Javascript Dictionary Application Example

Dictionary is a useful tool that has been used frequently in previous C # projects, this post is mainly about JavaScript, the actual application scenario of the dictionary

First in JS, there is no dictionary ' class, we need to implement the key value (key)-value (value) of the corresponding relationship, the best way is to use the array

First of all, the background, I need to base on the site number in the array to get to the corresponding site name

First, through the thrift interface, get the device information in the database, through the AJAX transfer to the JS page, traversing the array

PS: Data structure is as follows:

# device Information struct Device{int id,# string name, ...};

# site Information struct site{int id,# string name,.....,list<device> lsdevices};

# zone information struct Area{int id,# string name,.....,list<site> lssites};

First get to the region information, and then according to the length of list<site> lssites to determine if there is no site, if there is, get information, and so on

I found a csdn above, the URL is as follows: Http://www.cnblogs.com/baiyangyuanzi/p/6689554.html, on his basis, I made a slight modification, extracted the part I need

The code is as follows:

1     functionDictionary () {2          This. Datastore =NewArray ();3          This. Add =function(key, value) {4              This. Datastore[key] =value;5         }6          This. Find =function(key) {7             return  This. Datastore[key];8         }9}

View Code

Then instantiate the Dictionary class

var adddevide = new  Dictionary ();

Start the convenience array, pass the value, the code is as follows:

1 //Device number Dictionary2     functionDictionarydevice (list) {3         varLength =list.length;4         //Storage Device ID5         varID = "";6         //Storage Device Name7         varName = "";8 9         vari = 0;Ten         varII = 0; One         varIII = 0; A  -          for(i = 0;i<length;i++){ -ID =List[i].szareaid; theName =List[i].szareaname; - Adddevide.add (id,name); -             if(List[i].lssites.length = = 0){ -                 Break; +             } -             Else{ +                  for(ii = 0;ii<list[i].lssites.length;ii++){ AID =List[i].lssites[ii].szsiteid; atName =List[i].lssites[ii].szsitename; - Adddevide.add (id,name); -                     if(List[i].lssites[ii].lsdevices.length = = 0){ -                          Break; -                     } -                     Else{ in                          for(iii = 0;iii<list[i].lssites[ii].lsdevices.length;iii++) { -ID =List[i].lssites[ii].lsdevices[iii].szdeviceid; toName =List[i].lssites[ii].lsdevices[iii].szdevicename; + Adddevide.add (ID, Name); -                         } the                     } *                 } $             }Panax Notoginseng         } -  theAlert (Adddevide.find ("JS0101")); +}

View Code

Run the program, appear JS0101 corresponding to the site, the dictionary completed

Javascript Dictionary Application Example