<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <script src="./js/jquery.min.js"></script> <style> div { width: 100px; height: 100px; background-color: pink; } </style> </head> <body> <div>1</div> <div>2</div> <div>3</div> <script> $(function() { var arr = ["red", "green", "pink"]; var sum = 0; $("div").each(function(index, domEle) { //第一个索引号 console.log(index); console.log(domEle); $(domEle).css("color", arr[index]); sum += parseInt($(domEle).text()); }) console.log(sum); }) </script> </body> </html>
