var place = []
place[0] = "Sant Marti de Canals";
place[1] = "Catalonia";
place[3] = "";
place[4] = "Spain";
placeTitle = place.join(",");
current output is "Sant Marti de Canals,Catalonia,,,Spain"
how can it be "Sant Marti de Canals,Catalonia,Spain"
You can also define a filter function, which is useful in many other situations.
Array.prototype.filter = function(p) {
var a = [];
p = p || function (x) {return x;}
for (var i = 0; i<this.length; ++i) {
if (p(this[i])) {
a.push(this[i]);
}
}
return a;
}
...
placeTitle = place.filter().join(', ');
false, so it isn't included in the result array. What I don't account for (since it isn't necessary in this case) is 0, which (were it present) would also be filtered out.Writing your own code for this can help
var place = []
place[0] = "Sant Marti de Canals"; place[1] = "Catalonia"; place[3] = ""; place[4] = "Spain";
var placeTitle ='';
for(var test in place) {
placeTitle += place[test]!=''?place[test]+',':'';
}
placeTitle = placeTitle.substr(0,placeTitle.length-1)
, at the end.placeCopy=[];
for(var i=0;i<place.length;i++){
if(typeof place[i] != 'undefined' && place[i].length > 0){
placeCopy.push(place[i]);
}
}
placeTitle = placeCopy.join(",");
