模仿百度搜索框，进行联想搜索
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模仿百度搜索框，进行联想搜索
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<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8"><title>input自動補全</title><script type="text/javascript" src="js/jquery-1.4.4.min.js"></script></head><style>#searchForm {z-index: 999;position: absolute;top: 10px;text-align: center;margin: 0 auto;left: 0;right: 0;bottom: 0;}#query {width: 300px;font-size: 16px;height: 34px;line-height: 34px;box-sizing: border-box;outline: 1;border: 1px solid #d3d3d3;}#query:focus {border: 1px solid #2d78f4;}#search {width: 100px;height: 34px;color: #fff;font-family: arial;border: none;vertical-align: top;outline: none;background-color: #38f;}#search:hover {background-color: #2d78f4;cursor: pointer;}.auto {width: 300px;border: 1px solid #dedede;border-top: none;position: absolute;}.auto_out {width: 300px;height: 36px;line-height: 36px;padding-left: .5em;color: #000;background: #fff;overflow: hidden;white-space: nowrap;-o-text-overflow: ellipsis;text-overflow: ellipsis;}.auto_out.on {background: #eee;cursor: pointer;}.hidden {display: none;}</style><body><div id="searchForm"><input id='query' type="text" class="auto-inp" onBlur="shijiao()"></input><button id="search">搜索一下</button><div class="auto hidden" id="auto"></div></div><script type="text/javascript" src="js/auto.js"></script><script>var array = ['七里香', 'b0', 'b12', 'b22', '固戍', 'b4', 'b5', 'b6', '如果愛', 'b7', 'b8', 'b2', 'abd', 'ab', '西鄉', 'accd', 'abd', 'qq音樂', 'b1', 'cd', 'ccd', 'cbcv', '小王子', 'cxf', 'b0'];var autoComplete = new AutoComplete("query", "auto", array);document.getElementById("query").onkeyup = function(event) {autoComplete.start(event);}//模糊查詢方法失焦事件function shijiao() {$("#auto").empty();};</script></body></html>
// 數組去重
Array.prototype.unique = function(){this.sort();var res = [];var json = {};for (var i = 0; i < this.length; i++) {if(!json[this[i]]){res.push(this[i]);json[this[i]] = 1;}}return res;
}// 對樣式操作
var setClass = {hasClass: function(elements,cName){ // 判斷是否含有某個classif(elements.className.match(new RegExp( "(\\s|^)" + cName + "(\\s|$)") ))return true;elsereturn false;},addClass: function(elements,cName){ // 添加classif( !this.hasClass( elements,cName ) ){ elements.className += " " + cName; };},removeClass: function(elements,cName){ // 移除某個classif( this.hasClass( elements,cName ) ){ elements.className = elements.className.replace( new RegExp( "(\\s|^)" + cName + "(\\s|$)" )," " ); }}
}var Bind = function(This){return function(){This.init();}
}function AutoComplete(input,auto,arr) {this.obj = document.getElementById(input);this.autoObj = document.getElementById(auto);this.search_value = ""; //當前的搜索輸入值this.index = -1; //當前選中的DIV的索引this.value_arr = arr; //數據庫中供檢索的值 不包含重復值
}
AutoComplete.prototype = {// 初始化init: function(){var This = this;setClass.removeClass(This.autoObj,"hidden");this.autoObj.style.left = this.obj.offsetLeft + "px";this.autoObj.style.top = this.obj.offsetTop + this.obj.offsetHeight + "px";},//刪除自動完成需要的所有DIVdeleteDIV: function(){while(this.autoObj.hasChildNodes()){this.autoObj.removeChild(this.autoObj.firstChild);}setClass.addClass(this.autoObj,"hidden");},autoOnmouseover: function(index){if(index != this.index){setClass.addClass(this.autoObj.children[index],"on");setClass.removeClass(this.autoObj.children[this.index],"on");this.index = index;}},setValue: function(This){return function(){This.obj.value = this.seq;setClass.addClass(This.autoObj,"hidden");}},// 響應鍵盤pressKey: function(event){var code = event.keyCode;var length = this.autoObj.children.length;if(code == 38){ //↑setClass.removeClass(this.autoObj.children[this.index],"on");this.index--;if(this.index < 0){this.index = length - 1;}setClass.addClass(this.autoObj.children[this.index],"on");this.obj.value = this.autoObj.children[this.index].seq;}else if(code == 40){ //↓setClass.removeClass(this.autoObj.children[this.index],"on");this.index++;if(this.index > length-1){this.index = 0;}setClass.addClass(this.autoObj.children[this.index],"on");this.obj.value = this.autoObj.children[this.index].seq;}else{ //回車this.obj.value = this.autoObj.children[this.index].seq;setClass.addClass(this.autoObj,"hidden");this.index = -1;}},// 程序入口start: function(event){event = event || window.event;var code = event.keyCode;var This = this;if(code != 13 && code != 38 && code != 40){this.init();this.deleteDIV();this.search_value = this.obj.value;var valueArr = this.value_arr.unique();//去掉前后空格不能為空if(this.obj.value.replace(/(^\s*)|(\s*$)/g,"") == ""){ return;}//判斷數組中是否含有輸入的關鍵字try{var reg = new RegExp("("+ this.obj.value +")","i"); //輸入"aaa" 則 reg = /(aaa)/i}catch(e){alert(e.message); }var div_index = 0; //記錄匹配索引個數for (var i = 0; i < valueArr.length; i++) {if(reg.test(valueArr[i])){var div = document.createElement("div");div.className = "auto_out";div.seq = valueArr[i];div.index = div_index;div.innerHTML = valueArr[i].replace(reg,"<strong>$1</strong>");this.autoObj.appendChild(div);setClass.removeClass(this.autoObj,"hidden");div_index++;if(div_index == 1) {setClass.addClass(this.autoObj.firstChild,"on");this.index = 0;}div.onmouseover = function(){This.autoOnmouseover(this.index);}div.onclick = this.setValue(This);}}}else{this.pressKey(event);}window.onresize = Bind(This);}
}
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