javascript - How to Group By Json Array -

i have array , want apply group column (key). have this.

app.groupdtdata = function(data, column) {   var generateddata=[];   $.each(data,function(i,dt){     // generateddata     // if(jquery.inarray( "john", generateddata ))   }); } 

i have push generateddata , check jquery.inarray ?

you wouldn't use inarray need object hold result, not array. use in operator property in object.

you column value item , check if exist in result. if doesn't exist, add new array name. add item array , lastly return result:

app.groupdtdata = function(data, column) {   var generateddata = {};   $.each(data, function(i, dt) {     var key = dt[column];     if (!(key in generateddata)) {       generateddata[key] = [];     }     generateddata[key].push(dt);   });   return generateddata; }; 

demo:

function group(data, column) {    var generateddata = {};    $.each(data, function(i, dt) {      var key = dt[column];      if (!(key in generateddata)) {        generateddata[key] = [];      }      generateddata[key].push(dt);    });    return generateddata;  }    var g = group([    { name: 'john', grp: '1' },    { name: 'elsa', grp: '2' },    { name: 'mandy', grp: '2' },    { name: 'bo', grp: '1' }  ], 'grp');    document.write(json.stringify(g));

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