How to use regex match in string array?

Question

I want to this : When the entered value matches the value of the my array , write the matches value.

so this is my code :

//my array as the following :

var checkNames = (document.getElementById("KPIorCounterList").value.split("\n").map(element => element.trim())).filter(v=>v != "");

my another array : myarray= ["RAB Video call drop %",RAB PS R99 drop % ","RAB PS HSDPA drop %"]

For example ; when write RAB* to textare, I should to see, starting with "RAB"

I guess, My code should be as follows:

 for (var i = 0; i < checkNames.length; i++) {
 for (var j = 0; j < myarray.length; j++) {
 // var str = myarray[j].split(" "); // I am not sure for his.
 I want to this for here : (pseudo code)
 for example checkName[i] == RAB*
 if (checkName[i].match("match condition") == myarray[j])
 alert(myarray[j]);
 //I should show output myarray[j] == RAB Video call drop %",RAB PS R99 drop % ","RAB PS HSDPA drop %"
 }
 }

How can I do ? Please..

• Arg0n: Don't really have an answer for you, but i think myarray["j"] should be myarray[j]..
• Vladu Ionut: checkNames is temp array?
• eagle: No, different array @VladuIonut
• Vladu Ionut: your pseudo code is not so clear , which is temp array in there
• eagle: sorry, I edited my code. @VladuIonut

Answer 1

function check(){
var checkNames = (document.getElementById("KPIorCounterList").value.split("\n").map(element => element.trim())).filter(v=>v != "");
var myarray = ["RAB Video call drop %", "RAB PS R99 drop % ", "RAB PS HSDPA drop %"]
for (var i = 0; i < checkNames.length; i++) {
 console.log("results for", checkNames[i])
 for (var j = 0; j < myarray.length; j++) {
 var matchString = myarray[j].match(new RegExp(checkNames[i].replace('*','.*')));
 if (matchString && myarray.indexOf(matchString[0])!==-1) {
 console.log(myarray[j]);
 }
 //I should show output myarray[j] == RAB Video call drop %",RAB PS R99 drop % ","RAB PS HSDPA drop %"
 }
}
 }

<textarea id="KPIorCounterList"></textarea>
<button onclick="check()">Check</button>

• eagle: checkName came from 'textarea.value '. I want to this : textarea.value is array and if array eleman is : ''RAB*'' the above code should work. How can I control it ? please @VladuIonut

Answer 2

@eagle, I believe this is the input to checkNames. If so, here is my solution -

var checkNames = ['RAB*'];
var myarray = ["RAB Video call drop %","RAB PS R99 drop % ","RAB PS HSDPA drop %"];
for (var i = 0; i < checkNames.length; i++) {
 for (var j = 0; j < myarray.length; j++) {
 var formatRegExpr = checkNames[i].replace('*','.*');
 var re = new RegExp(formatRegExpr, 'g');
 alert(myarray[j].match(re));
 }
}

Accept this answer if it solves your requirement.

• eagle: I'm trying to learn so var re = new RegExp(formatRegExpr, 'g'); What 'g' is? @dinesh
• dinesh: g - global search flag. Good place to learn - regexr-dot-com
• eagle: checkName came from 'textarea.value '. I want to this : textarea.value is array and if array eleman is : ''RAB*'' the above code should work. How can I control it ? please @dinesh