--- id: 5d5ab57f07f328a948d398d6 title: Part 10 challengeType: 0 dashedName: part-10 --- # --description-- In order to update HTML elements on the page, you need to get references to them in your JavaScript code. The code `let el = document.querySelector("#el");` gets a reference to an HTML element with an `id` of `el` and assigns it to the variable `el`. Get a reference to the HTML element with the `id` of `button1` and assign it to a variable with the name `button1`. # --hints-- See description above for instructions. ```js assert( /let\s+button1\s*\=\s*document.querySelector\(\s*[\'\"\`]\s*\#button1\s*[\'\"\`]\s*\);?/.test( code ) ); ``` # --seed-- ## --before-user-code-- ```html