程式碼：
<!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><title>Document</title><link rel="stylesheet" href="less/index.css"><style>    .select_text{        width:30%;        height: 20px;        padding: 8px;        border-radius: 5px;        color: grey;    }    .select_text:focus{        border-color: green;        box-shadow: 0px 0 5px grey;    }    .select_span{        position: relative;        left: -2%;        cursor: pointer;    }    .select_ul{        display: none;        width: 27%;        padding: 25px;        margin: 0;        height: 25vh;        border: 1px solid grey;        overflow: auto;    }    .select_li:hover{        background: green;    }</style></head><body>  <div id="select_container"> </div><script>function select_search(id,arr,name){    var container = document.getElementById(id)    var hidden = document.createElement('input')    hidden.setAttribute('type','hidden')    hidden.setAttribute('name',name)    var text = document.createElement('input')    text.setAttribute('type','text')    text.setAttribute('class','select_text')    var span = document.createElement('span')    span.setAttribute('class','select_span')    span.innerHTML = 'O'    var ul = document.createElement('ul')    ul.setAttribute('class','select_ul')    container.appendChild(hidden)    container.appendChild(text)    container.appendChild(span)    container.appendChild(ul)    function getValue(arr){        var lis = ''        for(var i=0;i<arr.length;i++){            lis += '<li class="select_li">'+arr[i].name+'</li>'        }        ul.innerHTML = lis    }    function searchValue(str,arr){        var retArray = new Array()        if(str==''){            retArray = arr        }else{            retArray = arr.filter(function(item){                var check = item.name.indexOf(str)                if(check!=-1){                    return item                }            })        }        return retArray    }    function chooseValue(ele){        for(var i=0;i<ele.length;i++){            var prop = ele[i].getAttribute('class')            if(prop.indexOf('select_li')!=-1){                ele[i].onclick = function(){                    var val = this.innerHTML                    text.value = val                }            }        }    }    function removeHide(){        ul.style.display = 'block'    }    function getHide(){        ul.style.display = 'none'    }    function triggerHide(){        var all = document.getElementsByTagName('*')        var arr = new Array('select_text','select_span','select_ul','select_li')        for(var i=0;i<all.length;i++){            all[i].onclick = function(e){                e.stopPropagation()                e.preventDefault()                var prop = this.getAttribute('class')                var flag = false                if(prop){                    for(var j in arr){                        var item = arr[j]                        if(prop.indexOf(item)!=-1){                            flag = true                            break                        }                    }                }                if(!flag){                    getHide()                }else{                    removeHide()                }            }        }    }    triggerHide()    text.onfocus = function(){        removeHide()        var val = this.value        var valArray = searchValue(val,arr)        getValue(valArray)        lis =  document.getElementsByTagName('li')        chooseValue(lis)    }    text.onkeyup = function(){        var val = this.value        var valArray = searchValue(val,arr)        getValue(valArray)        lis =  document.getElementsByTagName('li')        chooseValue(lis)    }    span.onclick = function(e){        var val = text.value        var valArray = searchValue(val,arr)        getValue(valArray)        lis =  document.getElementsByTagName('li')        chooseValue(lis)        e.stopPropagation()        e.preventDefault()        var style = ul.style.display        if(style=='block'){            getHide()        }else{            removeHide()        }    }}var arr = new Array(        {            id:1,            name:'a'        },        {            id:2,            name:'b'        },        {            id:3,            name:'c'        },        {            id:4,            name:'aa'        },        {            id:5,            name:'bb'        },        {            id:6,            name:'cc'        }    )    select_search('select_container',arr)</script></body></html>
原生javascript實現的選取搜尋元件

相關文章
