How can you easily generate sequential class names in a for loop?
How can you easily generate sequential class names in a for loop?
To add the iteration plus 1 from your for loops in the class being added, you can use this example:
for(var i = 0; i < frets; i++){
var fretRow = document.createElement("ul");
fretRow.classList.add("fret-row-" + (i + 1));
// Create li items for each string and add them to the fretRow
for(var j = 0; j < strings; j++){
var fret = document.createElement("li");
fret.classList.add("string-" + (j + 1));
fretRow.appendChild(fret);
}
// Add the entire fretRow to the fretboard div
fretboard.appendChild(fretRow);
}Follow the instructions to create a fretboard using JavaScript:
for(var x = 0; x < totalFrets; x++){
var fretRowElement = document.createElement("ul");
fretRowElement.classList.add("fret-row" + (x+1));
for(var y = 0; y < totalStrings; y++){
var stringElement = document.createElement("li");
stringElement.classList.add("string" + (y+1));
fretRowElement.appendChild(stringElement);
}
guitarFretboard.appendChild(fretRowElement);
}
To achieve this, modify your for loop as follows: Replace
fretRow.classList.add("fret-row")fretRow.classList.add("fret-row", "fret-row"+(i+1));fret.classList.add("string") with fret.classList.add("string"+(j+1))for(var i = 0; i < frets; i++){
var fretRow = document.createElement("ul");
fretRow.classList.add("fret-row", "fret-row"+(i+1));
for(var j = 0; j < strings; j++){
var fret = document.createElement("li");
fret.classList.add("string"+(j+1));
fretRow.appendChild(fret);
}
fretboard.appendChild(fretRow);
}
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