javacript replace 正则取字符串中的值并替换【推荐

function doSubmit(){
  var content = UE.getEditor('messageTemplate').getContent(); 
  content = content.replace(/rgba?\(\s?\d+\s?,\s?\d+\s?,\s?\d+\s?\)/g,function(){
    return fixColor('color',arguments[0]);
  })
  .......
}
 //rgb颜色 转16进制
function fixColor(name,value){
  if (/color/i.test(name) && /rgba?/.test(value)) {
    console.log(value);
    var array = value.split(",");
    if (array.length > 3){
      return "";
    }
    value = "#";
    for (var i = 0, color; color = array[i++];) {
      color = parseInt(color.replace(/[^\d]/gi, ''), 10).toString(16);
      value += color.length == 1 ? "0" + color : color;
    }
    value = value.toUpperCase();
  }
  return value;
}

function test(){
  var str = "<color color_tag=\"#112233\">";//目标替换成 <color=#112233>
  str = str.replace(/ color_tag=\"(#.{6})\"/g,function(){
    return "="+arguments[1];
  })
  console.log(str);
}