正則表達式筆記

1.從span裏面拿取一個屬性

    var b='全額翁羣二羣翁羣<span style="color: rgb(255, 0, 0);" id="1550629749912" primary="true" synonym="點贊活動" similar="" synonym_id="3043" similar_id="" word_extract="">翁錯</span><span style="color: rgb(255, 0, 0);" id="1550629749912" primary="true" synonym="點贊活動" similar="" synonym_id="3043" similar_id="" word_extract="">翁錯</span>'

取出word_extract裏面的值的正則表達式

              var r = /word_extract="([^"]*)"/g
          var result;
                        
         while ((result = r.exec(b)) != null)     
                {

            if(result[1]){
                                
                    }
        }