オリジナルjsは改ページ効果を実現します。
本論文の例では、jsの改ページ効果を実現するための具体的なコードを共有します。
効果は以下の通りです
コード:
効果は以下の通りです
コード:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style type="text/css">
</style>
</head>
<body>
<div id="page-nation"></div>
<script src="./page.js"></script>
<script>
//
const Api=new pageNation({
el:"#page-nation",//
page:1,//
size:5,// 5,10,15,20
total:100,//
styUrl:
'./page.css',// （ ）
IsShowBtn: {//
choosePageSize: true,//
IsShowPrevOrNextBtn: true,//
IsShowEnterBtn: true,//
IsShowTotalPage:true,//
},
callback:function(page,size,total){
console.log(page,size,total);
// ajax
}
});
</script>
</body>
</html>
var pageNation;
pageNation = (function () {
function extend(target, source) {
for (var obj in source) {
target[obj] = source[obj];
}
return target;
}
function pageNation(options) {
var defaultOptions = {
el: "body",//
page: 1,
size: 10,
total: 0,
styUrl: 'style.css',
callback: null,
IsShowBtn: {//
choosePageSize: true,//
IsShowPrevOrNextBtn: true,//
IsShowEnterBtn: true,//
IsShowTotalPage:true,//
}
};
this.options = extend(defaultOptions, options) || {};
this.options.el = document.querySelectorAll(this.options.el)[0];
this.pageT = Math.ceil(this.options.total / this.options.size);
this.init();
if (!document.querySelector("#dynamic-style")) {
this.pageStyle();
}
//this.options.callback(1,self.options.size,self.options.total);
}
var proto = pageNation.prototype || {};
proto.rander = function (page, size, total) {
this.options.page = !!page ? page : 1;
this.options.size = !!size ? size : 10;
this.options.total = !!total ? total : 0;//
this.pageT = Math.ceil(this.options.total / this.options.size);
this.init();
this.page_nation = null;
};
proto.init = function () {
var self = this;
var pageNum = function (page) {//
return (function () {
let ol = document.createElement("ol");
ol.classList.add("page-ol");
let p = !!page ? page : 1;
let tPage = Math.ceil(self.options.total / self.options.size);
let s = p <= 3 ? 1 : p > (tPage - 3) ? tPage - 4 : p - 2;
s=s==0?1:s;
for (let i = s; i < (s + 5); i++) {
if (i > tPage) {
break;
}
let li = document.createElement("li");
li.innerText = i;
if (i == p) {
li.classList.add("hover");
}
ol.appendChild(li);
}
return ol;
})(page);
};
var sizeNum = function (size) {// size
return (function () {
let select = document.createElement("select");
select.setAttribute("class", "page-Select");
let s = !!size ? size : 10;
//let tPage=Math.ceil(self.options.total/self.options.size);
for (let i = 5; i <= (5 * 4); i += 5) {
let option = document.createElement("option");
option.value = i;
option.innerText = i;
if (i === self.options.size) {
option.setAttribute("selected", "selected");
}
select.appendChild(option);
}
return select;
})(size);
};
var prevBtn = function () {//
return (function () {
let button = document.createElement("span");
button.setAttribute("class", "prev-btn");
button.innerText = " ";
if (self.options.page == 1) {
button.classList.add("disabled")
};
return button;
})();
};
var nextBtn = function () {//
return (function () {
let button = document.createElement("span");
button.setAttribute("class", "next-btn");
button.innerText = " ";
if (self.options.page == self.pageT) {
button.classList.add("disabled")
}
;
return button;
})();
};
var pageMark = function () {//
return (function () {
let span = document.createElement("span");
span.setAttribute("class", "pageMark");
span.innerHTML = "<strong>" + self.options.page + "</strong> / <strong>" + Math.ceil(self.options.total / self.options.size) + "</strong>";
return span;
})();
};
var enterBtn = function () {//
return (function () {
let button = document.createElement("span");
button.setAttribute("class", "enter-btn");
let ipt = document.createElement("input");
ipt.value = self.options.page;
ipt.setAttribute("type", "text");
let b = document.createElement("span");
b.setAttribute("class", "enterBtn");
b.innerText = " ";
button.appendChild(ipt);
button.appendChild(b);
return button;
})();
};
let page_nation = self.options.el.querySelector(".page-nation");
if (page_nation != null && page_nation != "undefind") {
page_nation.innerHTML = "";
}
else {
page_nation = document.createElement("div");
page_nation.classList.add("page-nation");
self.options.el.appendChild(page_nation);
}
page_nation.appendChild(new pageNum(self.options.page));
self.options.IsShowBtn.choosePageSize&&page_nation.appendChild(new sizeNum(self.options.size));
self.options.IsShowBtn.IsShowPrevOrNextBtn&&page_nation.appendChild(new prevBtn());
self.options.IsShowBtn.IsShowPrevOrNextBtn&&page_nation.appendChild(new nextBtn());
page_nation.appendChild(new pageMark());
self.options.IsShowBtn.IsShowEnterBtn&&page_nation.appendChild(new enterBtn());
self.page_nation = document.querySelector(".page-nation");
this.switchPage(self.options.callback);
this.switchSize(self.options.callback);
return self;
};
proto.pageStyle = function () {
let headDoc = document.querySelector("head");
var linkTag = document.createElement("link");
var cssURL = this.options.styUrl;
linkTag.id = 'dynamic-style';
linkTag.href = cssURL;
linkTag.setAttribute('rel', 'stylesheet');
linkTag.setAttribute('media', 'all');
linkTag.setAttribute('type', 'text/css');
headDoc.appendChild(linkTag);
};
proto.switchPage = function (fun) {
let self = this;
let lis = this.page_nation.children[0].children;
for (let i = 0, len = lis.length; i < len; i++) {
lis[i].onclick = function () {
self.options.page = this.innerText;
self.rander(self.options.page, self.options.size, self.options.total);
};
}
this.options.el.querySelectorAll(".prev-btn")[0].onclick = function (e) {
//console.time("rr");
self.options.page = --self.options.page;
self.rander(self.options.page, self.options.size, self.options.total);
//console.timeEnd("rr");
};
this.options.el.querySelectorAll(".next-btn")[0].onclick = function (e) {
self.options.page = ++self.options.page;
self.rander(self.options.page, self.options.size, self.options.total);
};
this.options.el.querySelectorAll(".enterBtn")[0].onclick = function (e) {
let val = this.previousElementSibling.value;
if (!val || val > self.pageT || val < 1) {
alert(" ！");
return false;
} else {
self.options.page = val;
self.rander(self.options.page, self.options.size, self.options.total);
}
};
fun(self.options.page, self.options.size, self.options.total);
};
proto.switchSize = function (fun) {
let self = this;
let lis = this.page_nation.children[1];
lis.onchange = function () {
self.options.size = Number(this.value);
self.rander(1, self.options.size, self.options.total);
fun(1, self.options.size, self.options.total);
}
};
return pageNation;
})();