99 - HackMD

# 99 ###### tags: `JavaScript` ``` <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>99乘法表</title> <style> .tb1{ width: 600px; border: 3px solid green; border-collapse: collapse; } td{ border:1px solid red; color: blue; background-color: yellow; } th{ border:1px solid red; text-align: center; background-color: orange; } </style> </head> <body> <table class="tb1" > <caption><h4>九九乘法表</h4></caption> <thread> <script> document.write("<tr>") for(var i=1;i<10;i++){ document.write(`<th>${i}</th>`) } document.write("</tr>") </script> </thread> <tbody> <script> document.write("<tr>") for(var i=1;i<10;i++){ document.write("<td>") for(var j=1;j<10;j++){ document.write(`${j}*${i}=${j*i}<br>`) } document.write("</td>") } document.write("</tr>") </script> </tbody> </table> </body> </html> ``` 換寫法 ``` <script > document.write("<tr>") for(let i=1 ; i<=9 ; i++){ for(let j=1 ; j<=9 ; j++){ document.write(`<td>${j}*${i}=${i*j}</td>`) } document.write("</tr>") } </script> ```