book_admin/public/assets/clientweb/js/frontend/book_details.js

var GetLength = function (str) {
    ///<summary>获得字符串实际长度，中文2，英文1</summary>
    ///<param name="str">要获得长度的字符串</param>
	if(!str) return 0;
    var realLength = 0, len = str.length, charCode = -1;
    for (var i = 0; i < len; i++) {
        charCode = str.charCodeAt(i);
        if (charCode >= 0 && charCode <= 128) realLength += 1;
        else realLength += 2;
    }
    return realLength;
};

//js截取字符串，中英文都能用  
//如果给定的字符串大于指定长度，截取指定长度返回，否者返回源字符串。  
//字符串，长度  

/** 
 * js截取字符串，中英文都能用 
 * @param str：需要截取的字符串 
 * @param len: 需要截取的长度 
 */
function cutstr(str, len) {
    var str_length = 0;
    var str_len = 0;
    str_cut = new String();
    str_len = str.length;
    for (var i = 0; i < str_len; i++) {
        a = str.charAt(i);
        str_length++;
        if (escape(a).length > 4) {
            //中文字符的长度经编码之后大于4  
            str_length++;
        }
        str_cut = str_cut.concat(a);
        if (str_length >= len) {
            str_cut = str_cut.concat("...");
            return str_cut;
        }
    }
    //如果给定字符串小于指定长度，则返回源字符串；  
    if (str_length < len) {
        return str;
    }
}

$(function () { 
    // 截取内容详情
    var MAX_NUM = 90;
    var str_initial = $('.j_cutstrtxt').text();
    if(GetLength(str_initial)>MAX_NUM){
        var _txt = cutstr(str_initial, MAX_NUM);
        $('.j_cutstrtxt').text(_txt);
    }else{
        $('.bd_description_box a').hide();
    }

    $('.bd_description_box a').click(function(){
        $(this).parent().removeClass('bd_description_open');
        $('.j_cutstrtxt').text(str_initial);
    });
    
    
    cpslog([701,{map:getmapobj()}]);
}); 



function getmapobj(){
	//log
	var swsearch = window.location.search.substr(1);
	if(!swsearch) return '';
	var omap = {};
	try{
		swsearch = swsearch.split('&');
		for(var i = 0; i<swsearch.length; i++){
			var obj = asplitsty(swsearch[i],'=');
			if(obj)	omap[obj[0]] = obj[1];
		}
		if(/\/book\/menu/.test(window.location.pathname) && !omap.page){
			omap.page = 1;
		}
		return omap;
	}catch(e){
		return '';
	}
}

function asplitsty(str,separator){
	var reg = new RegExp(separator);
	if(reg.test(str)){
		return str.split(separator);
	}
	return '';
}