How to strip the last part of a query string
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27-09-2019 - |
Question
I need to isolate an id in a string using javascript. I've managed to get to the part where I get to the id but then I want to be able to string the rest of the string so that it only leaves the id number such as this:
var urlString = "http://mysite.co.za/wine/wine-blog/blogid/24/parentblogid/15.aspx";
// if the blogid is found in the url string
if (urlString.indexOf("blogid") != -1) {
alert("blogid id found");
// we strip the string to isolate the blogid
url = urlString.substring(urlString.indexOf("blogid") + 7);
//alert("url : " + url)
blogId = url.substring(0, urlString.indexOf("/"));
alert("blogId : " + blogId)
}
I need to be able to strip everything after the 24.
Thanks all.
Solution
var tempString = urlString.Split("blogid")[1];
var blogIdStr = tempString.Split("/")[1];
for the integer:
var blogId = parseInt(blogIdStr);
[edit:]
long form would be:
var tempArray = urlString.Split("blogid");
// try:
// alert(tempArray, tempArray.length);
var tempString = tempArray[1];
(...)
OTHER TIPS
You can try this:
var blogIdStr = urlString.replace(/(.*\/blogid\/\d+).*/, "$1")
This is one of those rare cases where a regexp is both simpler and easier to understand:
var matches = urlString.match(/\/blogid\/(\d+)\//);
if (matches) {
var id = matches[1];
}
or, if you're not worried about errors:
var id = urlString.match(/\/blogid\/(\d+)\//)[1];
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