ng-options with simple array init

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I’m a little bit confused with Angular and ng-options.

I have a simple array and I want to init a select with it. But, I want that options value = label.

script.js

$scope.options = ['var1', 'var2', 'var3'];

html

<select ng-model="myselect" ng-options="o for o in options"></select>

What I get:

<option value="0">var1</option>
<option value="1">var2</option>
<option value="2">var3</option>

What I want:

<option value="var1">var1</option>
<option value="var2">var2</option>
<option value="var3">var3</option>

So I tried:

<select ng-model="myselect2" ng-init=0 ng-options="options[k] as v for (k,v) in options"></select>

<select ng-model="myselect3" ng-init=0 ng-options="b as b for b in options"></select>

(But it didn’t work.)

Edit:

My form is submitted externally, which is why I need ‘var1’ as the value instead of 0.

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