Compare Two Arrary objects and check if any matched value

Hi,

 

I need to compare these two array with both col1 and col2 value if value matched then i need to show alert to the user as value matched if not alert should be as not matched. Note:Need to compare both the column(col1,col2) with second array(col1,col2).

 

array1:

0:{col1:"a",col2:"Chennai"}

1:{col1:"b",col2:"Chennai"}

2:{col1:"c",col2:"Chennai"}

3:col1:"a",col2:"Madurai"}

4:{col1:"a",col2:"Trichy"}

5:{col1:"b",col2:"Madurai"}

6:{col1:"C",col2:"Salem"}

array2: 0:{col1:"a",col2:"Chennai"}