Loop & search through ALL items in localStorage
arrays, for-loop, javascript, local-storage
Solution
Problem now SOLVED. The issue was that each time data was saved to localStorage, one extra empty item was stored at the bottom of the local db as a consequence of an incorrectly written for loop (in the setItem part.) arrayIndex < guestData.length should have been arrayIndex < guestData.length-1. arrayIndex < guestData.length-1 stores all items without creating an empty item at the bottom of the database which later messed up the search algorithm, as the last value to be search was undefined (the empty item).
Problem
I'm trying to loop through localStorage to get ALL items through `localStorage.length` that works with my search algorithm. If i change: `i < localStorage.length` inside the for loop to simply a number, i.e: `for (i=0; i<100; i++)` instead of: `(i=0; i<=localStorage.length-1; i++)`, everthing works. However, I do realize the problem might lie in the search algorithm. The code getting all items: ``` var name = new Array(); for (var i = 0; i <= localStorage.length - 1; i++) { // i < 100 works perfectly key = localStorage.key(i); val = localStorage.getItem(key); value = val.split(","); //splitting string inside array to get name name[i] = value[1]; // getting name from split string } ``` My working (!?) search algorithm: ``` if (str.length == 0) { document.getElementById("searchResult").innerHTML = ""; } else { if(str.length > 0) { var hint = ""; for(var i=0; i < name.length; i++) { if(str.toLowerCase() == (name[i].substr(0, str.length)).toLowerCase()) { //not sure about this line if(hint == "") { hint = name[i]; } else { hint = hint + " <br /> " + name[i]; } } } } } if(hint == "") { document.getElementById("searchResult").innerHTML=str + " står inte på listan"; } else { document.getElementById("searchResult").innerHTML = hint; } } ``` What is wrong with my `localStorage.length`, or what is wrong with the search algorithm?