In my map a user can select wellheads using a selection box. When they select the wells my updateGrid function collects the desired information from the wellhead feature and displays it in a dojo grid. One of the things this function does is read, split and trim a field called relatedresources that contains multiple urls. My problem is that my code crashes whenever it tries to read a field that contains a null value. I was able to find a way to compensate for the null values when I try and split a null field but I cannot figure out how to do the same thing when I run my trim method. I get a 'Cannot call method "trim" of undefined.' Im still pretty new to javascript so any ideas, especially simple ideas would be great.function updateGrid(featureSet){
var data=[];
var grid = dijit.byId('grid');
dojo.forEach(featureSet, function (entry) {
var logs = [],
las = [],
folders = [],
//relatedResource = entry.attributes.relatedresource || "";
relatedResource = entry.attributes.relatedresource === null ? "" : entry.attributes.relatedresource;
//if (entry.attributes.relatedresource === null) {
//}
var raw = relatedResource.split("|");
raw.forEach(function (bit){
var resource = bit.split(", ");
// here is where the -> var url = resource[1].trim();
// error occurs var name = resource[0].trim();
var anchor = "<li><a href='" + url + "' target='_blank'>" + name + "</a></li>";
if ( url.indexOf(".tif", url.length -4) !==-1){
logs.push(anchor);
}
if ( url.indexOf(".pdf", url.length -4) !==-1){
folders.push(anchor);
}
if ( url.indexOf(".las", url.length -4) !==-1){
las.push(anchor);
}
});
data.push({
objectid:entry.attributes.objectid,//0
apino:entry.attributes.apino,//1
otherid:entry.attributes.otherid,//2
operator:entry.attributes.operator,//3
county:entry.attributes.county,//4
twp:entry.attributes.twp,//5
rge:entry.attributes.rge,//6
//headeruri:entry.attributes.headeruri,//7
section_:entry.attributes.section_,//8
drillertotaldepth:entry.attributes.drillertotaldepth,//9
formationtd:entry.attributes.formationtd,//10
wellname:entry.attributes.wellname,//11
logField: '<ul>' + logs.join(" ") + '</ul>',
lasField: '<ul>' + las.join(" ") + '</ul>',
folderField: '<ul>' + folders.join(" ") + '</ul>'
//relatedresource: parts[0]
});
});
var dataForGrid= {
items: data
};
var store = new dojo.data.ItemFileReadStore({data:dataForGrid});
//console.log(store);
grid.setStore(store);
}
