Fix LiteAdaptor's elementsByClass() function, and getElements(). Reso…

…lves issue mathjax/MathJax#2278.
mathjax · Dec 31, 2019 · 0109be6 · 0109be6
1 parent d49f63b
commit 0109be6
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/ts/adaptors/liteAdaptor.ts b/ts/adaptors/liteAdaptor.ts
@@ -193,9 +193,9 @@ export class LiteAdaptor extends AbstractDOMAdaptor<LiteElement, LiteText, LiteD
         while (n) {
             if (n.kind !== '#text' && n.kind !== '#comment') {
                 n = n as LiteElement;
-                const classes = (n.attributes['class'] || '').split(/ /);
-                if (classes.find(name)) {
-                    let tags = [] as LiteElement[];
+                const classes = (n.attributes['class'] || '').trim().split(/ +/);
+                if (classes.includes(name)) {
+                    tags.push(n);
                 }
                 if (n.children.length) {
                     stack = n.children.concat(stack);
@@ -211,7 +211,7 @@ export class LiteAdaptor extends AbstractDOMAdaptor<LiteElement, LiteText, LiteD
      */
     public getElements(nodes: (string | LiteElement | LiteElement[])[], document: LiteDocument) {
         let containers = [] as LiteElement[];
-        const body = this.body(this.document);
+        const body = this.body(document);
         for (const node of nodes) {
             if (typeof(node) === 'string') {
                 if (node.charAt(0) === '#') {