我在页面上运行了一个自动完成脚本,可以更轻松地搜索400多个名称,但是名称列表每隔几周就会添加或删除一些项。
为了使此操作更容易跟上,我想使用REST API调用来调用列表,以返回在文档加载时运行的这些名称的数组。
我有一个for
循环,当返回此列表时将运行该循环,并且仅选择不带任何元数据的名称,并将其添加到第二个数组中,当提供完成建议时,自动完成功能应查看该数组。
我已经成功完成了REST API调用并将所有内容添加到功能数组中,但是在文本框中键入内容时,自动完成不会返回任何建议。
请注意,自动完成代码已从w3的Countries of the World autocomplete example中提取出来,并且此代码适用于已定义的数组,而不是调用返回的JSON数组。
<form autocomplete="off" action="/action_page.php">
<div class="autocomplete" style="width:200px;">
<input id="myInput" type="text" name="mySystem" placeholder="Please Enter System Name...">
</div>
var countries = [ ];
document.onload = getApplications();
function getApplications(){
$.ajax({
url: "URL/_api/web/lists/getbytitle('Application List')/items?$select=Title&$top=1000",
type: "GET",
headers: {"accept": "application/json;odata=verbose"},
success: function (data) {
var appresults = data.d.results;
for(var obj in appresults){
var app = appresults[obj].Title;
countries = countries.concat(app);
}
console.log(countries);
}
});
}
function autocomplete(inp, arr) {
var currentFocus;
inp.addEventListener("input", function(e) {
var a, b, i, val = this.value;
closeAllLists();
if (!val) { return false;}
currentFocus = -1;
a = document.createElement("DIV");
a.setAttribute("id", this.id + "autocomplete-list");
a.setAttribute("class", "autocomplete-items");
this.parentNode.appendChild(a);
for (i = 0; i < arr.length; i++) {
if (arr[i].substr(0, val.length).toUpperCase() == val.toUpperCase()) {
b = document.createElement("DIV");
b.innerHTML = "<strong>" + arr[i].substr(0, val.length) + "</strong>";
b.innerHTML += arr[i].substr(val.length);
b.innerHTML += "<input type='hidden' value='" + arr[i] + "'>";
b.addEventListener("click", function(e) {
inp.value = this.getElementsByTagName("input")[0].value;
closeAllLists();
});
a.appendChild(b);
}
}
});
inp.addEventListener("keydown", function(e) {
var x = document.getElementById(this.id + "autocomplete-list");
if (x) x = x.getElementsByTagName("div");
if (e.keyCode == 40) {
currentFocus++;
addActive(x);
} else if (e.keyCode == 38) { //up
currentFocus--;
addActive(x);
} else if (e.keyCode == 13) {
e.preventDefault();
if (currentFocus > -1) {
if (x) x[currentFocus].click();
}
}
});
function addActive(x) {
if (!x) return false;
removeActive(x);
if (currentFocus >= x.length) currentFocus = 0;
if (currentFocus < 0) currentFocus = (x.length - 1);
x[currentFocus].classList.add("autocomplete-active");
}
function removeActive(x) {
for (var i = 0; i < x.length; i++) {
x[i].classList.remove("autocomplete-active");
}
}
function closeAllLists(elmnt) {
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]);
}
}
}
document.addEventListener("click", function (e) {
closeAllLists(e.target);
});
}
autocomplete(document.getElementById("myInput"), countries);