如何使用AngularJS将鼠标悬停在另一个div上时在一个div上更改类? [英] How to change the class on one div while hovering over another div with AngularJS?

问题描述

我想更改一个div的类，同时使用AngularJS指令将鼠标悬停在另一个div上.这是我到目前为止的内容 http://jsfiddle.net/E8nM5/38/

I want to change the class of one div while hovering over another div using AngularJS directives. Here is what I have so far http://jsfiddle.net/E8nM5/38/

HMTL

<div ng-controller="Ctrl" ng-app>
   <div ng-class="my-class">This div will change class when one hovers over bottom DIV </div>
   <br/>
   <div class="hover-div" ng-mouseenter="my-class = 'highlight'" ng-mouseleave="my-class = 'lowlight'">HOVER OVER ME TO CHANGE THE UPPER DIV's CLASS</div>    
</div>

CSS

div.highlight {
    padding: 10px;
    background: red;
    color: white;
}

div.lowlight {
    padding: 10px;
    background: blue;
    color: white;
}

div.hover-div {
    padding: 10px;
    background: green;
    color: white;
}

JS

function Ctrl($scope){
}

有什么想法吗?

推荐答案

将my-class更改为myclass(即破折号会引起问题).

Change my-class to myclass (i.e. the dash causes problem).

<div ng-controller="Ctrl" ng-app>
    <div ng-class="myclass">This div will change class when one hovers over bottom DIV </div>
    <br/>
    <div class="hover-div" ng-mouseenter="myclass = 'highlight'" ng-mouseleave="myclass = 'lowlight'">HOVER OVER ME TO CHANGE THE UPPER DIV's CLASS</div>    
</div>

已更新:之所以不允许在表达式中使用my-class是因为AngularJS将破折号视为减号，并试图以这种方式对其进行解析.显然，它无法解析语句my - class = 'highlight'.不幸的是，阅读AngularJS解析器代码后，我找不到帮助"区分破折号和减号的方法.

Updated: the reason my-class isn't allowed in the expression is because AngularJS treats the dash as minus symbol and tries to parse it that way. Apparently, it can't parse the statement my - class = 'highlight'. Unfortunately, after reading AngularJS parser code, I can't find a way to "help" it distinguish between dash and minus.

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