管理学院Js

common.js

function trim(s) {
	return s.replace(/^\s*/, "").replace(/\s*$/, "");
}

/*
* 限制字数，第一个传要限制的className，第二个传限制的字数
* @author: wxl
**/
function limitTextNum(className, num) {
	var limitNum = num;
	
	$("." + className + "").each(function () {
	    var curText = $.trim($(this).text());
	    var curLength = curText.length;
	    var i = 0;
	    var myLen = 0;
	    for (; (i < curLength) && (i <= limitNum); i++) {
	        if (curText.charCodeAt(i) > 0 && curText.charCodeAt(i) < 128)
	              myLen += 2; 
	        else
	            myLen++;
	    }
	
	    // alert(curText);
	    //alert(myLen);
	
	    if (curLength > num) {
	        curText = $(this).text(curText.substring(0, myLen) + '...');
	    }
	    if (curLength == 0) {
	        $(this).text("点击标题查看详情");
	    }
});

/**
* 菜单折叠
* @author: wxl
**/
function initMenu() {
    $(".listArea").hide();
    $('.listArea:first').show();
    $('#dynamic_list .list_title').click(
    function () {
        var checkElement = $(this).next();
        if ((checkElement.is('div')) && (checkElement.is(':visible'))) {
            return false;
        }
        if ((checkElement.is('div')) && (!checkElement.is(':visible'))) {
            $(this).children("div").children("a").css("background", "url(/Content/Images/Home/ico.PNG) no-repeat left center");
            $('.listArea:visible').prev("div").children("div").children("a").css("background", "url(/Content/Images/Home/ico2.PNG) no-repeat left center");
            $('.listArea:visible').slideUp('fast');
            checkElement.slideDown('fast');
            return false;
        }
    }
    );
}

/**
*图片翻滚
*@author wxl
**/
function rollPictures() {
    var t  = 0, count;
    var rollPics = $("#pictureArea div").slice(0, index.rollNewsPicsLength);
    count = rollPics.length - 1;
    rollPics.not(':first').hide();
    $("#pageStyle .pageUp").click(function () {
        t--;
        if (t < 0) t = count;
        if (t == count) {
            $("#pictureArea div").eq(0).hide();
            $("#pictureArea div").eq(t).fadeIn("slow");
        }
        else {
            $("#pictureArea div").eq(t + 1).hide();
            $("#pictureArea div").eq(t).fadeIn("slow");
        }

    })
    $("#pageStyle .pageDown").click(function () {
        t++;
        if (t > count) t = 0;
        $("#pictureArea div").eq(t).fadeIn("slow");
        if (t == 0) {
            $("#pictureArea div").eq(count).hide();
        } else {
            $("#pictureArea div").eq(t - 1).hide();
        }

    })
    
    //设一个定时器，每三秒翻滚图片
    setInterval(function () {
        $("#pageStyle .pageDown").click();
    }, 5000)
}