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transform a path array to a tree.
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| var arr=["www.ifeng.com/index","news.ifeng.com/index","news.ifeng.com/mainland/index","ent.ifeng.com","news.ifeng.com/mil/index","news.ifeng.com/mil/","news.ifeng.com/mil/special/fzlfm/index"]; | |
| var item; | |
| var result = []; | |
| var current; | |
| var path; | |
| var hasIt; | |
| var index; | |
| current = result; | |
| for (var i = 0, iLen = arr.length; i < iLen; i++) { | |
| item = arr[i].split('/'); | |
| for (var j = 0, jLen = item.length; j < jLen; j++) { | |
| path = item[j]; | |
| if (path === '') { | |
| break; | |
| } | |
| hasIt = false; | |
| for (var m = 0, mLen = current.length; m < mLen; m++) { | |
| if (current[m].path === path) { | |
| hasIt = true; | |
| index = m; | |
| break; | |
| } | |
| } | |
| if (j === jLen - 1) { | |
| if (!hasIt) { | |
| current.push({path:path}); | |
| } | |
| } else { | |
| if (!hasIt) { | |
| current.push({path:path, list:[]}); | |
| index = current.length - 1; | |
| } | |
| if (typeof current[index].list === 'undefined') { | |
| current[index].list = []; | |
| } | |
| current = current[index].list; | |
| } | |
| } | |
| current = result; | |
| } | |
| console.log(JSON.stringify(result)); | |
| console.log(result); |
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| [ | |
| { | |
| "path": "www.ifeng.com", | |
| "list": [ | |
| { | |
| "path": "index" | |
| } | |
| ] | |
| }, | |
| { | |
| "path": "news.ifeng.com", | |
| "list": [ | |
| { | |
| "path": "index" | |
| }, | |
| { | |
| "path": "mainland", | |
| "list": [ | |
| { | |
| "path": "index" | |
| } | |
| ] | |
| }, | |
| { | |
| "path": "mil", | |
| "list": [ | |
| { | |
| "path": "index" | |
| }, | |
| { | |
| "path": "special", | |
| "list": [ | |
| { | |
| "path": "fzlfm", | |
| "list": [ | |
| { | |
| "path": "index" | |
| } | |
| ] | |
| } | |
| ] | |
| } | |
| ] | |
| } | |
| ] | |
| }, | |
| { | |
| "path": "ent.ifeng.com" | |
| } | |
| ] |
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