Angular.js:在页面加载时设置元素高度 [英] Angular.js: set element height on page load

问题描述

我是 AngularJS 新手.我想创建高度取决于窗口高度的网格(使用 ng-grid).$('.gridStyle').height($(window).height() - 100);

我已经写了指令:

app.directive('resize', function($window) {返回函数(范围，元素){函数应用高度(){scope.height = $window.innerHeight;$('.gridStyle').height(scope.height - 100);}angular.element($window).bind('resize', function() {范围.$应用(函数(){应用高度()；});});应用高度()；};});

这在我调整浏览器窗口大小时效果很好，但在第一次加载网站时不会应用样式.我在哪里可以放置代码来初始化高度?

解决方案

我在为自己寻找相同问题的解决方案时看到了您的帖子.我使用基于许多帖子的指令将以下解决方案放在一起.你可以在这里尝试(尝试调整浏览器窗口的大小):http://jsfiddle.net/zbjLh/2/>

查看:

window.height: {{windowHeight}} 
window.width: {{windowWidth}} 

控制器:

var app = angular.module('miniapp', []);功能 AppController($scope) {/* 逻辑在这里 */}app.directive('resize', function ($window) {返回函数(范围，元素){var w = angular.element($window);scope.getWindowDimensions = 函数 () {return { 'h': w.height(), 'w': w.width() };};scope.$watch(scope.getWindowDimensions, function (newValue, oldValue) {scope.windowHeight = newValue.h;scope.windowWidth = newValue.w;scope.style = 函数 () {返回 {'高度':(newValue.h - 100) + 'px','宽度':(newValue.w - 100) + 'px'};};}， 真的);w.bind('resize', function () {范围.$应用()；});}})

仅供参考，我最初让它在控制器中工作(http://jsfiddle.net/zbjLh/)，但后来阅读发现从 Angular 的角度来看这很不酷，所以我现在将其转换为使用指令.

重要的是，请注意 'watch' 函数末尾的 true 标志，用于比较 getWindowDimensions 返回对象的相等性(如果不使用对象，则删除或更改为 false).

I'm AngularJS newbie. I want to create grid (using ng-grid) which height depends on window height ie. $('.gridStyle').height($(window).height() - 100);

I have written directive:

app.directive('resize', function($window) {

    return function(scope, element) {

        function applyHeight() {
            scope.height = $window.innerHeight;
            $('.gridStyle').height(scope.height - 100);
        }

        angular.element($window).bind('resize', function() {
            scope.$apply(function() {
                applyHeight();
            });
        });

        applyHeight();
    };
});

This works well when I resize browser window but style is not applied when site is loaded for the first time. Where can I put code to initalize height?

解决方案

I came across your post as I was looking for a solution to the same problem for myself. I put together the following solution using a directive based on a number of posts. You can try it here (try resizing the browser window): http://jsfiddle.net/zbjLh/2/

View:

<div ng-app="miniapp" ng-controller="AppController" ng-style="style()" resize>
    window.height: {{windowHeight}} <br />
    window.width: {{windowWidth}} <br />
</div>

Controller:

var app = angular.module('miniapp', []);

function AppController($scope) {
    /* Logic goes here */
}

app.directive('resize', function ($window) {
    return function (scope, element) {
        var w = angular.element($window);
        scope.getWindowDimensions = function () {
            return { 'h': w.height(), 'w': w.width() };
        };
        scope.$watch(scope.getWindowDimensions, function (newValue, oldValue) {
            scope.windowHeight = newValue.h;
            scope.windowWidth = newValue.w;

            scope.style = function () {
                return { 
                    'height': (newValue.h - 100) + 'px',
                    'width': (newValue.w - 100) + 'px' 
                };
            };

        }, true);

        w.bind('resize', function () {
            scope.$apply();
        });
    }
})

FYI I originally had it working in a controller (http://jsfiddle.net/zbjLh/), but from subsequent reading found that this is uncool from Angular's perspective, so I have now converted it to use a directive.

Importantly, note the true flag at the end of the 'watch' function, for comparing the getWindowDimensions return object's equality (remove or change to false if not using an object).

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