Fix: If a footer is found to be null or undefined, Excel export could throw an error

AllanJard · AllanJard · commit 8830dfe369b6 · 2024-02-27T10:50:17.000Z
https://datatables.net/forums/discussion/78306
diff --git a/js/buttons.html5.js b/js/buttons.html5.js
@@ -516,7 +516,7 @@ function _excelColWidth(data, col) {
 	var max = data.header[col].length;
 	var len, lineSplit, str;
 
-	if (data.footer && data.footer[col].length > max) {
+	if (data.footer && data.footer[col] && data.footer[col].length > max) {
 		max = data.footer[col].length;
 	}
 

Original file line number	Diff line number	Diff line change
`@@ -516,7 +516,7 @@ function _excelColWidth(data, col) {`
`516`	`516`	`var max = data.header[col].length;`
`517`	`517`	`var len, lineSplit, str;`
`518`	`518`
`519`		`- if (data.footer && data.footer[col].length > max) {`
	`519`	`+ if (data.footer && data.footer[col] && data.footer[col].length > max) {`
`520`	`520`	`max = data.footer[col].length;`
`521`	`521`	`}`
`522`	`522`