页面处于激活状态执行一系列操作

使用Page Visibility 监听页面是否处于激活(可见)状态

一般用于在切换页面回到该页面，进行页面刷新

// 当页面处于激活时刷新页面
Listener(){
	var hidden = "hidden";
	var that = this;
	//各个浏览器属性兼容
	if (hidden in document)
		document.addEventListener("visibilitychange", onchange);
	else if ((hidden = "mozHidden") in document)
		document.addEventListener("mozvisibilitychange", onchange);
	else if ((hidden = "webkitHidden") in document)
		document.addEventListener("webkitvisibilitychange", onchange);
	else if ((hidden = "msHidden") in document)
		document.addEventListener("msvisibilitychange", onchange);

	else if ("onfocusin" in document)
		document.onfocusin = document.onfocusout = onchange;

	else
		window.onpageshow = window.onpagehide = window.onfocus = window.onblur = onchange;

	//主要功能代码
	//网页状态改变事件
	function onchange(evt) {
		if(document[hidden]){
			document.title = "普洱茶";
		}else{
			document.title = "普洱茶";
			console.log('truetruetrue');
			that.getCart();
			that.loadAjax(1);
			that.indexmode();
		}
	}


	if (document[hidden] !== undefined)
		onchange({
			type: document[hidden] ? "blur" : "focus"
		});
},

赏

谢谢你请我吃糖果

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