javascript - Sort/intersect two arrays into two new ones. -


this question has answer here:

let's assume have 2 lists. 1 existing names , new 1 maybe new names, deleted names or still same names.

var currentlist = ['daniel', 'lara', 'horst']; var newlist = ['mario', 'lara'];  // expected result todelete = ['daniel', 'horst'];  toadd = ['mario'];

at end need 2 arrays contains new names , can deleted. names appear in both array can ignored.

i don't know call type of "sorting", buzzword help. notice don't have jquery @ all.

thanks in advance.

thats pretty straightforward, 2 loops:

var currentlist = ['daniel', 'lara', 'horst']; var newlist = ['mario', 'lara'];  var todelete = []; var toadd = []; for(var i=0;i<newlist.length;i++){     if(currentlist.indexof(newlist[i]) >-1)         toadd.push(newlist[i]) }  for(var i=0;i<currentlist.length;i++){    if(newlist.indexof(currentlist[i]) == -1)        todelete.push(currentlist[i]); }  console.log('dele',todelete); console.log('add',toadd);

live example: http://jsfiddle.net/r6l7lpel/


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