Ported EditChannelModal to React-Bootstrap

web/react/utils/utils.jsx

@@ -749,19 +749,10 @@ export function updateCodeTheme(theme) {
 
 export function placeCaretAtEnd(el) {
     el.focus();
-    if (typeof window.getSelection != 'undefined' && typeof document.createRange != 'undefined') {
-        var range = document.createRange();
-        range.selectNodeContents(el);
-        range.collapse(false);
-        var sel = window.getSelection();
-        sel.removeAllRanges();
-        sel.addRange(range);
-    } else if (typeof document.body.createTextRange != 'undefined') {
-        var textRange = document.body.createTextRange();
-        textRange.moveToElementText(el);
-        textRange.collapse(false);
-        textRange.select();
-    }
+    el.selectionStart = el.value.length;
+    el.selectionEnd = el.value.length;
+
+    return;
 }
 
 export function getCaretPosition(el) {