javascript - Angular scope's variable from directive not syncing in ng-style - Stack Overflow

admin管理员组

文章数量:1332377

i got a very weird situation here.

At first, I wrote a simple directive.

mublABase.directive('parentSize', function() {
    return {
        link : function(scope, elem, attrs) {
            scope.parentSize = {
                width : elem.parent().width(),
                height : elem.parent().height()
            }
        }
    }
});

And this is my simplified html code

<input type="text" ng-model="parentSize.width"> //for test No.1
<div parent-size class="no-border">
    {{parentSize.width}} //for test No.2
    <span class="glyphicon glyphicon-leaf" ng-style="{'font-size':'{{parentSize.width}}px'}"></span> //this is the problem No.3
</div>

And result is broken. No.1 input and No.2 text says width is 285. But at No.3, that leaf icon's size is just default size.
(Sorry for not posting result image. I'm very noob here and i don't have any reputation)

How can it happened? And much importantly, how can i solve it?

i got a very weird situation here.

At first, I wrote a simple directive.

mublABase.directive('parentSize', function() {
    return {
        link : function(scope, elem, attrs) {
            scope.parentSize = {
                width : elem.parent().width(),
                height : elem.parent().height()
            }
        }
    }
});

And this is my simplified html code

<input type="text" ng-model="parentSize.width"> //for test No.1
<div parent-size class="no-border">
    {{parentSize.width}} //for test No.2
    <span class="glyphicon glyphicon-leaf" ng-style="{'font-size':'{{parentSize.width}}px'}"></span> //this is the problem No.3
</div>

And result is broken. No.1 input and No.2 text says width is 285. But at No.3, that leaf icon's size is just default size.
(Sorry for not posting result image. I'm very noob here and i don't have any reputation)

How can it happened? And much importantly, how can i solve it?

• javascript
• angularjs
• angularjs-directive
• ng-style

Share Improve this question Follow asked Dec 4, 2014 at 3:51 MoonriseMoonrise 11311 silver badge77 bronze badges 1

• 1 ng-style="{ 'font-size' : parentSize.width }" – tymeJV Commented Dec 4, 2014 at 3:55

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 8

You have just got your ng-style syntax confused.

The value for each of the properties of the object in ng-style is an AngularJS expression, which means you can refer directly to scope properties.

Change it to ng-style="{'font-size': parentSize.width + 'px'}".

本文标签： javascriptAngular scope39s variable from directive not syncing in ngstyleStack Overflow