Format info window content: Display text from a Double field

[Chang-HengYang]

Hi All,

Thank you for your time in advance.  I am wondering if anyone could provide valuable opinions how to display the text from a Double field in the info window (code listed below). I found some records have the zero value in the Double field ${WellDepth}. I want to see if anyone could provide a function to replace the 0 to display "Unknown Value" and keep the same value if the ${WellDepth} is greater than 0.

Many thanks,

Hank

var content_magnesium_depthLocation = 
                  "<b>PointID</b>: ${POINT_ID}" +
                  "<br><b>Date Collection</b>: ${Collection}" +
                  "<br><b>Magnesium Value</b>: ${Mg_Symbol}${Mg}(mg/L)" +
                  "<br><b>Well Depth</b>: ${WellDepth}(ft)" +
   "<br><b>Data Source</b>: ${DataSource}" +
  "<br><b>Data Source Information</b>: ${DataSour_1}" +
"<br><b >More Information</b>:<a target='_blank' href='https://community.esri.com/maps/data/Water/${POINT_ID}/Mg' >Magnesium Info</a>";

[RobertScheitlin__GISP]

Chang-Heng,

  This is exactly one of the reasons why the InfoTemplates set setContent method can take a string or a function. Use a function to look at the features attribute value for WellDepth and if it is 0 then add text to the content string that is returned instead of the numeric value.

[Chang-HengYang]

Hi Robert,

Thank you for the reply. I am wondering if you could provide more details on the function for this question.

Thanks,

Chang-Heng

[RobertScheitlin__GISP]

Chang-Heng,

  Here is an example function:

function setContent(value)  {
  var formatString = "<b>Property Name:  </b> + value.attributes.PropertyName +"<br/>"
  var sqft = geometryEngine.geodesicArea(value.geometry, "square-feet");
  var squarefeet = number.format(sqft, { places: 1 });
  var acres = number.format(sqft / 43560, { places: 0 });
  formatString += "Acres:  " + acres;
  return formatString;
}