前台效果：

html

<div class="container" style="z-index: 999" id="searchDiv"> <div class="keyword-search"> 查找： <input id="key" type="text" style="width: 200px;" placeholder="关键词" /> <a href="javascript:void(0);" class="prev" onclick='wordSearch(1)'><i class="c-icon"></i></a> <a href="javascript:void(0);" class="next" onclick='wordSearch()'><i class="c-icon"></i></a> </div> </div>

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js

<script>//搜索功能 var oldKey0 = ""; var index0 = -1;var oldCount0 = 0; var newflag = 0; var currentLength = 0; function wordSearch(flg) { var key = $("#key").val(); //取key值 if (!key) { return; //key为空则退出 } getArray(); focusNext(flg); } function focusNext(flg) { if (newflag == 0) {//如果新搜索,index清零 index0 = 0; } if (!flg) { if (oldCount0 != 0) {//如果还有搜索 if (index0 < oldCount0) {//左边如果没走完，走左边 focusMove(index0); index0++; } else if (index0 == oldCount0) {//都走完了 index0 = 0; focusMove(index0); index0++; } else { index0 = 0;//没确定 focusMove(index0); index0++; } } } else { if (oldCount0 != 0) {//如果还有搜索 if (index0 <= oldCount0 && index0 > 0) {//左边如果没走完，走左边 index0--; focusMove(index0); } else if (index0 == 0) {//都走完了 index0 = oldCount0; index0-- focusMove(index0); } } } } function getArray() { newflag = 1; $(".contrast .result").removeClass("res"); var key = $("#key").val(); //取key值 if (!key) { oldKey0 = ""; return; //key为空则退出 } if (oldKey0 != key || $(".current").length != currentLength) { //重置 index0 = 0; var index = 0; $(".contrast .result").each(function () { $(this).replaceWith($(this).html()); }); pos0 = new Array(); if ($(".contrast-wrap").hasClass("current")) { currentLength = $(".current").length; $(".current .contrast").each(function () { $(this).html($(this).html().replace(new RegExp(key, "gm"), "<span id='result" + (index++) + "' class='result'>" + key + "</span>")); // 替换 }); } else { $(".contrast-wrap").addClass('current'); currentLength = $(".current").length; $(".contrast").each(function () { $(this).html($(this).html().replace(new RegExp(key, "gm"), "<span id='result" + (index++) + "' class='result'>" + key + "</span>")); // 替换 }); } //$("#key").val(key); oldKey0 = key; //$(".contrast .result").each(function () { // $(this).parents('.contrast-wrap').addClass('current'); // pos0.push($(this).offset().top); //}); // pos0.push($(".contrast .result:eq(2)").offset().top - $(".contrast .result:eq(2)").parents(".contrast").offset().top); oldCount0 = $(".contrast .result").length; newflag = 0; } } function focusMove(index0) { $(".contrast .result:eq(" + index0 + ")").parents('.contrast-wrap').addClass('current'); $(".contrast .result:eq(" + index0 + ")").addClass("res"); var top = $(".contrast .result:eq(" + index0 + ")").offset().top + $(".contrast .result:eq(" + index0 + ")").parents(".contrast").scrollTop(); var intop = top - $(".contrast .result:eq(" + index0 + ")").parents(".contrast").offset().top; $(".contrast .result:eq(" + index0 + ")").parents(".contrast").animate({ scrollTop: intop }, 200); if ($(".contrast .result:eq(" + index0 + ")").parents(".contrast").scrollTop() == 0) { $("html, body").animate({ scrollTop: top - 200 }, 200); } else { $("html, body").animate({ scrollTop: $(".contrast .result:eq(" + index0 + ")").parents(".contrast").offset().top - 200 }, 200); } } $('#key').change(function () { if ($('#key').val() == "") { index0 = 0; $(".contrast .result").each(function () { $(this).replaceWith($(this).html()); }); oldKey0 = ""; } }); </script>

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