Javascript Ajax call gets data from a table through PHP. It returns data as a Javascript array.

• When i do the console.log(this.responseText) I get the following

[['ID','StudentName','Age'],['1','Student1','25'], ['2','Student2','24'], ['3','Student3','22'], ] 

• When i type at console this.responsetext, i get the following

"[['ID','StudentName','Age'],['1','Student1','25'], ['2','Student2','24'], ['3','Student3','22'], ]"  ( quotes added )

• When i save this to a variable as following ,

myarray=this.responsetext

...it gets saved as string.

• When I save this to the variable as following (without quotes)

myarray=[['ID','StudentName','Age'],['1','Student1','25'], ['2','Student2','24'], ['3','Student3','22'], ] 

...it is properly saved as an array.

I tried to remove the quotes(") by replace method, but it doesnt have any effect.

How to get a Javascript array from PHP and save it in javascript array, in javascript?