javascript - How to filter elements from an array until specific string -

i'm trying filter out elements array until specific string, in case day names (mon, tue, wed etc.) variable:

var day = new date(reservation.startdate); 

i have array of elements , i'm using the push() method add them inside array.

here array:

console.log(json.stringify(arraydata, null, 4))  [     "<b>mon</b>",     "<b>aut14</b>",     "<b>kl25ab55200-3001</b>",     "<b>mon</b>",     "<b>aut15</b>",     "<b>kc23dk20010-3003</b>",     "<b>tue</b>",     "<b>ti14</b>",     "<b>kl04bt10110-3001</b>",     "<b>tue</b>",     "<b>aut15</b>",     "<b>kl25ab10451-3001</b>",     "<b>tue</b>",     "<b>aut13</b>",     "<b>aut13</b>",     "<b>kl25ad10000-14</b>",     "<b>tue</b>",     "<b>asr14</b>",     "<b>wed</b>",     "<b>ti14</b>",     "<b>ips16</b>",     "<b>a800bd65-3001</b>",     "<b>wed</b>",     "<b>ti14</b>",     "<b>kl04bt10110-3001</b>",     "<b>wed</b>",     "<b>aut15</b>",     "<b>kl25ab55200-3002</b>",     "<b>thu</b>",     "<b>aut16</b>",     "<b>kl25ab10250-3001</b>",     "<b>thu</b>",     "<b>ti14</b>",     "<b>ips16</b>",     "<b>a800bd65-3001</b>",     "<b>thu</b>",     "<b>ti13</b>",     "<b>ti14</b>",     "<b>kl25ab10300-3001</b>"         ] 

if want print out data only contains "mon", use:

if (day.tostring().indexof("mon") >= 0) {                                  document.getelementbyid("monday").innerhtml = arraydata.join(""); } 

but if use same method on wednesday example, data monday, tuesday , until wednesday, not ideal since want data wednesday.

if (day.tostring().indexof("wed") >= 0) {                                                                          document.getelementbyid("wednesday").innerhtml = arraydata.join(""); } 

so there effective way pick data middle of array , not include other days?

i have use core javascript, frameworks can't used.

to clarify

i need print data each day own innerhtml sections.

so need data ("monday").innerhtml :

"<b>mon</b>", "<b>aut14</b>", "<b>kl25ab55200-3001</b>", "<b>mon</b>", "<b>aut15</b>", "<b>kc23dk20010-3003</b>", 

("tuesday").innerhtml:

"<b>tue</b>", "<b>ti14</b>", "<b>kl04bt10110-3001</b>", "<b>tue</b>", "<b>aut15</b>", "<b>kl25ab10451-3001</b>", "<b>tue</b>", "<b>aut13</b>", "<b>aut13</b>", "<b>kl25ad10000-14</b>", "<b>tue</b>", "<b>asr14</b>", 

("wednesday").innerhtml:

"<b>wed</b>", "<b>ti14</b>", "<b>kl04bt10110-3001</b>", "<b>wed</b>", "<b>aut15</b>", "<b>kl25ab55200-3002</b>", 

("thursday").innerhtml:

"<b>thu</b>", "<b>aut16</b>", "<b>kl25ab10250-3001</b>", "<b>thu</b>", "<b>ti14</b>", "<b>ips16</b>", "<b>a800bd65-3001</b>", "<b>thu</b>", "<b>ti13</b>", "<b>ti14</b>", "<b>kl25ab10300-3001</b>" 

note data changes day day, should filter out other days , it's data array don't want include in innerhtml?

simply use array filter function , concatenate conditions if got need , pass "your day".

var array = [  '<b>mon</b>,<b>aut14</b>,<b>kl25ab55200-3001</b>',  '<b>mon</b>,<b>aut15</b>,<b>kc23dk20010-3003</b>',  '<b>tue</b>,<b>ti14</b>,<b>kl04bt10110-3001</b>',  '<b>tue</b>,<b>aut15</b>,<b>kl25ab10451-3001</b>',  '<b>tue</b>,<b>aut13</b>,<b>aut14</b>,<b>kl25ad10000-14',  '<b>wed</b>,<b>ti14</b>,<b>ips16</b>,<b>a800bd65-3001',  '<b>wed</b>,<b>tit14</b>,<b>kl04bt10110-3001</b>',  '<b>thu</b><br/>,<b>aut16</b>,<b>kl25ab10250-3001</b>',  '<b>thu</b><br/>,<b>ti14</b>,<b>kor16</b>,<b>a800bd65-3001</b>'  ];  function filtering(day, el) {    return el.includes('<b>'+day+'</b>');  }  // printing thu  console.log(array.filter(filtering.bind(null, 'thu')).join(''));  // printing wed  console.log(array.filter(filtering.bind(null, 'wed')).join(''));

edited

i understood data bad arranged , have lot of elements, not grouped row shown in console, here version in order rearrange data , perform operations:

var list = [  '<b>mon</b>','<b>aut14</b>','<b>kl25ab55200-3001</b>',  '<b>mon</b>','<b>aut15</b>','<b>kc23dk20010-3003</b>',  '<b>tue</b>','<b>ti14</b>','<b>kl04bt10110-3001</b>',  '<b>tue</b>','<b>aut15</b>','<b>kl25ab10451-3001</b>',  '<b>tue</b>','<b>aut13</b>','<b>aut14</b>','<b>kl25ad10000-14',  '<b>wed</b>','<b>ti14</b>','<b>ips16</b>','<b>a800bd65-3001',  '<b>wed</b>','<b>tit14</b>','<b>kl04bt10110-3001</b>',  '<b>thu</b><br/>','<b>aut16</b>','<b>kl25ab10250-3001</b>',  '<b>thu</b><br/>','<b>ti14</b>','<b>kor16</b>','<b>a800bd65-3001</b>'  ];  const keywords = ['mon', 'tue', 'wed', 'thu', 'fri'];  // starting data  // console.log(list);  //first reduce array better data format  var orderedlist = list.reduce(function(accumulator, currentvalue, currentindex, array) {    if (keywords.filter(el => currentvalue.indexof(el) > -1).length > 0) {       accumulator.push(currentvalue);    }    else {       accumulator[accumulator.length - 1] += currentvalue;    }    return accumulator;  }, []);  // here ordered data  // console.log(orderedlist);    function filtering(day, el) {    return el.includes('<b>'+day+'</b>');  }  // printing thu  console.log(orderedlist.filter(filtering.bind(null, 'thu')).join(''));  // printing wed  console.log(orderedlist.filter(filtering.bind(null, 'wed')).join(''));