如何动态设置元素的高度? [英] how to set dynamically height to element?

问题描述

我试图在我的演示中为元素动态设置高度.我会告诉你问题我在演示中采用静态或恒定的高度值.我采用 250px 恒定值

 #wrapper{背景图片:网址(https://dl.dropboxusercontent.com/s/nz1fzunlqzzz7uo/login_bg.png?dl=0)；最小高度:250px；背景重复:不重复；}

但是我需要动态添加这个高度.我从这个高度得到了

$scope.hgt =$window.innerHeight/3;警报($scope.hgt)

但我需要将 $scope.hgt 设置为 min-height 到 #wrapper div 动态?.我不想采用 div 高度的静态值.我想动态添加.

这是我的代码http://codepen.io/anon/pen/bdgawo

与我们在 jquery 中所做的一样，我需要在 angular 中做同样的事情

$('#wrapper').css('height': $window.innerHeight/3)

解决方案

你可以简单地通过自己的指令实现这一点，该指令将动态添加 css

标记

<h4 class="headerTitle">告诉妈妈的名字</h4>

指令

.directive('setHeight', function($window){返回{链接:功能(范围，元素，属性){element.css('height', $window.innerHeight/3 + 'px');//element.height($window.innerHeight/3);}}})

更好的解决方案是您可以使用期望 JSON 格式值的 ng-style 指令.

<div id="wrapper" ng-style="{height: hgt+ 'px'}"><h4 class="headerTitle">告诉妈妈的名字</h4>

工作代码笔

I am trying to set dynamically height to element in my demo .I will tell you issue I am taking static or constant value of height in my demo .I take 250px constant value

 #wrapper{
    background-image: url(https://dl.dropboxusercontent.com/s/nz1fzunlqzzz7uo/login_bg.png?dl=0);
    min-height: 250px;
    background-repeat: no-repeat; 
}

But I need to add this height dynamically .I got height from this

$scope.hgt =$window.innerHeight/3;
alert($scope.hgt)

But I need to set $scope.hgt to min-height to #wrapper div dynamically?.I don't want to take static value of div height .I want to add dynamically .

here is my code http://codepen.io/anon/pen/bdgawo

same thing i need to in angular what we do in jquery

$('#wrapper').css('height': $window.innerHeight / 3)

解决方案

You could simply achieve this by own directive which will add css dynamically

Markup

<div id="wrapper" set-height>
  <h4 class="headerTitle">tell Mother name</h4>
</div>

Directive

.directive('setHeight', function($window){
  return{
    link: function(scope, element, attrs){
        element.css('height', $window.innerHeight/3 + 'px');
        //element.height($window.innerHeight/3);
    }
  }
})

The better solution would be you could use ng-style directive that expects the values in JSON format.

<div id="wrapper" ng-style="{height: hgt+ 'px'}">
  <h4 class="headerTitle">tell Mother name</h4>
</div>

Working Codepen

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