angularjs - getAttribute return unresolved -

i'm trying save attribute of input value variable.

this code:

var slidernumber = element.all(by.model('color.red')).get(1); var firstnum = slidernumber.getattribute('value').then(function(value) {     return value; });   //some code changes  slidernumber attribute       expect(slidernumber.getattribute('value')).toequal(firstnum + 1); 

this gives me error this:

expected '184' equal promise::433 ([[promisestatus]]: "pending")1.

i've tried:

var firstnum = function() {     return slidernumber.getattribute('value').then(function(value) {         return value;     }); } 

that didn't @ all. how resolve promise?

since .getattribute() returns promise, invoke callback asynchronously, need put test logic within callback:

var slidernumber = element.all(by.model('color.red')).get(1);  // initial value slidernumber.getattribute('value').then(function(value) {     // once we've got initial value, store it, proceed test     var initialvalue = parseint(value, 10);      //some code changes  slidernumber attribute        expect(slidernumber.getattribute('value')).toequal((initialvalue + 1).tostring()); }); 

you can't return value outside of callback, because callback may or may not called after rest of code.