JavaScript 4行3列二维数组

html-js-css

JavaScript怎么输出4行3列的二维数组

JavaScript中可利用双层for循环和write()来输出4行3列的二维数组，语法“for(var i=0;i<=4;i++){for(var j=0;j<=3;j++){document.write(a[i][j]+&q

code
2022-4-22
47 0 0 0

Error[2]: array_keys() expects parameter 1 to be array, null given, File: /www/wwwroot/outofmemory.cn/tmp/view_template_wqo_wpcom_htm_tag.htm, Line: 137

File: /www/wwwroot/outofmemory.cn/tmp/view_template_wqo_wpcom_htm_tag.htm, Line: 137, array_keys()
File: /www/wwwroot/outofmemory.cn/tmp/route_tag.php, Line: 115, include(/www/wwwroot/outofmemory.cn/tmp/view_template_wqo_wpcom_htm_tag.htm)
File: /www/wwwroot/outofmemory.cn/tmp/index.inc.php, Line: 174, include(/www/wwwroot/outofmemory.cn/tmp/route_tag.php)
File: /www/wwwroot/outofmemory.cn/index.php, Line: 30, include(/www/wwwroot/outofmemory.cn/tmp/index.inc.php)

JavaScript怎么输出4行3列的二维数组