这是一个更清晰的例子。
- 它基于Materialized.js原始功能
- 在您键入时取消现有的 ajax 请求,这样您就不会得到重复的结果
- 如果删除“timeout”注释行,则只会在按键后经过“x”时间后调用 ajax 调用。当您快速打字以避免每次按键时调用 ajax(即使它们被取消)时,这可能很有用。
见下文:
initAutoComplete({inputId:'autocomplete-input',ajaxUrl:'/search/my-auto-complete-results'})
function initAutoComplete(options)
{
var defaults = {
inputId:null,
ajaxUrl:false,
data: {}
};
options = $.extend(defaults, options);
var $input = $("#"+options.inputId);
if (options.ajaxUrl !== false)
{
var $autocomplete = $('<ul id="myId" class="autocomplete-content dropdown-content"></ul>'),
$inputDiv = $input.closest('.input-field'),
//timeout,
runningRequest = false,
request;
if ($inputDiv.length) {
$inputDiv.append($autocomplete); // Set ul in body
} else {
$input.after($autocomplete);
}
var highlight = function(string, $el) {
var img = $el.find('img');
var matchStart = $el.text().toLowerCase().indexOf("" + string.toLowerCase() + ""),
matchEnd = matchStart + string.length - 1,
beforeMatch = $el.text().slice(0, matchStart),
matchText = $el.text().slice(matchStart, matchEnd + 1),
afterMatch = $el.text().slice(matchEnd + 1);
$el.html("<span>" + beforeMatch + "<span class='highlight'>" + matchText + "</span>" + afterMatch + "</span>");
if (img.length) {
$el.prepend(img);
}
};
$autocomplete.on('click', 'li', function () {
$input.val($(this).text().trim());
$autocomplete.empty();
});
$input.on('keyup', function (e) {
//if(timeout){ clearTimeout(timeout);}
if(runningRequest) request.abort();
if (e.which === 13) {
$autocomplete.find('li').first().click();
return;
}
var val = $input.val().toLowerCase();
$autocomplete.empty();
//timeout = setTimeout(function() {
runningRequest=true;
request = $.ajax({
type: 'GET', // your request type
url: options.ajaxUrl,
success: function (data) {
if (!$.isEmptyObject(data)) {
// Check if the input isn't empty
if (val !== '') {
for(var key in data) {
if (data.hasOwnProperty(key) &&
key.toLowerCase().indexOf(val) !== -1 &&
key.toLowerCase() !== val) {
var autocompleteOption = $('<li></li>');
if(!!data[key]) {
autocompleteOption.append('<img src="'+ data[key] +'" class="right circle"><span>'+ key +'</span>');
} else {
autocompleteOption.append('<span>'+ key +'</span>');
}
$autocomplete.append(autocompleteOption);
highlight(val, autocompleteOption);
}
}
}
}
},
complete:function(){
runningRequest = false;
}
});
//},250);
});
}
else
{
$input.autocomplete({
data: options.data
});
}
}