Ctr*_*roy 4 jquery html5 partial-page-refresh
我看到Lifehacker能够在使用AJAX更新部分页面时更改URL.我想这可以使用HTML5或history.js插件实现,但我想lifehacker既不使用也不使用.
有没有人知道他们是怎么做到的?我是AJAX的新手,只是设法使用Ajax更新页面的一部分.
谢谢@Robin Anderson详细的逐步算法.我试了一下它工作正常.但是,在我可以在生产中测试它之前,我想用你运行我的代码.我做对了吗?
<script type="text/javascript">
var httpRequest;
var globalurl;
function makeRequest(url) {
globalurl = url;
/* my custom script that retrieves original page without formatting (just data, no templates) */
finalurl = '/content.php?fname=' + url ;
if(window.XMLHttpRequest){httpRequest=new XMLHttpRequest}else if(window.ActiveXObject){try{httpRequest=new ActiveXObject("Msxml2.XMLHTTP")}catch(e){try{httpRequest=new ActiveXObject("Microsoft.XMLHTTP")}catch(e){}}}
/* if no html5 support, just load the page without ajax*/
if (!(httpRequest && window.history && window.history.pushState)) {
document.href = url;
return false;
}
httpRequest.onreadystatechange = alertContents;
alert(finalurl); /* to make sure, content is being retrieved from ajax */
httpRequest.open('GET', finalurl);
httpRequest.send();
}
/* for support to back button and forward button in browser */
window.onpopstate = function(event) {
if (event.state !== null) {
document.getElementById("ajright").innerHTML = event.state.data;
} else {
document.location.href = globalurl;
return false;
};
};
/* display content in div */
function alertContents() {
if (httpRequest.readyState === 4) {
if (httpRequest.status === 200) {
var stateObj = { data: httpRequest.responseText};
history.pushState(stateObj, "", globalurl);
document.getElementById("ajright").innerHTML = httpRequest.responseText;
} else {
alert('There was a problem with the request.');
}
}
}
</script>
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PS:我不知道如何在评论中粘贴代码,所以我在这里添加了它.
为了在浏览器中使用历史API,即使它是HTML5功能,也不要求将标记设置为HTML5.
使用AJAX加载所有页面转换的一个非常快速和简单的实现是:
这将很容易实现,易于管理缓存并与Google的机器人配合良好,缺点是不是"优化",当您更改时,它将是响应的一些开销(与更复杂的解决方案相比)页面.
也将具有向后兼容性,因此旧版浏览器或"非JavaScript访问者"将获得正常的页面加载.
关于这个主题的有趣链接
编辑:
值得一提的另一件事是你不应该将它与ASP .Net Web Forms应用程序一起使用,可能会搞砸回发处理.
代码添加:
我已经整理了一个这个功能的小演示,你可以在这里找到.
它只是使用HTML,Javascript(jQuery)和一小部分CSS,我建议你在使用之前测试它.但是我已经在Chrome中检查了一些它似乎工作正常.
我建议的一些测试是:
这是我用来实现这个的javascript,您可以在上面的演示中找到完整的源代码.
/*
The arguments are:
url: The url to pull new content from
doPushState: If a new state should be pushed to the browser, true on links and false on normal state changes such as forward and back.
*/
function changePage(url, doPushState, defaultEvent)
{
if (!history.pushState) { //Compatability check
return true; //pushState isn't supported, fallback to normal page load
}
if (defaultEvent != null) {
defaultEvent.preventDefault(); //Someone passed in a default event, stop it from executing
}
if (doPushState) { //If we are supposed to push the state or not
var stateObj = { type: "custom" };
history.pushState(stateObj, "Title", url); //Push the new state to the browser
}
//Make a GET request to the url which was passed in
$.get(url, function(response) {
var newContent = $(response).find(".content"); //Find the content section of the response
var contentWrapper = $("#content-wrapper"); //Find the content-wrapper where we are supposed to change the content.
var oldContent = contentWrapper.find(".content"); //Find the old content which we should replace.
oldContent.fadeOut(300, function() { //Make a pretty fade out of the old content
oldContent.remove(); //Remove it once it is done
contentWrapper.append(newContent.hide()); //Add our new content, hidden
newContent.fadeIn(300); //Fade it in!
});
});
}
//We hook up our events in here
$(function() {
$(".generated").html(new Date().getTime()); //This is just to present that it's actually working.
//Bind all links to use our changePage function except rel="external"
$("a[rel!='external']").live("click", function (e) {
changePage($(this).attr("href"), true, e);
});
//Bind "popstate", it is the browsers back and forward
window.onpopstate = function (e) {
if (e.state != null) {
changePage(document.location, false, null);
}
}
});
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