JS實(shí)現(xiàn)聯(lián)想、自動(dòng)補(bǔ)齊國(guó)家或地區(qū)名稱(chēng)的功能
1.JS部分
function autocomplete(inp, arr) { /*函數(shù)主要有兩個(gè)參數(shù):文本框元素和自動(dòng)補(bǔ)齊的完整數(shù)據(jù)*/ var currentFocus; /* 監(jiān)聽(tīng) - 在寫(xiě)入時(shí)觸發(fā) */ inp.addEventListener("input", function(e) { var a, b, i, val = this.value; /*關(guān)閉已經(jīng)打開(kāi)的自動(dòng)完成值列表*/ closeAllLists(); if (!val) { return false;} currentFocus = -1; /*創(chuàng)建列表*/ a = document.createElement("DIV"); a.setAttribute("id", this.id + "autocomplete-list"); a.setAttribute("class", "autocomplete-items"); /*添加 DIV 元素*/ this.parentNode.appendChild(a); /*循環(huán)數(shù)組...*/ for (i = 0; i < arr.length; i++) { /*檢查選項(xiàng)是否以與文本字段值相同的字母開(kāi)頭*/ if (arr[i].substr(0, val.length).toUpperCase() == val.toUpperCase()) { /*為匹配元素創(chuàng)建 DIV*/ b = document.createElement("DIV"); /*使匹配字母變粗體*/ b.innerHTML = "<strong>" + arr[i].substr(0, val.length) + "</strong>"; b.innerHTML += arr[i].substr(val.length); /*insert a input field that will hold the current array item's value:*/ b.innerHTML += "<input type='hidden' value='" + arr[i] + "'>"; /*execute a function when someone clicks on the item value (DIV element):*/ b.addEventListener("click", function(e) { /*insert the value for the autocomplete text field:*/ inp.value = this.getElementsByTagName("input")[0].value; /*close the list of autocompleted values, (or any other open lists of autocompleted values:*/ closeAllLists(); }); a.appendChild(b); } } }); /*execute a function presses a key on the keyboard:*/ inp.addEventListener("keydown", function(e) { var x = document.getElementById(this.id + "autocomplete-list"); if (x) x = x.getElementsByTagName("div"); if (e.keyCode == 40) { /*If the arrow DOWN key is pressed, increase the currentFocus variable:*/ currentFocus++; /*and and make the current item more visible:*/ addActive(x); } else if (e.keyCode == 38) { //up /*If the arrow UP key is pressed, decrease the currentFocus variable:*/ currentFocus--; /*and and make the current item more visible:*/ addActive(x); } else if (e.keyCode == 13) { /*If the ENTER key is pressed, prevent the form from being submitted,*/ e.preventDefault(); if (currentFocus > -1) { /*and simulate a click on the "active" item:*/ if (x) x[currentFocus].click(); } } }); function addActive(x) { /*a function to classify an item as "active":*/ if (!x) return false; /*start by removing the "active" class on all items:*/ removeActive(x); if (currentFocus >= x.length) currentFocus = 0; if (currentFocus < 0) currentFocus = (x.length - 1); /*add class "autocomplete-active":*/ x[currentFocus].classList.add("autocomplete-active"); } function removeActive(x) { /*a function to remove the "active" class from all autocomplete items:*/ for (var i = 0; i < x.length; i++) { x[i].classList.remove("autocomplete-active"); } } function closeAllLists(elmnt) { /*close all autocomplete lists in the document, except the one passed as an argument:*/ var x = document.getElementsByClassName("autocomplete-items"); for (var i = 0; i < x.length; i++) { if (elmnt != x[i] && elmnt != inp) { x[i].parentNode.removeChild(x[i]); } } } /*execute a function when someone clicks in the document:*/ document.addEventListener("click", function (e) { closeAllLists(e.target); }); } /*數(shù)組 - 包含所有國(guó)家或地區(qū)名*/ var countries = ["Afghanistan","Albania","Algeria","Andorra","Angola","Anguilla","Antigua & Barbuda","Argentina","Armenia","Aruba","Australia","Austria","Azerbaijan","Bahamas","Bahrain","Bangladesh","Barbados","Belarus","Belgium","Belize","Benin","Bermuda","Bhutan","Bolivia","Bosnia & Herzegovina","Botswana","Brazil","British Virgin Islands","Brunei","Bulgaria","Burkina Faso","Burundi","Cambodia","Cameroon","Canada","Cape Verde","Cayman