正则表达式问题

[yaray]

// 字符串的中值 Linda 为变量
var content1 = "你好, <label style='background: blue; color: white'>Linda</label>";
var content2 = "你好, Linda";

求 content1 与 content2 互相转换正则表达式(为对应的字符串 着色/取消着色):
content2 --> content1
content1 --> content2

以下是本人写的(有错误,但不知道错在何处):
var key = "Linda";
var reg1 = eval("/^.*("+ key +").*$/");
var reg2 = /^<label style=\'background: blue; color: white\'>(.*)<\/label>$/;

content2.replace(reg1, "<label style='background: blue; color: white'>$1</label>");
content1.replace(reg2, "$1");

先感谢大家的回答!!

[meizz]

var reg1 = new RegExp("("+ key +")", "i");
var reg2 = /<\/?label[^<>]*>/gi;

[yaray]

还是梅老大厉害!!

love01px(JAVA ＣＵＰ) 的答案只能 content2 --> content1, 不能反过来.

[yaray]

以下是完成的正确答案:

var content1 = "你好, <label style='background: blue; color: white'>Linda</label>";
var content2 = "你好, Linda";
var key = "Linda";
var reg1 = new RegExp("("+ key +")", "i");
var reg2 = /<\/?label[^<>]*>/gi;

alert(content2.replace(reg1, "<label style='background: blue; color: white'>$1</label>"));
alert(content1.replace(reg2, ""));//空字符串

[indexroot]

<script>
var content1 = "你好, <label style='background: blue; color: white'>Linda</label>";
var content2 = "你好, Linda";
var key = "Linda";
var reg1 = eval("/("+ key +")/");
var reg2 = /<label [^>]*?>(.*)<\/label>/;

alert(content2.replace(reg1, "<label style='background: blue; color: white'>$1</label>"));
alert(content1.replace(reg2, "$1"));
</script>