删除数组的第一项(例如从堆栈中弹出) [英] Remove first Item of the array (like popping from stack)
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问题描述
我有通过ng-repeat
创建的项目列表.我也有删除按钮.
单击删除按钮将删除数组的最后一项. 柱塞
I have list of items created via ng-repeat
. I also have Delete button.
Clicking delete button removes last item of the array one by one. Plunker
但是我要从第一个项目开始逐个删除项目.我怎样才能做到这一点?我用它来删除列表项:
But I want to remove items one by one starting from the first item. How can I do that? I used this for removing list Items:
$scope.index = 1;
$scope.remove = function(item) {
var index = $scope.cards.indexOf(item);
$scope.cards.splice(index, 1);
}
有什么方法可以从顶部移除?
Is there any way I can remove from the top?
推荐答案
最简单的方法是使用shift()
.如果您有数组,则shift
函数会将所有内容向左移动.
The easiest way is using shift()
. If you have an array, the shift
function shifts everything to the left.
var arr = [1, 2, 3, 4];
var theRemovedElement = arr.shift(); // theRemovedElement == 1
console.log(arr); // [2, 3, 4]
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