js字符串替换

   var text='Hello world, Hello world';
   var b= text.replace('world','zhengxiaoya');  // 找到字符串中的第一个'world',并把它替换为'zhengxiaoya'
   var c=text.replace(/world/g,'zhengxiaoya');   // 用正则表达式去匹配所有的'world',替换为'zhengxiaoya'
    var d=text.replace(/hello/gi,'Hi')           // 忽略大小写替换所有匹配
   console.log("---today---",b);                // ---today--- Hello zhengxiaoya, Hello world
   console.log("---today c---",c);              // Hello zhengxiaoya, Hello zhengxiaoya
   console.log("---d----",d);                  //---d---- Hi world, Hi world

 

转载于:https://www.cnblogs.com/javazxy/p/8073762.html