Problem Description:
The browser reported an error of ‘stylesheets undefined’
this.sheetData.styleSheets = "";Cause analysis:
In some scenarios, stylesheets do not exist, causing the browser to report an error and are not defined
Solution:
Add a judgment. If stylesheets does not exist, this attribute will be automatically added and null value will be assigned.
if (this.sheetData) {
this.sheetData['styleSheets'] = "";
}Read More:
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