1. A computer program product for tracking changes in a JAVASCRIPT object notation structure, the computer program product comprising: one or more computer readable storage media and program instructions stored on the one or more computer readable storage media, the program instructions comprising: program instructions to adjust a JAVASCRIPT object notation structure to comprise a tag on at least one object and a tag on at least one array, wherein adjusting a JAVASCRIPT object notation structure comprises creating, by one or more computer processors, a tag on each object and array in the JAVASCRIPT object notation structure for tracking changes to the JAVASCRIPT object notation structure; program instructions to receive data indicating a first set of at least one change to the JAVASCRIPT object notation structure, wherein receiving data indicating a first set of at least one change to the JAVASCRIPT object notation structure comprises: program instructions to receive at least one change to more than one objects; and program instructions to receive at least one change to more than one arrays; program instructions to adjust the tags in the JAVASCRIPT object notation structure to include the first set of the at least one change in the JAVASCRIPT object notation structure; program instructions to receive data indicating the first set of the at least one change to the JAVASCRIPT object notation structure is complete; program instructions to display the first set of the at least one change to the JAVASCRIPT object notation structure based upon the adjusted tags; program instructions to change the JAVASCRIPT object notation structure based upon the first set of the at least one completed changes to the JAVASCRIPT object notation structure; program instructions to receive a second set of at least one change to the JAVASCRIPT object notation structure, wherein the second set and the first set include a change to a common component in the code; program instructions to adjust the tags to replace the first set of the at least one change to the JAVASCRIPT object notation structure with the received second set of at least one change to the JAVASCRIPT object notation structure that overlap with the first set of the at least one change to the JAVASCRIPT object notation structure; program instructions to receive a third set of at least one change to the JAVASCRIPT object notation structure, wherein the third set, the first set, and the second set include a change to a common component in the code; program instructions to adjust the tags to the JAVASCRIPT object notation structure to replace the first set of at least one change and the second set of at least one change that overlap with the third set of at least one change; and program instructions to change the JAVASCRIPT object notation structure based upon the adjusted tags to the JAVASCRIPT object notation structure to replace the first set of at least one change and the second set of at least one change that overlap with the third set of at least one change.