jQuery list pagination code with search jump function

js code

<script>
	var page = 1;
	var limit = 10;
	var sumPage = 6;
	var size = 28;
	$(function(){
		page = parseInt(page);
		limit = parseInt(limit);  //防止页码出现字符串，转换类型
		
		loadClass();
		setPageMsg();
		initPage();
		
		$("#pageLt").find("a").unbind("click").click(function(){
			$("#pageLt").find("a").removeClass("active");
			$(this).addClass("active");
			
			limit = parseInt($(this).text());
			// 分页执行的fun
		});
	});

	function loadClass(){
		
		if(limit == 10){
			$("#pageLt").find("a").removeClass("active");
			$("#pageLt").find("a").eq(0).addClass("active");
		}else if(limit == 20){
			$("#pageLt").find("a").removeClass("active");
			$("#pageLt").find("a").eq(1).addClass("active");
		}else if(limit == 30){
			$("#pageLt").find("a").removeClass("active");
			$("#pageLt").find("a").eq(2).addClass("active");
		}else if(limit == 40){
			$("#pageLt").find("a").removeClass("active");
			$("#pageLt").find("a").eq(3).addClass("active");
		}
	}

	/** 初始化分页控件 **/
	function initPage(){
		
		$(".down_page").click(function(){  //上一页
			if(page != 1){
				page = page - 1;
				$("#nowPage").text(page);
				// 分页执行的fun
			}else{
				alert("已经是第一页了","warning");
			}
		});
		$(".up_page").click(function(){   //下一页
			if(page < parseInt(sumPage)){
				page = page + 1;
				$("#nowPage").text(page);
				// 分页执行的fun
			}else{
				alert("已经是最后一页了","warning");
			}
		});
		$(".jump_page").click(function(){
			var pageNum = $("#pageNum").val();
			if(parseInt(pageNum) <= parseInt(sumPage)){
				page = parseInt(pageNum);
				$("#nowPage").text(page);
				// 分页执行的fun
			}else{
				alert("页数不能大于总页数","warning");
			}
		});
	}

	function setPageMsg(){
		$("#count").text(size);
		$("#nowPage").text(page);
		$("#allPage").text(""+sumPage+"页");
	} 
</script>

Jquery is one of the important technologies required for web programming. Jquery is another excellent Javascrīpt framework after prototype. It is a lightweight js library that is compatible with CSS3 and various browsers. jQuery enables users to more easily process HTML documents and events, implement animation effects, and easily provide AJAX interaction for websites. Another big advantage of jQuery is that its documentation is very complete and its various applications are explained in detail. There are also many mature plug-ins to choose from. jQuery can keep the code and HTML content of the user's HTML page separated. That is to say, there is no need to insert a bunch of js in the HTML to call the command. You only need to define the id.