angular 常用事件

2023-11-17 19:20:14 浏览数 (1)

ngClick

适用标签：所有 触发条件：单击

代码语言：javascript复制
#html 

	"LearnCtrl">
	
		"click()">click me
	
"click()">click me

#script angular.module('learnModule', [])

        .controller('LearnCtrl', function ($scope) { $scope.click = function () {
                alert('click');
            }
        });

ngDblclick

适用标签：所有 触发条件：双击

代码语言：javascript复制
#html 

	"LearnCtrl">
	
		"dblclick()">click me
	
"dblclick()">click me

#script angular.module('learnModule', [])

        .controller('LearnCtrl', function ($scope) { $scope.dblclick = function () {
                alert('click');
            }
        });

ngBlur

适用标签：

  • a
  • input
  • select
  • textarea

触发条件：失去焦点

代码语言：javascript复制
#html <div ng-controller="LearnCtrl"> <a href="" ng-blur="blur()">linka> <input type="text" ng-blur="blur()"/> <textarea cols="30" rows="10" ng-blur="blur()">textarea> <select ng-blur="blur()"> <option>----option> <option>jackyoption> <option>roseoption> select> div> #script
angular.module('learnModule', [])

        .controller('LearnCtrl', function ($scope) {
            $scope.blur = function () {
                alert('blur');
            }
        });

ngFocus

适用标签：

  • a
  • input
  • select
  • textarea

触发条件：获取焦点

代码语言：javascript复制
#html <div ng-controller="LearnCtrl"> <a href="" ng-focus="focus()">linka> <input type="text" ng-focus="focus()"/> <textarea cols="30" rows="10" ng-focus="focus()">textarea> <select ng-focus="focus()"> <option>----option> <option>jackyoption> <option>roseoption> select> div> #script
angular.module('learnModule', [])

        .controller('LearnCtrl', function ($scope) {
            $scope.focus= function () {
                alert('focus');
            }
        });

ngChange

适用标签：input 触发条件：model更新

输入框的内容改变并不代表model的值更新。按我的理解，一般当两个状态互相切换时，model值会更新。两个状态我称之为合法状态和不合法状态。

不合法的状态：输入的内容不符合type类型，如email类型。输入的内容不符合校验条件，如ngMinlength。不合法的状态下，model会被更新成undefined。

合法的状态：输入的内容是符合类型和校验条件的。

代码语言：javascript复制
#html 

	"LearnCtrl">"text" ng-model="text" ng-change="change()" ng-minlength="5"/>

#script angular.module('learnModule', [])

        .controller('LearnCtrl', function ($scope) { //$scope.text=''; $scope.change = function () {
                alert('change');
            }            
        });

初始化和不初始化text的条件下，change触发是不一样的哦，这里涉及到model初始化和更新机制。

ngCopy

适用标签：

  • a
  • input
  • select
  • textarea

官方api上说使用的标签是这些，我没明白a和select复制有啥子用。另外，我换个div实际上也能触发copy事件。一般常用的就是input和textarea。

触发条件：复制。鼠标右键复制和快捷键Ctrl C都会触发。

代码语言：javascript复制
#html 

	"LearnCtrl">"text" ng-copy="copy()"/>"30" rows="10" ng-copy="copy()">#script angular.module('learnModule', [])

        .controller('LearnCtrl', function ($scope) { $scope.copy = function () {
                alert('copy');
            }
        });

