data_number_hider-joesimmons

// USER SETTINGS //////////////////////////////////////

var data = [

    "aaa",
    "bbb",
    "ccc",
    "ddd",

""];

var numbers = [

    "1-10",
    "15-20",

""];

// NO EDITING BELOW ///////////////////////////////////



data.pop(data.length); // remove dud
numbers.pop(numbers.length); // remove dud
var items = document.evaluate("//div[@data and @number]", document, null, 6, null),
    rData, rNumbers, isNum = /\d+/, i, j, k, n, tmp, item, min = [], max = [];

// set up regex for data
rData = new RegExp(data.join("|"));

// set up array for the numbers
for(i = 0; i < numbers.length; i++) {
    min.push(parseInt(numbers[i].split("-")[0], 10));
    max.push(parseInt(numbers[i].split("-")[1], 10));
}

// iterate through the elements
for(j = 0; j < items.snapshotLength; j++) {
    item = items.snapshotItem(j);
    tmp = item.getAttribute("number");
    if(rData.test(item.getAttribute("data")) && isNum.test(tmp)) {
        n = parseInt(tmp.match(isNum)[0], 10);
        for(k = 0; k < min.length; k++) {
            if(n >= min[k] && n <= max[k]) {
                item.style.display = "none";
            }
        }
    }
}