用javascript仿ie的自动完成

来源：互联网发布：人类群婚知乎编辑：程序博客网时间：2024/04/29 17:04

最近在写一个javascript框架,看见网上有不少自动完成功能的表单,所以一时兴起,用javascript写了一个,为自己的框架增点色.

步骤:1.传入两个参数,第一个是你要绑定的表单对象,第二个是你要检索的数组.

2.动态建立一个div做为你要自动完成的层,设置属性和事件(我在这里并没有设置div的visible和display属性,而是将它的left设为"-1000px",这样就移出了浏览器之外,达到了隐藏的效果.

3.对传入的数组进行检索,找出与输入内容匹配或相近的项,并将其存入一个新的数组.这里用正则表达式进行了四次迭代,写的不好,还望见谅.

4.对存入检索后数据的那个新数组进行处理,去掉内容重复的项,并将其写进div内.

5.设置div的left,top,width即可.

下面看给出的完整代码:

if(!sx)
var sx={};
sx.activex={};
sx.activex.autocomplete={
    bind:function(a,s){
            var d=document.createElement("div");
            d.style.position="absolute";
            d.flag="autocomplete";
                document.body.appendChild(d);
                d.style.left="-1000px";
                d.style.height="100px";
                d.style.overflow="auto";
                a.onblur=function(){
                    if(document.elementFromPoint(window.event.clientX,window.event.clientY).flag=="autocomplete" || document.elementFromPoint(window.event.clientX,window.event.clientY).parentNode.flag=="autocomplete")
                    return;
                    d.innerHTML="";
                    d.style.left="-1000px";
                }
            a.onkeyup=function(){
                if(a.value=="") {
                    d.innerHTML="";
                    return;
                }
                d.innerHTML="";
                var t=[];
                for(var i in s){
                if(eval("/^"+a.value+"$/i").test(s[i])){
                    t.push(s[i]);
                    
                }
                }
                for(var i in s){
                if(eval("/^"+a.value+".+$/i").test(s[i])){
                    t.push(s[i]);
                    
                }
                }
                for(var i in s){
                if(eval("/^.+"+a.value+"$/i").test(s[i])){
                    t.push(s[i]);
                    
                }
                }
                for(var i in s){
                if(eval("/^.+"+a.value+".+$/i").test(s[i])){
                    t.push(s[i]);
                    
                }
                }
                for(var e=0;e<=t.length-2;e++){
                    for(var e1=e+1;e1<=t.length-1;e1++){
                        if(t[e]==t[e1]){
                            for(var e2=e1+1;e2<t.length;e2++){
                                if(t[e2]){
                                    t[e2-1]=t[e2];
                                    
                                }
                            }
                            t.length=t.length-1;
                        }
                    }
                }
                //alert(t); 
                for(var i in t){
                    var p=document.createElement("div");
                    p.innerText=t[i];
                    p.onmouseenter=function(){
                        this.style.backgroundColor="blue";
                    }
                    p.onmouseleave=function(){
                        this.style.backgroundColor="white";
                    }
                    p.onclick=function(){
                        a.value=this.innerText;
                        d.style.left="-1000px";
                    }
                    d.appendChild(p)
                }
                d.style.top=a.offsetTop+a.offsetHeight+"px";
                d.style.left=a.offsetLeft+"px";
                d.style.width=a.offsetWidth+"px";
                
            }
    }
}.

调用的html代码:

<html>
    <head>
        <title>Untitled Document</title>
    </head>
    <body>
        
        <script src="kongjian.js"></script>
        <input type="text" size="15"  id="a">
        <input type="text" size="15"  id="a1">
        <script>
            sx.activex.autocomplete.bind(document.getElementById("a"),["asd","a","sad","er","ewrew","aadasd","wqqwrqw","asasf","qweqw"]);
        sx.activex.autocomplete.bind(document.getElementById("a1"),["asd","a","sad","er","ewrew","aadasd","wqqwrqw","asasf","qweqw"]);
        </script>
    </body>
</html>

代码没有优化,还请多多包涵,这里给出一个思路,让各位见笑了.