Javascript Knockoutjs-单击按钮打开选择下拉列表
有没有办法在单击其他按钮时打开下拉列表?给你 JSJavascript Knockoutjs-单击按钮打开选择下拉列表,javascript,jquery,knockout.js,dom-events,Javascript,Jquery,Knockout.js,Dom Events,有没有办法在单击其他按钮时打开下拉列表?给你 JS function VM() { var message = ko.observable("hello!!"); function onButtonClick() { var dropdown = document.getElementById('dropdown'); showDropDown(dropdown); } function showDropDown(element){ var event;
function VM() {
var message = ko.observable("hello!!");
function onButtonClick() {
var dropdown = document.getElementById('dropdown');
showDropDown(dropdown);
}
function showDropDown(element){
var event;
event = document.createEvent('MouseEvents');
event.initMouseEvent('mousedown', true, true, window);
element.dispatchEvent(event);
}
return {
message: message,
onButtonClick:onButtonClick
}
}
ko.applyBindings(new VM());
HTML
<button data-bind="click: onButtonClick">
Button
</button>
<select id="dropdown" >
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>
按钮
1.
2.
3.
4.
给你!解决方案
更新了淘汰赛的解决方案给你
JS
function VM() {
var message = ko.observable("hello!!");
function onButtonClick() {
var dropdown = document.getElementById('dropdown');
showDropDown(dropdown);
}
function showDropDown(element){
var event;
event = document.createEvent('MouseEvents');
event.initMouseEvent('mousedown', true, true, window);
element.dispatchEvent(event);
}
return {
message: message,
onButtonClick:onButtonClick
}
}
ko.applyBindings(new VM());
HTML
<button data-bind="click: onButtonClick">
Button
</button>
<select id="dropdown" >
<option>1</option>
<option>2</option>
<option>3</option>
<option>4</option>
</select>
按钮
1.
2.
3.
4.
给你!解决方案
更新了来自for Knockout的解决方案当绑定点击偶数时,您可以触发事件处理程序中另一个元素的下拉。当绑定点击偶数时,您可以触发事件处理程序中另一个元素的下拉。感谢帮助:)这不再适用于Chrome v。53.0.2785.116. 有什么更新吗?谢谢你的帮助:)这在Chrome v上已经不起作用了。53.0.2785.116. 有更新吗?