[FIX] web, web_editor: improve browser support for JS lazy loading

opw-2125858

closes odoo/odoo#41362

Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>

addons/web/static/src/js/public/lazyloader.js

@@ -21,11 +21,13 @@ function waitLazy() {
     }
     waitingLazy = true;
 
-    document.querySelectorAll('.o_wait_lazy_js').forEach(function (element) {
+    var lazyEls = document.querySelectorAll('.o_wait_lazy_js');
+    for (var i = 0; i < lazyEls.length; i++) {
+        var element = lazyEls[i];
         blockEvents.forEach(function (evType) {
             element.addEventListener(evType, blockFunction);
         });
-    });
+    }
 }
 /**
  * Unblocks the DOM sections blocked by @see waitLazy and removes the related
@@ -37,12 +39,14 @@ function stopWaitingLazy() {
     }
     waitingLazy = false;
 
-    document.querySelectorAll('.o_wait_lazy_js').forEach(function (element) {
+    var lazyEls = document.querySelectorAll('.o_wait_lazy_js');
+    for (var i = 0; i < lazyEls.length; i++) {
+        var element = lazyEls[i];
         blockEvents.forEach(function (evType) {
             element.removeEventListener(evType, blockFunction);
         });
         element.classList.remove('o_wait_lazy_js');
-    });
+    }
 }
 
 // Start waiting for lazy loading as soon as the DOM is available

addons/web_editor/static/src/js/frontend/loader_loading.js

@@ -10,7 +10,10 @@
  */
 
 document.addEventListener('DOMContentLoaded', () => {
-    document.querySelectorAll('textarea.o_wysiwyg_loader').forEach(textarea => {
+    // Standard loop for better browser support
+    var textareaEls = document.querySelectorAll('textarea.o_wysiwyg_loader');
+    for (var i = 0; i < textareaEls.length; i++) {
+        var textarea = textareaEls[i];
         var wrapper = document.createElement('div');
         wrapper.classList.add('position-relative', 'o_wysiwyg_wrapper');
 
@@ -24,7 +27,7 @@ document.addEventListener('DOMContentLoaded', () => {
 
         textarea.parentNode.insertBefore(wrapper, textarea);
         wrapper.insertBefore(textarea, loadingElement);
-    });
+    }
 });
 
 })();