我正在使用dojo 1.10.4,我需要检测"内部"滑块元素中的事件onMouseStart
和onMouseStop
。在我的dijit/form/HorizontalSlider
内。
目前我正在尝试检测对象_movable
(它是dojo/dnd/Moveable
),但没有成功,收到错误:
Moveable.js:11 Uncaught TypeError: Cannot read property 'style' of undefined
onMouseStart
和onMouseStop
?实例: https://jsfiddle.net/9uo1doan/
require([
"dojo/dom",
"dijit/form/HorizontalSlider",
"dijit/form/TextBox",
"dojo/domReady!"
], function(dom, HorizontalSlider, TextBox) {
var slider = new HorizontalSlider({
name: "slider",
value: 5,
minimum: -10,
maximum: 10,
intermediateChanges: true,
style: "width:300px;",
onChange: function(value) {
dom.byId("sliderValue").value = value;
}
}, "slider");
slider._movable.onMoveStart(function(event) {
console.log('onMoveStart');
});
slider._movable.onMoveStop(function(event) {
console.log('onMoveStop');
});
slider._movable.onFirstMove(function(event) {
console.log('onFirstMove');
});
slider._movable.onMove(function(event) {
console.log('onMove');
});
slider._movable.onMoving(function(event) {
console.log('onMoving');
});
slider._movable.onMoved(function(event) {
console.log('onMoved');
});
});
<div id="slider"></div>
<p>
<input type="text" id="sliderValue" data-dojo-type="dijit/form/TextBox" />
参考:https://dojotoolkit.org/reference-guide/1.10/dojo/dnd/Moveable.html
我也尝试过没有成功:
on(slider._movable, 'moveStart', function(e){});
答案 0 :(得分:1)
我能够使用dojo/aspect
解决此问题。
基本上我找到的解决方案是在onMoveStart
上执行方法dojo/dnd/Moveable
后运行我的函数。
我仍然有兴趣了解为什么使用事件监听器的更传统方法无效。
现场演示:https://jsfiddle.net/8z6sm14j/
require([
"dojo/dom",
"dojo/on",
"dojo/aspect",
"dijit/form/HorizontalSlider",
"dijit/form/TextBox",
"dojo/domReady!"
], function(dom, on, aspect, HorizontalSlider, TextBox) {
debugger
var slider = new HorizontalSlider({
name: "slider",
value: 5,
minimum: -10,
maximum: 10,
intermediateChanges: true,
style: "width:300px;",
onChange: function(value) {
dom.byId("sliderValue").value = value;
}
}, "slider");
var result = document.getElementById('result');
aspect.after(slider._movable, 'onMoveStart', function(event) {
console.log('onMoveStart');
result.innerHTML = 'onMoveStart';
});
aspect.after(slider._movable, 'onMoveStop', function(event) {
console.log('onMoveStop');
result.innerHTML = 'onMoveStop';
});
});
<div id="slider"></div>
<input type="text" id="sliderValue" data-dojo-type="dijit/form/TextBox" />
<div id="result"></div>
仅供参考,在查看this module之后,我能够提出这个解决方案。