Follow above link to listen to 18 minute audio podcast from "The Journal".
Trump ignore two things. First inflation started at teh end of his term in office. Second, inflation is a global phenomena, which means presidents, or vice presidents, don't really have much control in preventing it, and so his blaming Biden/Harris for inflation is not factually based.
Of the two, Harris has more detailed proposals, while Trump mostly recycles old slogans, like "drill baby drill" with no actual specifics or details about how he intends to accomplish his promises. This is significant as Trump has had much longer to put his plan together, while Harris only recently become her party's candidate.