在AngularJS中轻松控制dom - 单击按钮,然后将焦点设置为输入元素
I have this angular code:
我有这个角度代码:
<div class="element-wrapper" ng-repeat="element in elements">
<div class="first-wrapper">
<div class="button" ng-click="doSomething(element,$event)">{{element.name}}</div>
</div>
<div class="second-wrapper">
<input type="text" value="{{element.value}}">
</div>
</div>
What I want to happen: when the user clicks the button - the input element will be focused.
我想要发生的事情:当用户点击按钮时 - 输入元素将被聚焦。
How do I find the input element after I click the button element and focus it?
单击按钮元素并将其聚焦后,如何找到输入元素?
I can do a function that looks like this:
我可以做一个看起来像这样的函数:
function doSomething(element,$event) {
//option A - start manipulating in the dark:
$event.srcElement.parentNode.childNodes[1]
//option B - wrapping it with jQuery:
$($event.srcElement).closest('.element-wrapper').find('input').focus();
}
Neither of them work - Is there a nicer Angular way to do it? Using functions such as .closest()
and .find()
as in jQuery?
它们都不起作用 - 有更好的角度方法吗?在jQuery中使用.closest()和.find()等函数?
Update:
更新:
I found this hack to be working (but it still doesn't seem like the correct solution):
我发现这个黑客工作(但它似乎仍然不是正确的解决方案):
function doSomething(element,$event) {
setTimeout(function(){
$($event.srcElement).closest('.element-wrapper').find('input').focus();
},0)
}
I am wrapping it with setTimeout so after Angular finishes all of its manipulations it focuses on the input element.
我用setTimeout包装它,所以在Angular完成它的所有操作后,它会聚焦在input元素上。
7 个解决方案
#1
37
DOM manipulation should be in a directive instead of the controller. I would define a focusInput
directive and use it on the button:
DOM操作应该在指令中而不是控制器中。我将定义一个focusInput指令并在按钮上使用它:
<div class="button" focus-input>{{element.name}}</div>
Directive:
指示:
app.directive('focusInput', function($timeout) {
return {
link: function(scope, element, attrs) {
element.bind('click', function() {
$timeout(function() {
element.parent().parent().find('input')[0].focus();
});
});
}
};
});
Plunker
Plunker
Since jqLite is rather limited in terms of DOM traversal methods, I had to use parent().parent()
. You may wish to use jQuery or some JavaScript methods.
由于jqLite在DOM遍历方法方面相当有限,我不得不使用parent()。parent()。您可能希望使用jQuery或一些JavaScript方法。
As you already found out, $timeout
is needed so that the focus()
method is called after the browser renders (i.e., finishes handling the click event).
正如您已经发现的那样,需要$ timeout,以便在浏览器呈现后调用focus()方法(即完成处理click事件)。
find('input')[0]
gives us access to the DOM element, allowing us to use the JavaScript focus()
method (rather than find('input').focus()
which would require jQuery).
find('input')[0]让我们可以访问DOM元素,允许我们使用JavaScript focus()方法(而不是find('input')。focus(),它需要jQuery)。
更多相关文章
- 与jQuery ajax post方法相比,fetch方法没有按预期发布
- 如何设置动画以使元素围绕圆圈移动?
- jQuery选择器,用于查找与选择器匹配的给定元素之后的第一个元素
- 动态定位Bootstrap工具提示(用于动态生成的元素)
- 在ExtJS中调用超类方法的更好方法
- contains和compareDocumentPosition 方法来确定是否HTML节点间的
- Javascript XML DOM将属性设置为特定元素
- 控制台在node . js中没有“debug”方法吗?
- 利用javascript动态加载头部出现点击事件与hover事件无效解决方