我想捕捉下面文本框上的回车键事件。为了更清楚地说明这一点，我使用ng-repeat填充tbody。下面是HTML:
<td><input type="number" id="closeqty{{$index}}" class="pagination-right closefield"
data-ng-model="closeqtymodel" data-ng-change="change($index)" required placeholder="{{item.closeMeasure}}" /></td>
这是我的模块:
angular.module('components', ['ngResource']);
我使用一个资源来填充表，我的控制器代码是:
function Ajaxy($scope, $resource) {
//controller which has resource to populate the table
}
当前回答
你需要添加一个指令，像这样:
Javascript:
app.directive('myEnter', function () {
return function (scope, element, attrs) {
element.bind("keydown keypress", function (event) {
if(event.which === 13) {
scope.$apply(function (){
scope.$eval(attrs.myEnter);
});
event.preventDefault();
}
});
};
});
HTML:
<div ng-app="" ng-controller="MainCtrl">
<input type="text" my-enter="doSomething()">
</div>
其他回答
你可以使用ng-keydown ="myFunction($event)"作为属性。
<input ng-keydown="myFunction($event)" type="number">
myFunction(event) {
if(event.keyCode == 13) { // '13' is the key code for enter
// do what you want to do when 'enter' is pressed :)
}
}
尝试
ng-keypress="console.log($event)"
ng-keypress="alert(123)"
什么也没为我做。
Strangley的例子在https://docs.angularjs.org/api/ng/directive/ngKeypress，它做ng-keypress="count = count + 1"，工作。
我找到了一个替代的解决方案，它有按Enter调用按钮的ng-click。
<input ng-model="..." onkeypress="if (event.which==13) document.getElementById('button').click()"/>
<button id="button" ng-click="doSomething()">Done</button>
你需要添加一个指令，像这样:
Javascript:
app.directive('myEnter', function () {
return function (scope, element, attrs) {
element.bind("keydown keypress", function (event) {
if(event.which === 13) {
scope.$apply(function (){
scope.$eval(attrs.myEnter);
});
event.preventDefault();
}
});
};
});
HTML:
<div ng-app="" ng-controller="MainCtrl">
<input type="text" my-enter="doSomething()">
</div>
另一种方法是使用标准指令ng-keypress="myFunct($event)"
然后在你的控制器中你可以有:
...
$scope.myFunct = function(keyEvent) {
if (keyEvent.which === 13)
alert('I am an alert');
}
...
我为我的项目做的一些代码示例。 基本上你向你的实体添加标签。 想象一下你有输入文本，在输入标签名称时，你会得到一个带有预加载标签的下拉菜单，你可以用箭头导航，然后用Enter选择:
HTML + AngularJS v1.2.0-rc.3
<div>
<form ng-submit="addTag(newTag)">
<input id="newTag" ng-model="newTag" type="text" class="form-control" placeholder="Enter new tag"
style="padding-left: 10px; width: 700px; height: 33px; margin-top: 10px; margin-bottom: 3px;" autofocus
data-toggle="dropdown"
ng-change="preloadTags()"
ng-keydown="navigateTags($event)">
<div ng-show="preloadedTags.length > 0">
<nav class="dropdown">
<div class="dropdown-menu preloadedTagPanel">
<div ng-repeat="preloadedTag in preloadedTags"
class="preloadedTagItemPanel"
ng-class="preloadedTag.activeTag ? 'preloadedTagItemPanelActive' : '' "
ng-click="selectTag(preloadedTag)"
tabindex="{{ $index }}">
<a class="preloadedTagItem"
ng-class="preloadedTag.activeTag ? 'preloadedTagItemActive' : '' "
ng-click="selectTag(preloadedTag)">{{ preloadedTag.label }}</a>
</div>
</div>
</nav>
</div>
</form>
</div>
Controller.js
$scope.preloadTags = function () {
var newTag = $scope.newTag;
if (newTag && newTag.trim()) {
newTag = newTag.trim().toLowerCase();
$http(
{
method: 'GET',
url: 'api/tag/gettags',
dataType: 'json',
contentType: 'application/json',
mimeType: 'application/json',
params: {'term': newTag}
}
)
.success(function (result) {
$scope.preloadedTags = result;
$scope.preloadedTagsIndex = -1;
}
)
.error(function (data, status, headers, config) {
}
);
} else {
$scope.preloadedTags = {};
$scope.preloadedTagsIndex = -1;
}
};
function checkIndex(index) {
if (index > $scope.preloadedTags.length - 1) {
return 0;
}
if (index < 0) {
return $scope.preloadedTags.length - 1;
}
return index;
}
function removeAllActiveTags() {
for (var x = 0; x < $scope.preloadedTags.length; x++) {
if ($scope.preloadedTags[x].activeTag) {
$scope.preloadedTags[x].activeTag = false;
}
}
}
$scope.navigateTags = function ($event) {
if (!$scope.newTag || $scope.preloadedTags.length == 0) {
return;
}
if ($event.keyCode == 40) { // down
removeAllActiveTags();
$scope.preloadedTagsIndex = checkIndex($scope.preloadedTagsIndex + 1);
$scope.preloadedTags[$scope.preloadedTagsIndex].activeTag = true;
} else if ($event.keyCode == 38) { // up
removeAllActiveTags();
$scope.preloadedTagsIndex = checkIndex($scope.preloadedTagsIndex - 1);
$scope.preloadedTags[$scope.preloadedTagsIndex].activeTag = true;
} else if ($event.keyCode == 13) { // enter
removeAllActiveTags();
$scope.selectTag($scope.preloadedTags[$scope.preloadedTagsIndex]);
}
};
$scope.selectTag = function (preloadedTag) {
$scope.addTag(preloadedTag.label);
};
CSS + Bootstrap v2.3.2
.preloadedTagPanel {
background-color: #FFFFFF;
display: block;
min-width: 250px;
max-width: 700px;
border: 1px solid #666666;
padding-top: 0;
border-radius: 0;
}
.preloadedTagItemPanel {
background-color: #FFFFFF;
border-bottom: 1px solid #666666;
cursor: pointer;
}
.preloadedTagItemPanel:hover {
background-color: #666666;
}
.preloadedTagItemPanelActive {
background-color: #666666;
}
.preloadedTagItem {
display: inline-block;
text-decoration: none;
margin-left: 5px;
margin-right: 5px;
padding-top: 5px;
padding-bottom: 5px;
padding-left: 20px;
padding-right: 10px;
color: #666666 !important;
font-size: 11px;
}
.preloadedTagItem:hover {
background-color: #666666;
}
.preloadedTagItemActive {
background-color: #666666;
color: #FFFFFF !important;
}
.dropdown .preloadedTagItemPanel:last-child {
border-bottom: 0;
}
