JS内容为
var content="CoderZb,Welcome To ShanDong,Welcome to ZaoZhuang,CoderZB was asked";
// replace(A,B) 表示 B把A替换掉。记法很简单：长江后浪推前浪 。
// 用Move仅仅把第一个Welcome替换掉，第二个不受影响
var matchOne = content.replace('Welcome','Move');
// 用Move把所有的Welcome替换掉
var matchTwo =content.replace(/Welcome/g,'Move');
// 不分大小写替换所有的To或者to或者tO
var matchThree =content.replace(/To/gi,'to Big');
console.log("matchOne匹配后，数据为：",matchOne);
console.log("matchTwo匹配后，数据为：",matchTwo);
console.log("matchThree匹配后，数据为：",matchThree);
输出内容如下
matchOne匹配后，数据为： CoderZb,Move To ShanDong,Welcome to ZaoZhuang,CoderZB was asked
matchTwo匹配后，数据为： CoderZb,Move To ShanDong,Move to ZaoZhuang,CoderZB was asked
matchThree匹配后，数据为： CoderZb,Welcome to Big ShanDong,Welcome to Big ZaoZhuang,CoderZB was asked
输出内容截图如下
image.png
