快速入门:添加菜单 (HTML)
[ 本文适用于编写 Windows 运行时应用的 Windows 8.x 和 Windows Phone 8.x 开发人员。如果你要针对 Windows 10 进行开发,请参阅 最新文档 ]
本快速入门介绍如何创建用来向用户显示命令的菜单。(仅限 Windows)
先决条件
使用 JavaScript 构建你的第一个 Windows 应用商店应用
创建菜单
在以下示例中,当用户按下“Respond”按钮时,会在该按钮的上方出现一个菜单。菜单是适用于 JavaScript、WinJS.UI.Menu 且必须为 <body>
元素直接子项的 Windows 库中的一个控件。
<body>
<!-- Button that launches the respond menu. -->
<button id="respondButton" aria-haspopup="true">Respond</button>
<!-- Respond menu. -->
<div id="respondFlyout" data-win-control="WinJS.UI.Menu">
<button data-win-control="WinJS.UI.MenuCommand" data-win-options="{id:'alwaysSaveMenuItem',label:'Always save drafts',type:'toggle', selected:'true'}"></button>
<hr data-win-control="WinJS.UI.MenuCommand" data-win-options="{id:'separator',type:'separator'}" />
<button data-win-control="WinJS.UI.MenuCommand" data-win-options="{id:'replyMenuItem',label:'Reply'}"></button>
<button data-win-control="WinJS.UI.MenuCommand" data-win-options="{id:'replyAllMenuItem',label:'Reply All'}"></button>
<button data-win-control="WinJS.UI.MenuCommand" data-win-options="{id:'forwardMenuItem',label:'Forward'}"></button>
</div>
</body>
// Initialize WinJS controls.
WinJS.UI.processAll();
// Initialize event listeners.
document.getElementById("respondButton").addEventListener("click", showRespondFlyout, false);
document.getElementById("alwaysSaveMenuItem").addEventListener("click", alwaysSave, false);
document.getElementById("replyMenuItem").addEventListener("click", reply, false);
document.getElementById("replyAllMenuItem").addEventListener("click", replyAll, false);
document.getElementById("forwardMenuItem").addEventListener("click", forward, false);
// Command and menu functions.
function showFlyout(flyout, anchor, placement) {
flyout.winControl.show(anchor, placement);
}
function showRespondFlyout() {
showFlyout(respondFlyout, respondButton, "bottom");
}
function hideFlyout(flyout) {
flyout.winControl.hide();
}
function alwaysSave() {
var alwaysSaveState = document.getElementById("alwaysSaveMenuItem").winControl.selected;
}
function reply() {
hideFlyout(respondFlyout);
}
function replyAll() {
hideFlyout(respondFlyout);
}
function forward() {
hideFlyout(respondFlyout);
}
摘要
在本快速入门中,你创建了一个用来向用户显示命令的菜单。