commit b63e899507d118ba899a59f8b15b29ea654b3e97
author Yi Shen <bm2736892@gmail.com> Thu Jul 22 13:46:55 2021 +0800
committer GitHub <noreply@github.com> Thu Jul 22 13:46:55 2021 +0800
tree 0a3277f3ec55f929448908c00e3127029468df9e
parent a98b77ff8c596470528ea212e9e29f8f0a211536

tooltip: fix probably null access (#15399)

src/component/tooltip/TooltipView.ts

diff --git a/src/component/tooltip/TooltipView.ts b/src/component/tooltip/TooltipView.ts
index e18a656..c2688f6 100644
--- a/src/component/tooltip/TooltipView.ts
+++ b/src/component/tooltip/TooltipView.ts
@@ -969,8 +969,10 @@
 
                 // check is cbParams data value changed
                 lastCbParamsList && zrUtil.each(lastItem.seriesDataIndices, (idxItem) => {
-                    const cbParams = cbParamsList[idxItem.seriesIndex];
-                    if (cbParams && lastCbParamsList[idxItem.seriesIndex].data !== cbParams.data) {
+                    const seriesIdx = idxItem.seriesIndex;
+                    const cbParams = cbParamsList[seriesIdx];
+                    const lastCbParams = lastCbParamsList[seriesIdx];
+                    if (cbParams && lastCbParams && lastCbParams.data !== cbParams.data) {
                         contentNotChanged = false;
                     }
                 });