# Main Thread Script Evaluation

This report lists URLs and the corresponding time taken for evaluating scripts on the main thread. The main thread script evaluation time measures the duration spent by the browser to execute JavaScript code during page load.

**Priority**: None

**Impact**: Neutral

## How to fetch the data for this report template

You will need to run a crawl for report template to generate report. When report has been generated and you have
crawl id you can fetch data for the report using the following query:


```graphql
query GetReportStatForCrawl(
      $crawlId: ObjectID!
      $reportTemplateCode: String!
      $after: String
     ) {
        getReportStat(
          input: {crawlId: $crawlId, reportTemplateCode: $reportTemplateCode}
        ) {
          crawlSiteSpeedAuditItems(after: $after, reportType: Basic) {
            nodes {
              opportunityDigest
              element
              url
              wastedSecs
              pageviews
              productOfWastedSecsAndPageviews
              auditResult
            }
            totalCount
            pageInfo {
              endCursor
              hasNextPage
            }
          }
       }
     }
```

**Variables:**
```json
{"crawlId":"TjAwNUNyYXdsNDAwMA","reportTemplateCode":"mainthread_script_evaluation_items"}
```