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javascript learn script

array structure

topic, detailOrAns, grade

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localStorage only supports strings.
Use JSON.stringify() and JSON.parse().

localStorage.setItem(theRawList, JSON.stringify(theRawList));
storedNames = JSON.parse(localStorage.getItem("theRawList"));

localStorage.learnList = JSON.stringify(theRawList);
regainList = JSON.parse(localStorage.learnList);
regainList[0][0]
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backupList: future function
displayStatus:
count all g0, g1, ... g5
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showCard: increment showCount

selectCardButton:

showCardSelect: 
default: g0x1 +g1x0.9 +g2x0.8 +g3x0.7 +g4x0.6 +g5x0.5 +g6x0.4
	pendingList = random g0x1 + ... + random g5x1
	select 20
g0: select 20
g1: select 20
...
g6: select 20

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theRawList = [
  ["this is a test", "explanation", 3],
  ["this is another test", "no explanation", 2],
  ["no more test", "no explanation", 1]
];

setupFlag = localStorage.setupflag;
if (setupFlag !== "true"){
	localStorage.learnList = JSON.stringify(theRawList);
	localStorage.setupflag = "true";
}
regainList = JSON.parse(localStorage.learnList);
===

function storeList(regainList) {
	if(typeof(Storage) !== "undefined") {
		localStorage.learnList = JSON.stringify(theRawList);
	}
}

array in array
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var itemList = [
  [1, 2],
  [3, 4],
  [5, 6]
];
console.log(itemList[0][0]); // 1
console.log(itemList);

===
var itemList = new Array(10);
for (var i = 0; i < 10; i++) {
  itemList[i] = new Array(20);
}
itemList[5][12] = 3.0;

===
var itemList = [[]];

===
function matrix( rows, cols, defaultValue){
  var itemList = [];

  // Creates all lines:
  for(var i=0; i < rows; i++){
      itemList.push([]); // Creates an empty line
      itemList[i].push( new Array(cols)); // Adds cols to the empty line
      for(var j=0; j < cols; j++){
        itemList[i][j] = defaultValue; // Initializes
      }
  }
return itemList;
}

usage examples:

x = matrix( 2 , 3,''); // 2 lines, 3 cols filled with empty string
y = matrix( 10, 5, 0);// 10 lines, 5 cols filled with 0


array of objects
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var array = [];
array.push({ name: 'abc', value: 'def' });
array.push({ name: 'ghi', value: 'jkl' });

for (var i = 0; i < array.length; i++) {
  // use array[i] here
}



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$.get("textFile.txt", function(data) { var items = data.split(','); });
================


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var srcFrame;
function loadOuter(doc) {
 srcFrame = document.getElementById("hiddenContent");
 srcFrame.src = doc;

 // workaround for missing onLoad event in IFRAME for NN6
 if (!srcFrame.onload) {
  setTimeout("transferHTML()", 1000)
 }
}

function transferHTML(){
 srcContent='';
 if (srcFrame.contentDocument){
  srcContent=srcFrame.contentDocument.getElementsByTagName("BODY")[0].innerHTML;
 }
 else if (srcFrame.contentWindow){
  srcContent=srcFrame.contentWindow.document.body.innerHTML;
 }
 document.getElementById("outerDisplay").innerHTML = srcContent
}
</script>

<INPUT TYPE="button" VALUE="input.txt" onClick="loadOuter('input.txt')" >
<div id="outerDisplay"></div>
<iframe  id="hiddenContent" width="200" height="200" style="position:absolute;visibility:hidden;" ></iframe>

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https://social.msdn.microsoft.com/Forums/en-US/64ea2d16-7594-400b-8b25-8b3b9a078eab/read-external-text-file-with-javascript?forum=sidebargadfetdevelopment
This code should help you read from a remote text file:

Code Snippet
var txtFile = new XMLHttpRequest();
txtFile.open("GET", "http://my.remote.url/myremotefile.txt", true);
txtFile.onreadystatechange = function() {
  if (txtFile.readyState === 4) {  // Makes sure the document is ready to parse.
    if (txtFile.status === 200) {  // Makes sure it's found the file.
      allText = txtFile.responseText; 
      lines = txtFile.responseText.split("\n"); // Will separate each line into an array
    }
  }
}
txtFile.send(null);
 
you can use a local file, just use the file:// protocol (ie file://C:/Users/Andy/Documents/textfile.txt).

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