我使用以下内容来获取网址,例如domain.com/#2然后我使用该片段将用户重定向到domain.com/?page=2。
但是,有时用户可能只会显示一个哈希而没有数字,或者我可能会在点击表单时使用网址中的关键字,例如/#反馈。
问题是这会导致我使用的代码出现问题。我如何修改提供的代码,只有在我想要URL的情况下才会对URL起作用。
一种方法是检查片段值是否为'反馈'例如,但我想为用户提供一种方法,可能只需创建空白片段值即可输入值或奇数形式。
如果网址不包含#(然后是数字)或给定的网页ID,则不执行任何操作。
所以URL:
domain.com/#2
将重定向到:
domain.com/?page=2
或者如果URL已经有?page =(数字),它会将片段值添加到数字中,以便:
domain.com/?page=2#2
将指示:
domain.com/?page=4
我最初认为它检查片段是否为数字,否则将其视为0。
所以这个:
/*
Check if the URL has a # value. When a user visits a page from another / reloads the page and
it has a # fragment included, this code converts the # value and redirects the user to a page
such as domain.php?page=THE FRAGMENT VALUE
If the URL already contains a page value, it adds that value to the hash value and will
redirect the user to the new value page.
*/
// First get the page URL and split it via # and ? signs
var parts = location.href.split('#');
var queryParameters = location.search.split('?');
// Now we get the value of the page value in the URL if there is one
var pageNumber = 0;
for(var i = 0; i < queryParameters.length; i++)
{
var keyvaluePair = queryParameters[i].split('=');
if(keyvaluePair[0] == 'page')
{
pageNumber = keyvaluePair[1];
break;
}
}
// Next we check how many parts there are in the URL and if this a value, we add it to the current page
// and redirect to that new page number
if(parts.length > 1)
{
var params = parts[0].split('?');
var mark = '?';
if(params.length > 1)
{
mark = '?';
}
var newPageNumber = parseInt(parts[1], 10) + parseInt(pageNumber, 10);
location.href = mark + 'page=' + newPageNumber;
}
答案 0 :(得分:0)
首先为页码设置一个全局变量;然后检查“page”查询字符串变量是否已设置且是否为数字(source)。
var pageNum = 0;
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
if(!isNaN(getParameterByName('page'))) pageNum += parseInt(getParameterByName('page'));
然后检查window.location.hash
是否有哈希值。如果是数字,请将其添加到pageNum
。否则检查它是否是一个命令。
if(!isNaN(parseInt(window.location.hash.replace(/#/, '')))) {
pageNum += parseInt(window.location.hash.replace(/#/, ''));
} else if(window.location.hash != null) {
switch(window.location.hash) {
case "feedback":
window.location.href = 'domain.com/feedback';
break;
default:
// do nothing?
break;
}
}
最后,如果pageNum > 0
,则重定向用户。
if(pageNum > 0) window.location.href = 'domain.com/?page=' + pageNum;
完整代码:
var pageNum = 0;
function getParameterByName(name) {
name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
results = regex.exec(location.search);
return results == null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
}
if(!isNaN(getParameterByName('page'))) pageNum += parseInt(getParameterByName('page'));
if(!isNaN(parseInt(window.location.hash.replace(/#/, '')))) {
pageNum += parseInt(window.location.hash.replace(/#/, ''));
} else if(window.location.hash != null) {
switch(window.location.hash) {
case "feedback":
window.location.href = 'domain.com/feedback';
break;
default:
// do nothing?
break;
}
}
if(pageNum > 0) window.location.href = 'domain.com/?page=' + pageNum;