javascript variable referencing

Question

So I am trying to set a metric for Universal Analytics. Here is the JavaScript that I am using:

function setCustomMetric(index, value){
  if(typeof index === "number" && index > 0 && typeof value === "number"){
    var metricIndex = 'metric' + index;
    ga('set', {metricIndex: value});
  }
}

When I send the function 1 and 5 as the respective parameters I get this return My problem is that it is sending ga("set", {metricIndex: 5}); rather than ga("set", {metric1: 5}); I could use a switch statement for the 20 possible indexes but I would rather not have to hard code all of the possibilities. Any ideas?

Jonathan M · Accepted Answer · 2014-10-31 17:03:58Z

4

Try this:

var metricIndex = 'metric' + index;
var myObject={};

myObject[metricIndex]=value;
ga('set', myObject);

answered Oct 31, 2014 at 17:03

Jonathan M

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1 Comment

Louis Pujol Over a year ago

Awesome! Thanks and excuse my lack of knowledge in JS

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