When the error Uncaught TypeError: Cannot read property 'length' of undefined occurs ,it’s normally caused by your variable data doesn’t have a property named “d”.
You could use F12 developer tool to help you check your data or use console.log(data) to get more information.
Press F12 , click the “Sources” item and click your aspx page.
Click the number at left to decide which line you want to put your breakpoint.
Press F5 to reload the page , the code will stop where you put your breakpoint.
You could add another breakpoint. press F8 to skip to the next breakpoint , F10 to go to the next line.
Move your cursor to your data variable , it will show you detailed information .
Please check if data has a property named ‘d’.
Best regards ,
Ackerly Xu
MSDN Community Support
Please remember to click "Mark as Answer" the responses that resolved your issue.
If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.
Contributor
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Re: TableData
Jul 31, 2018 09:35 AM|Ackerly Xu|LINK
Hi JagjitSingh ,
When the error Uncaught TypeError: Cannot read property 'length' of undefined occurs ,it’s normally caused by your variable data doesn’t have a property named “d”.
You could use F12 developer tool to help you check your data or use console.log(data) to get more information.
Press F12 , click the “Sources” item and click your aspx page.
Click the number at left to decide which line you want to put your breakpoint.
Press F5 to reload the page , the code will stop where you put your breakpoint.
You could add another breakpoint. press F8 to skip to the next breakpoint , F10 to go to the next line.
Move your cursor to your data variable , it will show you detailed information .
Please check if data has a property named ‘d’.
Best regards ,
Ackerly Xu
Please remember to click "Mark as Answer" the responses that resolved your issue.
If you have any compliments or complaints to MSDN Support, feel free to contact MSDNFSF@microsoft.com.