js正则笔记

 //内容
 var innerhtml = $('.reading_box_m').html().replace(/ tag="?[一二三四五六七八九十]+"?/ig, "");
 var innerhtml = innerhtml.replace(/ id="?\d+"?/ig, "");
 //初步匹配篇 章 节
 var regALl_Rge1 = new RegExp('<(div|p)\\s+class="?(ue_codeTitle|ue_chapterTitle|ue_sectionTitle)"?>([^<]+)</\\1>', 'ig');
 var titleLis = innerhtml.match(regALl_Rge1);

 innerhtml.replace(regALl_Rge1, function () {
 lip = lip + 1;
 //篇
 var format_1_children = $('<li><a href="#"></a></li>');
 //章
 var format_2_children = $('<li><a href="#"></a></li>');
 //节
 var format_3_children = $('<li><a href="#"></a></li>');
 var args = arguments;
 //篇
 if (args[2] == 'ue_codeTitle') {
 format_1_children.children('a').prepend('<input type="button" >').attr('href', '#' + lip).append(args[3]);
 format_1.append(format_1_children);
 //当前篇
 currF1 = format_1.children('li').last();
 f = f + 1;
 }
 //章
 else if (args[2] == 'ue_chapterTitle') {
 if (f == 0 || f != lastF) {
 format_2_children.children('a').prepend('<input type="button" >').attr('href', '#' + lip).append(args[3]);
 //当前章
 currF2 = $("<ul id='general' class='manual_book' style='display: none;'></ul>");
 currF2.append(format_2_children);
 //如果没有篇
 if (!currF1) {
 format_1.append(format_1_children);
 //当前篇
 currF1 = format_1.children('li').last();
 currF1.children('a').after(currF2).remove();
 currF2.show();
 f = 1;
 }
 else {
 currF1.children('a').after(currF2);
 }
 }
 else {
 format_2_children.children('a').prepend('<input type="button" >').attr('href', '#' + lip).append(args[3]);
 currF1.children('ul').append(format_2_children);
 }
 f2 = f2 + 1;
 lastF = f;
 }
 //节
 else if (args[2] == 'ue_sectionTitle') {
 format_3_children.children('a').prepend('<input type="button" >').attr('href', '#' + lip).append(args[3]);
 if (f2 == 0 || f2 != lastF2) {
 //当前节
 currF3 = $("<ul id='manual_1' class='list' style='display: none;' style='display: block;'></ul>");
 currF2.children('li').last().children('a').end().append(currF3);
 }
 currF3.append(format_3_children);
 lastF2 = f2;
 }
 }); 

 /*********收索关键字变色开始***********/
 function HightLight(searchList) {
 var arrStyle = [
 { style: "color:red;padding:0px 2px;" },
 { style: "color:orange;padding:0px 2px;" },
 { style: "color:yellow;padding:0px 2px;" },
 { style: "color:green;padding:0px 2px;" },
 { style: "color:aqua;padding:0px 2px;" },
 { style: "color:blue;padding:0px 2px;" },
 { style: "color:purple;padding:0px 2px;" }
 ];
 searchList = decodeURIComponent(searchList);
 if (!searchList) return;
 for (var j = 0; j < searchList.split(',').length ; j++) {
 var kyesVal = searchList.split(',')[j];
 $(".reading_box_m p").filter(function (i) {
 if ($(this).text().indexOf(kyesVal) != -1) {
 var r = RegExp(kyesVal, 'ig');
 $(this).html($(this).html().replace(r, '<span keys style=' + arrStyle[j % 7].style + ' >' + kyesVal + '</span>'));
 }
 });
 }

 }
 /*********收索关键字变色结束***********/

 //关键字搜索
 function Sercah() {
 var kyesVal = $.trim(document.getElementById('txtMenKey').value);
 //if (keys_test != "" && keys_test == kyesVal) { return; }//waitmsg("已找到对应的" + g_keys_count + "处关键字！", 1);相同关键字查询时返回
 $(".reading").children('reading_box_m p').css({ 'background': "#FFF" })
 $('span[keys]').removeAttr('style').removeAttr("id");
 g_keys = 0;
 var lip = 0;
 if (kyesVal != '' && kyesVal != '关键字查询') {
 $(".reading_box_m p").filter(function (i) {
 if ($(this).text().indexOf(kyesVal) != -1) {
 var r = RegExp(kyesVal, 'ig');
 $(this).html($(this).text().replace(r, function () {
 var arg = arguments;
 lip++;
 return '<span title=第' + lip + '处 id=keys' + lip + ' keys style="background:yellow; color:red">' + kyesVal + '</span>';
 }))
 }
 });
 keys_test = kyesVal; //关键字记录赋值
 g_keys_count = lip; //关键字次数
 if (arguments.length > 0 && arguments[0] == '0') {//有参数表示按钮点击没有查询到提示
 if (lip == 0)
 waitmsg("没有找到对应的关键字！", 4);
 else {
 waitmsg("已找到对应的" + g_keys_count + "处关键字！", 1);
 PositionKeys('down', 0);//有参数是跳转到第一个查询位置
 }
 }
 } else {
 if (arguments.length > 0 && arguments[0] == '0')//有参数表示按钮点击没有查询到提示
 $('#txtMenKey').val('关键字查询');
 keys_test = '';
 waitmsg("请输入查询关键字！", 4);
 };
 };

 //定位关键字
 function PositionKeys(t, c) {

 var countkey = parseInt(g_keys_count);
 if (countkey == 0) {
 waitmsg("没有找到对应的关键字！", 4);
 return;
 }
 if (t == "down") {
 g_keys = g_keys + 1;
 if (g_keys > countkey) {
 g_keys = 1;
 }
 }
 else if (t == "up") {
 g_keys = g_keys - 1;
 if (g_keys <= 0) {
 g_keys = countkey;
 }
 }
 $("span[id^='keys']").css("border", "none");
 $("#keys" + g_keys).css("border", "red 1px solid");
 var topVal = $('.reading_box').scrollTop() + parseInt($("#keys" + g_keys).offset().top);
 $('.reading_box').stop(true).animate({ scrollTop: (topVal - 30) }, 500);
 };