ngCut

适用标签：

  • a
  • input
  • select
  • textarea

触发条件：剪切。鼠标右键剪切和快捷键Ctrl X都会触发。

代码语言：javascript复制
#html "LearnCtrl">
    "text" ng-cut="cut()"/>
    "30"</span> rows=<span class="hljs-string">"10"</span> ng-cut=<span class="hljs-string">"cut()"</span>></div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.cut = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">()</span> </span>{
                alert(<span class="hljs-string">'cut'</span>);
            }
        });</pre>
<h2 id="articleHeader7">ngPaste</h2><p><strong>适用标签：</strong> </p><ul><li><strong>a</strong> </li><li><strong>input</strong> </li><li><strong>select</strong> </li><li><strong>textarea</strong> </li></ul><p><strong>触发条件：粘贴。鼠标右键粘贴和快捷键Ctrl V都会触发。</strong> </p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <input type=<span class="hljs-string">"text"</span> ng-paste=<span class="hljs-string">"paste()"</span>/>
    <textarea cols=<span class="hljs-string">"30"</span> rows=<span class="hljs-string">"10"</span> ng-paste=<span class="hljs-string">"paste()"</span>></div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.paste = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">()</span> </span>{
                alert(<span class="hljs-string">'paste'</span>);
            }
        });</pre>
<h2 id="articleHeader8">ngKeydown</h2><p><strong>适用标签：所有</strong> </p><p>个人感觉还是input和textarea比较常用</p><p><strong>触发条件：键盘按键按下</strong> </p><p>要把$event传过去，一般都是要判断按了哪个按键的。</p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <input type=<span class="hljs-string">"text"</span> ng-keydown=<span class="hljs-string">"keydown($event)"</span>/>
    <textarea cols=<span class="hljs-string">"30"</span> rows=<span class="hljs-string">"10"</span> ng-keydown=<span class="hljs-string">"keydown($event)"</span>></div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.keydown = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$event</span>)</span> </span>{
                alert(<span class="hljs-variable">$event</span>.keyCode);
            }
        });</pre>
<h2 id="articleHeader9">ngKeyup</h2><p><strong>适用标签：所有</strong> </p><p>个人感觉还是input和textarea比较常用</p><p><strong>触发条件：键盘按键按下并松开</strong> </p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <input type=<span class="hljs-string">"text"</span> ng-keyup=<span class="hljs-string">"keyup($event)"</span>/>
    <textarea cols=<span class="hljs-string">"30"</span> rows=<span class="hljs-string">"10"</span> ng-keyup=<span class="hljs-string">"keyup($event)"</span>></div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.keyup = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$event</span>)</span> </span>{
                alert(<span class="hljs-variable">$event</span>.keyCode);
            }
        });</pre>
<h2 id="articleHeader10">ngKeypress</h2><p><strong>适用标签：所有</strong> </p><p>个人感觉还是input和textarea比较常用</p><p><strong>触发条件：键盘按键按下</strong> </p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <input type=<span class="hljs-string">"text"</span> ng-keypress=<span class="hljs-string">"keypress($event)"</span>/>
    <textarea cols=<span class="hljs-string">"30"</span> rows=<span class="hljs-string">"10"</span> ng-keypress=<span class="hljs-string">"keypress($event)"</span>></div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.keypress = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$event</span>)</span> </span>{
                alert(<span class="hljs-variable">$event</span>.keyCode);
            }
        });</pre>
<h2 id="articleHeader11">keydown，keypress，keydown三者区别</h2><h3 id="articleHeader12">引发事件的按键</h3><p>非字符键不会引发 KeyPress 事件，但非字符键却可以引发 KeyDown 和 KeyUp 事件。</p><h3 id="articleHeader13">事件引发的时间</h3><p>KeyDown 和 KeyPress 事件在按下键时发生，KeyUp 事件在释放键时发生。</p><h3 id="articleHeader14">事件发生的顺序</h3><p>KeyDown -> KeyPress -> KeyUp。如果按一个键很久才松开，发生的事件为：KeyDown -> 
KeyPress -> KeyDown -> KeyPress -> KeyDown -> KeyPress ->
 ... -> KeyUp。</p><ul><li>KeyDown触发后，不一定触发KeyUp，当KeyDown 按下后，拖动鼠标，那么将不会触发KeyUp事件。</li><li>KeyPress主要用来捕获数字(注意：包括Shift 数字的符号)、字母（注意：包括大小写）、小键盘等除了F1-12、SHIFT、
Alt、Ctrl、Insert、Home、PgUp、Delete、End、PgDn、ScrollLock、Pause、NumLock、{菜单
键}、{开始键}和方向键外的ANSI字符。</li><li>KeyDown 和KeyUp 通常可以捕获键盘除了PrScrn所有按键(这里不讨论特殊键盘的特殊键）。</li><li>KeyPress 只能捕获单个字符。</li><li>KeyDown 和KeyUp 可以捕获组合键。</li><li>KeyPress 可以捕获单个字符的大小写。</li><li>KeyDown和KeyUp 对于单个字符捕获的KeyValue 都是一个值，也就是不能判断单个字符的大小写。</li><li>KeyPress 不区分小键盘和主键盘的数字字符。</li><li>KeyDown 和KeyUp 区分小键盘和主键盘的数字字符。</li><li>其中PrScrn 按键KeyPress、KeyDown和KeyUp 都不能捕获。</li></ul><h2 id="articleHeader15">ngMousedown</h2><p><strong>适用标签：所有</strong><br /> <strong>触发条件：鼠标按下，左右中间按下都会触发</strong> </p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <button ng-mousedown=<span class="hljs-string">"mousedown($event)"</span>>button</div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.mousedown = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$event</span>)</span> </span>{
                alert(<span class="hljs-variable">$event</span>.which);
            }
        });</pre>
<h2 id="articleHeader16">ngMouseup</h2><p><strong>适用标签：所有</strong><br /> <strong>触发条件：鼠标按下弹起，左右中间按下弹起都会触发</strong> </p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <button ng-mouseup=<span class="hljs-string">"mouseup($event)"</span>>button</div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.mouseup = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$event</span>)</span> </span>{
                alert(<span class="hljs-variable">$event</span>.which);
            }
        });</pre>
<h2 id="articleHeader17">ngMouseenter</h2><p><strong>适用标签：所有</strong><br /> <strong>触发条件：鼠标进入</strong> </p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <button ng-mouseenter=<span class="hljs-string">"mouseenter()"</span>>button</div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.mouseenter = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">()</span> </span>{
                alert(<span class="hljs-string">'mouseenter'</span>);
            }
        });</pre>
<h2 id="articleHeader18">ngMouseleave</h2><p><strong>适用标签：所有</strong><br /> <strong>触发条件：鼠标离开</strong> </p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <button ng-mouseleave=<span class="hljs-string">"mouseleave()"</span>>button</div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.mouseleave = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">()</span> </span>{
                alert(<span class="hljs-string">'mouseleave'</span>);
            }
        });</pre>
<h2 id="articleHeader19">ngMousemove</h2><p><strong>适用标签：所有</strong><br /> <strong>触发条件：鼠标移动</strong> </p>
<pre class="hljs php"><span class="hljs-comment">#html</span> <div ng-controller=<span class="hljs-string">"LearnCtrl"</span>>
    <button ng-mousemove=<span class="hljs-string">"mousemove()"</span>>button</div><span class="hljs-comment">#script</span> angular.module(<span class="hljs-string">'learnModule'</span>, [])

        .controller(<span class="hljs-string">'LearnCtrl'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(<span class="hljs-variable">$scope</span>)</span> </span>{ <span class="hljs-variable">$scope</span>.mousemove = <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">()</span> </span>{
                alert(<span class="hljs-string">'mousemove'</span>);
            }
        });</pre>
</div>
</pre><!--END .entry-content -->
class function scope string 事件

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