Get parts of string between certain characters

string_parts.js

var s = "@cartman ,[[kyle]] do not    know:[[homer simpson]]";
var collect = false;
var t;

for( let i = 0; i < s.length; i++ ){
    if( s[i] == '[' && s[i] == s[i+1]){
		collect = true;
        i = i + 1;
        continue;
    }

    if( s[i] == ']' && s[i] == s[i+1]){
        collect = false;
        console.log(  t ); 
        t = "";
    }

    else if (collect)
	  t += s[i];
}

Parts including matched characters:

for( let i = 0; i < s.length; i++ ){
    if( s[i] == '[' && s[i] == s[i+1])
		collect = true;
  
	if (collect)
	  t += s[i];

    if( s[i] == ']' && s[i] == s[i-1]){
        collect = false;
        console.log(  t ); 
        t = "";
    }
}