javascript搜索和替换?

return theString.replace(/\ba[a-z]*n\b/ig, '')

在JavaScript中:

var substitute = "\"";
var text = "action";
var text = text.replace(/\b(a)([a-z]+?)(n)\b/gim,"$1" + substitute + "$3");
// result = a"n ... if what  you really want is a double quote here

我真的不确定你想做什么,但我猜从“行动”到“CTIO”?

var foo = 'action';
if (foo.substr(0,1)=='a' && foo.substr(-1,1)=='n') {
  var bar = foo.substr(1,foo.length-2);
  alert(bar); // ctio
}

尝试以下操作

str.replace(/\ba(\w+)n\b/igm,'');

对于注释中的问题,请使用以下注释

var sub = "hello";
str.replace(/(<)(\w+)(")/igm,"$1" + sub + "$3");