input模糊搜索功能

時間 2019-11-08
標籤 input 模糊搜索功能简体版
原文原文鏈接
<!doctype html>
<meta charset="utf-8">
<style type="text/css">
    body {
        margin-left: 0px;
        margin-top: 0px;
        margin-right: 0px;
        margin-bottom: 0px;
    }

    .auto_hidden {
        width: 204px;
        border-top: 1px solid #333;
        border-bottom: 1px solid #333;
        border-left: 1px solid #333;
        border-right: 1px solid #333;
        position: absolute;
        display: none;
    }

    .auto_show {
        width: 204px;
        border-top: 1px solid #333;
        border-bottom: 1px solid #333;
        border-left: 1px solid #333;
        border-right: 1px solid #333;
        position: absolute;
        z-index: 9999; /* 設置對象的層疊順序 */
        display: block;
    }

    .auto_onmouseover {
        color: #ffffff;
        background-color: highlight;
        width: 100%;
    }

    .auto_onmouseout {
        color: #000000;
        width: 100%;
        background-color: #ffffff;
    }
</style>
<script language="javascript" type="text/javascript">
    var $ = function (id) {
        return "string" == typeof id ? document.getElementById(id) : id;
    }
    var Bind = function (object, fun) {
        return function () {
            return fun.apply(object, arguments);
        }
    }
    function AutoComplete(obj, autoObj, arr) {
        this.obj = $(obj); //輸入框
        this.autoObj = $(autoObj);//DIV的根節點
        this.value_arr = arr; //不要包含重複值
        this.index = -1; //當前選中的DIV的索引
        this.search_value = ""; //保存當前搜索的字符
    }
    AutoComplete.prototype = {
        //初始化DIV的位置
        init: function () {
            this.autoObj.style.left = this.obj.offsetLeft + "px";
            this.autoObj.style.top = this.obj.offsetTop + this.obj.offsetHeight + "px";
            this.autoObj.style.width = this.obj.offsetWidth - 2 + "px";//減去邊框的長度2px
        },
        //刪除自動完成須要的全部DIV
        deleteDIV: function () {
            while (this.autoObj.hasChildNodes()) {
                this.autoObj.removeChild(this.autoObj.firstChild);
            }
            this.autoObj.className = "auto_hidden";
        },
        //設置值
        setValue: function (_this) {
            return function () {
                _this.obj.value = this.seq;
                _this.autoObj.className = "auto_hidden";
            }
        },
        //模擬鼠標移動至DIV時，DIV高亮
        autoOnmouseover: function (_this, _div_index) {
            return function () {
                _this.index = _div_index;
                var length = _this.autoObj.children.length;
                for (var j = 0; j < length; j++) {
                    if (j != _this.index) {
                        _this.autoObj.childNodes[j].className = 'auto_onmouseout';
                    } else {
                        _this.autoObj.childNodes[j].className = 'auto_onmouseover';
                    }
                }
            }
        },
        //更改classname
        changeClassname: function (length) {
            for (var i = 0; i < length; i++) {
                if (i != this.index) {
                    this.autoObj.childNodes[i].className = 'auto_onmouseout';
                } else {
                    this.autoObj.childNodes[i].className = 'auto_onmouseover';
                    this.obj.value = this.autoObj.childNodes[i].seq;
                }
            }
        },

        //響應鍵盤
        pressKey: function (event) {
            var length = this.autoObj.children.length;
            //光標鍵"↓"
            if (event.keyCode == 40) {
                ++this.index;
                if (this.index > length) {
                    this.index = 0;
                } else if (this.index == length) {
                    this.obj.value = this.search_value;
                }
                this.changeClassname(length);
            }
                //光標鍵"↑"
            else if (event.keyCode == 38) {
                this.index--;
                if (this.index < -1) {
                    this.index = length - 1;
                } else if (this.index == -1) {
                    this.obj.value = this.search_value;
                }
                this.changeClassname(length);
            }
                //回車鍵
            else if (event.keyCode == 13) {
                this.autoObj.className = "auto_hidden";
                this.index = -1;
            } else {
                this.index = -1;
            }
        },
        //程序入口
        start: function (event) {
            if (event.keyCode != 13 && event.keyCode != 38 && event.keyCode != 40) {
                this.init();
                this.deleteDIV();
                this.search_value = this.obj.value;
                var valueArr = this.value_arr;
                valueArr.sort();
                if (this.obj.value.replace(/(^\s*)|(\s*$)/g, '') == "") { return; }//值爲空，退出
                try { var reg = new RegExp("(" + this.obj.value + ")", "i"); }
                catch (e) { return; }
                var div_index = 0;//記錄建立的DIV的索引
                for (var i = 0; i < valueArr.length; i++) {
                    if (reg.test(valueArr[i])) {
                        var div = document.createElement("div");
                        div.className = "auto_onmouseout";
                        div.seq = valueArr[i];
                        div.onclick = this.setValue(this);
                        div.onmouseover = this.autoOnmouseover(this, div_index);
                        div.innerHTML = valueArr[i].replace(reg, "<strong>$1</strong>");//搜索到的字符粗體顯示
                        this.autoObj.appendChild(div);
                        this.autoObj.className = "auto_show";
                        div_index++;
                    }
                }
            }
            this.pressKey(event);
            window.onresize = Bind(this, function () { this.init(); });
        }
    }
</script>
<html>


<body>
    <div align="center" style="padding-top:50px">
        <input type="text" style="width:300px;height:20px;font-size:14pt;" placeholder="請輸入a或b模擬效果" id="o" onkeyup="autoComplete.start(event)">
    </div>
    <div class="auto_hidden" id="auto"><!--自動完成 DIV--></div>
    <script>
        var autoComplete = new AutoComplete('o', 'auto', ['b0', 'b12', 'b22', 'b3', 'b4', 'b5', 'b6', 'b7', 'b8', 'b2', 'abd', 'ab', 'acd', 'accd', 'b1', 'cd', 'ccd', 'cbcv', 'cxf']);
    </script>
</body>
</html>
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