1 <!DOCTYPE html> 2 <html> 3 4 <head> 5 <meta charset="UTF-8"> 6 <title>变量命名</title> 7 </head> 8 9 <body> 10 <script> 11 /*var _$1=1; 12 var 我爱你="I love you!"; 13 var top=1; 14 alert(top); 15 alert(我爱你); 16 alert(name); 17 alert(break); 18 var name = "张三"; 19 console.log(name); 20 name = 18; 21 console.log(name);*/ 22 var aaa = 1; 23 24 var bbb; 25 bbb = 1; 26 27 var bool; 28 bool = true; 29 30 var a, b, c; 31 var a; 32 b; 33 c; 34 </script> 35 </body> 36 37 </html>
原文：https://www.cnblogs.com/BingBing-Deng/p/10237869.html