我正在尝试编写一个脚本来帮助在与正则表达式匹配时突出显示。以下是我现在所做的示例。
var text = "SOMETHING ~WEIRDs~ AND Not WEIRD";
var regexp = /\b(WEIRD)\b/
var matches = text.match(regexp);
for (i = 0; i < matches.length; i++) {
var replace_all = RegExp(matches[i] + "(?![^<]*>|[^<>]*<\/)", "ig");
text = text.replace(eval(replace_all), "<span style='background- color:yellow'>" + matches[i] + "</span>");
}
console.log(text);Run Code Online (Sandbox Code Playgroud)
上面代码的输出是
SOMETHING ~<span style='background- color:yellow'>WEIRD</span>s~ AND Not <span style='background- color:yellow'>WEIRD</span>
Run Code Online (Sandbox Code Playgroud)
我想要的输出是
SOMETHING ~WEIRDs~ AND Not <span style='background- color:yellow'>WEIRD</span>
Run Code Online (Sandbox Code Playgroud)
我想知道的是,无论如何写一个正则表达式包含正则表达式和提供的单词?或者有任何其他方法可以解决这个不正确的替换问题。
我目前正在开发一个需要使用 Cupertino 小部件构建的项目。一切都很好,直到我尝试不在下一页显示底部导航栏,但底部导航栏仍然从上一页向前推进。下面是我的示例代码。
class PageOne extends StatelessWidget {
@override
Widget build(BuildContext context) {
return CupertinoTabScaffold(
tabBar: CupertinoTabBar(
items: [
BottomNavigationBarItem(
icon: Icon(CupertinoIcons.person), label: 'Person'),
BottomNavigationBarItem(
icon: Icon(CupertinoIcons.mail), label: 'Mail'),
BottomNavigationBarItem(
icon: Icon(CupertinoIcons.flag), label: 'Flag'),
],
),
tabBuilder: (context, index) {
return CupertinoTabView(
routes: {
'p2': (context) => PageTwo(),
},
builder: (context) {
return CupertinoPageScaffold(
backgroundColor: Colors.white,
child: Center(
child: Column(
children: [
ElevatedButton(
onPressed: () {
Navigator.pushNamed(context, 'p2');
},
child: Text('Next Page'),
),
],
),
));
},
);
},
); …Run Code Online (Sandbox Code Playgroud) 我知道很多帖子都提到 xampp 中的 mariadb 已经包含联合引擎,但不幸的是,联合引擎尚未安装在我的 mariadb 中,如下表所示。
MariaDB [information_schema]> show engines;
+--------------------+---------+--------------------------------------------------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+--------------------+---------+--------------------------------------------------------------------------------------------------+--------------+------+------------+
| CSV | YES | CSV storage engine | NO | NO | NO |
| InnoDB | DEFAULT | Percona-XtraDB, Supports transactions, row-level locking, foreign keys and encryption for tables | YES | YES | YES |
| MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO …Run Code Online (Sandbox Code Playgroud)