javascript AngularJS ng-click 在 <li> 标签中不起作用
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AngularJS ng-click not working in <li> tag
提问by Alex Jolig
I'm making a pagination list image using AngularJS. ng-clickdoesn't work when I use it in <li>tag or even on <a>tag in it. But it's working fine in <button>tag.
我正在使用AngularJS. ng-click当我在<li>标签中甚至在其中的<a>标签上使用它时不起作用。但它在<button>标签中工作正常。
<div ng-controller="sampleCtrl" ng-app="myApp" data-ng-init="currentpage=1">
<h2>{{currentpage}}</h2>
<ul>
<li data-ng-repeat="image in images[currentpage-1]">
<img src='{{ image.img }}' width="150px" height="88px"/>
</li>
</ul>
<ul class="pagination">
<li data-ng-repeat="i in [1,2,3,4,5]" title="Page {{i}}">
<a href="#" data-ng-click="currentpage = currentpage + 1">{{i}}</a>
</li>
</ul>
<button data-ng-click="currentpage = currentpage + 1">Click me!</button>
</div>
Anyone knows what's the problem?
有谁知道是什么问题？
BTW, I tried this answer, but it's not working.
顺便说一句，我试过这个答案，但它不起作用。
回答by Shomz
It's because ng-repeatcreates a new scope for each repeated element. And when you're doing currentpage = currentpage + 1, you're most probably creating a new variable inside a child scope.
这是因为ng-repeat为每个重复的元素创建了一个新的作用域。当你在做的时候currentpage = currentpage + 1，你很可能是在子作用域内创建一个新变量。
Check your scopes. The solutions is usually something as simple as $parent.currentpage = $parent.currentpage + 1(to address the currentpagevariable in the parent scope, the sampleCtrlscope) if you don't want to rewrite the whole thing.
检查你的范围。如果您不想重写整个事情，解决方案通常很简单$parent.currentpage = $parent.currentpage + 1（解决currentpage父作用域中的变量，即sampleCtrl作用域）。
Another solution would be creating a function to increase the page number, that way you won't be creating any new child scope variables, but would inherit the increase function from the controller:
另一种解决方案是创建一个增加页码的函数，这样您就不会创建任何新的子作用域变量，而是从控制器继承增加函数：
<a href="#" data-ng-click="increasePage()">{{i}}</a>
And in your controller something like this:
在你的控制器中是这样的：
$scope.increasePage = function() {
currentpage++;
}
