent node // get the children nodes for(var i=0; i<list.length; i++){ var row = list[i]; if (row[pId] == node[myId]){ //var child = {id:row.id,text:row.name}; if (node.children){ node.children.push(row); } else { node.children = [row]; } toDo.push(row); } } } return nodes; } var list=[ {"ids":1,"parendId":0,"name":"Foods",url:"wwww"}, {"ids":2,"parentId":1,"name":"Fruits"}, {"ids":3,"parentId":1,"name":"Vegetables"}, {"ids":4,"parentId":2,"name":"apple"}, {"ids":5,"parentId":2,"name":"orange"}, {"ids":6,"parentId":3,"name":"tomato"}, {"ids":7,"parentId":3,"name":"carrot"}, {"ids":8,"parentId":3,"name":"cabbage"}, {"ids":9,"parentId":3,"name":"potato"}, {"ids":10,"parentId":3,"name":"lettuce"}, {"ids":11,"parendId":0,"name":"Foods"}, {"ids":12,"parentId":11,"name":"Fruits"}, {"ids":13,"parentId":11,"name":"Vegetables"}, {"ids":14,"parentId":12,"name":"apple"}, {"ids":15,"parentId":12,"name":"orange"}, {"ids":16,"parentId":13,"name":"tomato"}, {"ids":17,"parentId":13,"name":"carrot"}, {"ids":18,"parentId":13,"name":"cabbage"}, {"ids":19,"parentId":13,"name":"potato"}, {"ids":20,"parentId":13,"name":"lettuce"} ]; console.log(JSON.stringify(listToTree("ids","parentId",list))); console.log(listToTree("ids","parentId",list));
相信看了本文案例你已经掌握了方法,更多精彩请关注php中文网其它相关文章!
推荐阅读:
以上就是JS把list转换成树状结构的详细内容,更多请关注php中文网其它相关文章!
已抢65117个
抢已抢28542个
抢已抢15432个
抢已抢7738个
抢已抢9638个
抢已抢19622个
抢