[英]Combining two functions not working
我試圖在下面的代碼中組合兩個函數。 所有似乎都工作,除了我無法獲得變量currentImage.metaData.something
在第二個函數中工作。 我感謝你的建議。
<script type="text/javascript" src="code.photoswipe-2.1.5.min.js"></script>
<script type="text/javascript">
(function(window, PhotoSwipe){
document.addEventListener('DOMContentLoaded', function(){
var
options = {
getImageMetaData: function(el){
return {
href: el.getAttribute('href'),
something: el.getAttribute('data-something'),
anotherThing: el.getAttribute('data-another-thing')
}
}
},
instance = PhotoSwipe.attach( window.document.querySelectorAll('#Gallery a'), options );
instance.addEventHandler(PhotoSwipe.EventTypes.onDisplayImage, function(e){
var currentImage = instance.getCurrentImage();
console.log(currentImage.metaData.something);
console.log(currentImage.metaData.anotherThing);
});
}, false);
}(window, window.Code.Util, window.Code.PhotoSwipe));
(function(window, Util, PhotoSwipe){
document.addEventListener('DOMContentLoaded', function(){
var
sayHiEl,
sayHiClickHandler = function(e){
alert('yo!!!');
}
options = {
getToolbar: function(){
return '<div class="ps-toolbar-close" style="padding-top: 12px;">Close</div><div class="ps-toolbar-play" style="padding-top: 12px;">Play</div><div class="ps-toolbar-previous" style="padding-top: 12px;">Previous</div><div class="ps-toolbar-next" style="padding-top: 12px;">Next</div><div class="say-hi" style="padding-top: 12px;">Say Hi!</div>';
// NB. Calling PhotoSwipe.Toolbar.getToolbar() wil return the default toolbar HTML
}
},
instance = PhotoSwipe.attach( window.document.querySelectorAll('#Gallery a'), options );
// onShow - store a reference to our "say hi" button
instance.addEventHandler(PhotoSwipe.EventTypes.onShow, function(e){
sayHiEl = window.document.querySelectorAll('.say-hi')[0];
});
// onToolbarTap - listen out for when the toolbar is tapped
instance.addEventHandler(PhotoSwipe.EventTypes.onToolbarTap, function(e){
if (e.toolbarAction === PhotoSwipe.Toolbar.ToolbarAction.none){
if (e.tapTarget === sayHiEl || Util.DOM.isChildOf(e.tapTarget, sayHiEl)){
alert(currentImage.metaData.anotherThing);
}
}
});
// onBeforeHide - clean up
instance.addEventHandler(PhotoSwipe.EventTypes.onBeforeHide, function(e){
sayHiEl = null;
});
}, false);
}(window, window.Code.Util, window.Code.PhotoSwipe));
您在第一個函數中聲明了currentImage
變量。 使用var
關鍵字創建的變量是函數范圍的,這意味着它在函數外部不可見(因此在第二個函數中不可見,在本例中)。
我可能會建議一些更通用的代碼重組,但一個簡單的解決方法是將變量聲明在兩個函數之上,使兩者都可見。
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