Merge pull request #72 from crupest/merge-frontend

Merge frontend repo into this repo.

1 files changed, 35 insertions, 0 deletions

diff --git a/Timeline/ClientApp/src/helper.ts b/Timeline/ClientApp/src/helper.ts
new file mode 100644
index 00000000..904dcbbe
--- /dev/null
+++ b/Timeline/ClientApp/src/helper.ts
@@ -0,0 +1,35 @@
+//copied from https://stackoverflow.com/questions/5999118/how-can-i-add-or-update-a-query-string-parameter

+export function updateQueryString(

+  key: string,

+  value?: string | null,

+  url?: string

+): string {

+  if (!url) url = window.location.href;

+  const re = new RegExp('([?&])' + key + '=.*?(&|#|$)(.*)', 'gi');

+  let hash;

+

+  if (re.test(url)) {

+    if (typeof value !== 'undefined' && value !== null) {

+      return url.replace(re, '$1' + key + '=' + value + '$2$3');

+    } else {

+      hash = url.split('#');

+      url = hash[0].replace(re, '$1$3').replace(/(&|\?)$/, '');

+      if (typeof hash[1] !== 'undefined' && hash[1] !== null) {

+        url += '#' + hash[1];

+      }

+      return url;

+    }

+  } else {

+    if (typeof value !== 'undefined' && value !== null) {

+      const separator = url.includes('?') ? '&' : '?';

+      hash = url.split('#');

+      url = hash[0] + separator + key + '=' + value;

+      if (typeof hash[1] !== 'undefined' && hash[1] !== null) {

+        url += '#' + hash[1];

+      }

+      return url;

+    } else {

+      return url;

+    }

+  }

+}