如何在网格中删除类名称为“ grid-item”的div?如何遍历它们并删除它们?我想使用reset()函数删除类名称为“ grid-item”的每个元素。
const container = document.getElementById("container");
let canvasSize = Number(prompt("Enter amount of squares per side to make the new grid"));
let resetButton = document.createElement("button");
resetButton.innerHTML = "Reset Grid";
document.body.appendChild(resetButton);
function makeRows(_canvasSize) {
const rows = canvasSize
const cols = canvasSize
container.style.setProperty('--grid-rows', rows);
container.style.setProperty('--grid-cols', cols);
for (c = 0; c < (rows * cols); c++) {
let cell = document.createElement("div");
container.appendChild(cell).className = "grid-item";
cell.addEventListener('mouseover',
e => e.target.style.backgroundColor = "black"
)
};
};
resetButton.addEventListener('click', (e) => {
reset();
});
var list= document.getElementsByClassName("events");
function reset() {
container.classList.remove("grid-item");
makeRows(canvasSize)
}
makeRows(canvasSize);
您可以使用querySelectorAll()
查找具有“ grid-item”类的所有元素,然后为每个元素找到其父节点,请使用querySelectorAll()
删除该元素,例如:
removeChild()
removeChild()
function reset() {
document
.querySelectorAll(".grid-item")
.forEach((e) => e.parentNode.removeChild(e));
}
const container = document.getElementById("container");
let canvasSize = Number(
prompt("Enter amount of squares per side to make the new grid")
);
let resetButton = document.createElement("button");
resetButton.innerHTML = "Reset Grid";
document.body.appendChild(resetButton);
function makeRows(_canvasSize) {
const rows = canvasSize;
const cols = canvasSize;
container.style.setProperty("--grid-rows", rows);
container.style.setProperty("--grid-cols", cols);
for (let c = 0; c < rows * cols; c++) {
let cell = document.createElement("div");
container.appendChild(cell).className = "grid-item";
cell.addEventListener(
"mouseover",
(e) => (e.target.style.backgroundColor = "black")
);
}
}
resetButton.addEventListener("click", (e) => {
reset();
});
var list = document.getElementsByClassName("events");
function reset() {
document
.querySelectorAll(".grid-item")
.forEach((e) => e.parentNode.removeChild(e));
}
makeRows(canvasSize);