topic Re: How do I get a JSON name and value from and array? in ArcGIS JavaScript Maps SDK Questions

How do I get a JSON name and value from an array?

ChrisSergent — Tue, 16 Jun 2015 21:39:50 GMT

Robert Scheitlin, GISP helped me by providing this example to return an array based on value: JS Bin - Collaborative JavaScript Debugging

But how do I get each name and value in my array?

In this example a supportId of 691 is selected. I have a form that I want to update only one set of values at at time, so how do get just the name;

SIGNID and the value of 1169 so that I may set SIGNID's value to 1169 on the form. I basically want to update my form with all the values in the first element of the array, but I am not sure how to select JSON items. The following items are in my array and I will want to replace each as the user click previous or next.

Re: How do I get a JSON name and value from and array?

omega_cancer — Wed, 17 Jun 2015 12:59:38 GMT

It is basically returning feature Array.

Line that says:

resultItems.push("" + attr + ": " + featureAttributes[attr] + " ");

change it to

featureAttributes['OBJECTID'];

this would return all the OBJECTIDs. for accesing VISIBILITY of all items use this

featureAttributes['VISIBILITY'];

This is how you access it.

If you want to update control with specific OBJECTID:

Change line that says:

resultItems.push("" + attr + ": " + featureAttributes[attr] + " ");

For example we want to change SITEOBS from clear to Unclear of OBJECTID 9265

if(featureAttributes['OBJECTID'] == 9265) {

featureAttributes['SITEOBS'] = 'UnClear';

}

To update a control like text box:

if(featureAttributes['OBJECTID'] == 9265) {

document.getElementById('siteobsTxt').innerText = featureAttributes['SITEOBS'] ;

}

Hope it helped.

Re: How do I get a JSON name and value from and array?

ChrisSergent — Sun, 12 Dec 2021 03:58:19 GMT

This helps if I want to manually enter information in. I figured out what I needed to do. I needed to return the attr which is the attribute or name and the feature attribute which is the value of the attribute. I used the following code to do this:

console.log("Attribute: " + attr);
console.log("Feature Attribue: " + featureAttributes[attr]);