Islands","Central Arfrican Republic","Chad","Chile","China","Colombia","Congo","Cook Islands","Costa Rica","Cote D Ivoire","Croatia","Cuba","Curacao","Cyprus","Czech Republic","Denmark","Djibouti","Dominica","Dominican Republic","Ecuador","Egypt","El Salvador","Equatorial Guinea","Eritrea","Estonia","Ethiopia","Falkland Islands","Faroe Islands","Fiji","Finland","France","French Polynesia","French West Indies","Gabon","Gambia","Georgia","Germany","Ghana","Gibraltar","Greece","Greenland","Grenada","Guam","Guatemala","Guernsey","Guinea","Guinea Bissau","Guyana","Haiti","Honduras","Hong Kong China","Hungary","Iceland","India","Indonesia","Iran","Iraq","Ireland","Isle of Man","Israel","Italy","Jamaica","Japan","Jersey","Jordan","Kazakhstan","Kenya","Kiribati","Kosovo","Kuwait","Kyrgyzstan","Laos","Latvia","Lebanon","Lesotho","Liberia","Libya","Liechtenstein","Lithuania","Luxembourg","Macau China","Macedonia","Madagascar","Malawi","Malaysia","Maldives","Mali","Malta","Marshall Islands","Mauritania","Mauritius","Mexico","Micronesia","Moldova","Monaco","Mongolia","Montenegro","Montserrat","Morocco","Mozambique","Myanmar","Namibia","Nauro","Nepal","Netherlands","Netherlands Antilles","New Caledonia","New Zealand","Nicaragua","Niger","Nigeria","North Korea","Norway","Oman","Pakistan","Palau","Palestine","Panama","Papua New Guinea","Paraguay","Peru","Philippines","Poland","Portugal","Puerto Rico","Qatar","Reunion","Romania","Russia","Rwanda","Saint Pierre & Miquelon","Samoa","San Marino","Sao Tome and Principe","Saudi Arabia","Senegal","Serbia","Seychelles","Sierra Leone","Singapore","Slovakia","Slovenia","Solomon Islands","Somalia","South Africa","South Korea","South Sudan","Spain","Sri Lanka","St Kitts & Nevis","St Lucia","St Vincent","Sudan","Suriname","Swaziland","Sweden","Switzerland","Syria","Taiwan China","Tajikistan","Tanzania","Thailand","Timor L'Este","Togo","Tonga","Trinidad & Tobago","Tunisia","Turkey","Turkmenistan","Turks & Caicos","Tuvalu","Uganda","Ukraine","United Arab Emirates","United Kingdom","United States of America","Uruguay","Uzbekistan","Vanuatu","Vatican City","Venezuela","Vietnam","Virgin Islands (US)","Yemen","Zambia","Zimbabwe"]; /*傳遞參數(shù)*/ autocomplete(document.getElementById("myInput"), countries);
2.CSS部分
* { box-sizing: border-box; } body { font: 16px Arial; } .autocomplete { /*the container must be positioned relative:*/ position: relative; display: inline-block; } input { border: 1px solid transparent; background-color: #f1f1f1; padding: 10px; font-size: 16px; } input[type=text] { background-color: #f1f1f1; width: 100%; } input[type=submit] { background-color: DodgerBlue; color: #fff; } .autocomplete-items { position: absolute; border: 1px solid #d4d4d4; border-bottom: none; border-top: none; z-index: 99; /*position the autocomplete items to be the same width as the container:*/ top: 100%; left: 0; right: 0; } .autocomplete-items div { padding: 10px; cursor: pointer; background-color: #fff; border-bottom: 1px solid #d4d4d4; } .autocomplete-items div:hover { /*when hovering an item:*/ background-color: #e9e9e9; } .autocomplete-active { /*when navigating through the items using the arrow keys:*/ background-color: DodgerBlue !important; color: #ffffff; }
3.HTML部分
<!-- 關(guān)閉自帶的自動(dòng)補(bǔ)全功能 --> <form autocomplete="off" action="/action_page.php"> <div class="autocomplete" style="width:300px;"> <input id="myInput" type="text" name="myCountry" placeholder="輸入國(guó)家或地區(qū)英文名..."> </div> <input type="submit"> </form>
4.效果圖
以上就是JS實(shí)現(xiàn)聯(lián)想、自動(dòng)補(bǔ)齊國(guó)家或地區(qū)名稱(chēng)的功能的詳細(xì)內(nèi)容,更多關(guān)于JS 聯(lián)想、自動(dòng)補(bǔ)齊功能的資料請(qǐng)關(guān)注腳本之家其它相關(guān)文章!
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