81 lines
2.0 KiB
JavaScript
81 lines
2.0 KiB
JavaScript
var container = document.getElementById("container");
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var slider = document.getElementById("slider");
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var slides = document.getElementsByClassName("slide").length;
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var buttons = document.getElementsByClassName("btn");
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var currentPosition = 0;
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var currentMargin = 0;
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var slidesPerPage = 3;
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var slidesCount = slides - slidesPerPage;
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var containerWidth = container.offsetWidth;
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var prevKeyActive = false;
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var nextKeyActive = true;
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window.addEventListener("resize", checkWidth);
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function checkWidth() {
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containerWidth = container.offsetWidth;
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setParams(containerWidth);
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}
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function setParams(w) {
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if (w < 551) {
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slidesPerPage = 1;
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} else {
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if (w < 901) {
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slidesPerPage = 2;
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} else {
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if (w < 1101) {
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slidesPerPage = 3;
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} else {
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slidesPerPage = 3;
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}
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}
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}
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slidesCount = slides - slidesPerPage;
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if (currentPosition > slidesCount) {
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currentPosition -= slidesPerPage;
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}
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currentMargin = -currentPosition * (100 / slidesPerPage);
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slider.style.marginLeft = currentMargin + "%";
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if (currentPosition > 0) {
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buttons[0].classList.remove("inactive");
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}
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if (currentPosition < slidesCount) {
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buttons[1].classList.remove("inactive");
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}
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if (currentPosition >= slidesCount) {
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buttons[1].classList.add("inactive");
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}
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}
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setParams();
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function slideRight() {
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if (currentPosition != 0) {
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slider.style.marginLeft = currentMargin + 100 / slidesPerPage + "%";
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currentMargin += 100 / slidesPerPage;
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currentPosition--;
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}
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if (currentPosition === 0) {
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buttons[0].classList.add("inactive");
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}
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if (currentPosition < slidesCount) {
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buttons[1].classList.remove("inactive");
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}
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}
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function slideLeft() {
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if (currentPosition != slidesCount) {
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slider.style.marginLeft = currentMargin - 100 / slidesPerPage + "%";
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currentMargin -= 100 / slidesPerPage;
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currentPosition++;
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}
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if (currentPosition == slidesCount) {
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buttons[1].classList.add("inactive");
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}
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if (currentPosition > 0) {
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buttons[0].classList.remove("inactive");
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}
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}
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