topic Re: How to pass variables to a deferred infoWindow function in ArcGIS JavaScript Maps SDK Questions

How to pass variables to a deferred infoWindow function

StephenLead — Wed, 25 May 2011 22:46:20 GMT

The sample at http://help.arcgis.com/en/webapi/javascript/arcgis/help/jssamples_start.htm#jssamples/widget_infowindowdeferred.html shows how to run a function to format the contents of an infoWindow.

It says "a function (getTextContent) is defined that will execute when a [feature] is clicked" and "In the getTextContent function we have access to the clicked graphic".

The content of the infoWindow is set with:

template.setContent(getTextContent);

and the function references the graphic object using:

function getTextContent(graphic) {

Is it possible to pass other variables into this function, so that they could be used within the function?

Thanks,
Steve

Re: How to pass variables to a deferred infoWindow function

derekswingley1 — Thu, 26 May 2011 02:16:59 GMT

I don't know of a way to do this...I think you're stuck referring to global variables or using a closure for vars you want to access inside your function.

Re: How to pass variables to a deferred infoWindow function

StephenLead — Thu, 26 May 2011 02:46:47 GMT

using a closure for vars you want to access inside your function.

Hi Derek,

Can you elaborate on that suggestion?

Thanks,
Steve

Re: How to pass variables to a deferred infoWindow function

StephenLead — Thu, 26 May 2011 02:53:14 GMT

Actually stack overflow has a good thread which should help me out here:

http://stackoverflow.com/questions/111102/how-do-javascript-closures-work

Re: How to pass variables to a deferred infoWindow function

derekswingley1 — Thu, 26 May 2011 03:13:10 GMT

Hey Steve,

I was implying that you could wrap the function you pass to setContent in another function. That way, variables you define in the function that wraps the function passed to setContent are accessible in the setContent function. It's not exactly what you asked for but is one way to avoid using globals.

Re: How to pass variables to a deferred infoWindow function

StephenLead — Sat, 11 Dec 2021 21:21:30 GMT

My brilliant colleague Danny came up with the resolution:

var infoTemplate = new esri.InfoTemplate();
infoTemplate.setTitle("title");
infoTemplate.x = "abc";
infoTemplate.setContent(buildChart);

function buildChart(graphic) {
        var x = this.x;

This allows you to access the value "abc" from within the buildChart function. Genius.