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1.1.0
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@cyfung1031
cyfung1031 committed Oct 6, 2023
1 parent eda3201 commit 324a927
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2 changes: 1 addition & 1 deletion auto-complete.css
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Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@
text-align: left; cursor: default; border: 1px solid #ccc; border-top: 0; background: #fff; box-shadow: -1px 1px 3px rgba(0,0,0,.1);

/* core styles should not be changed */
position: absolute; display: none; z-index: 9999; max-height: 254px; overflow: hidden; overflow-y: auto; box-sizing: border-box;
position: absolute; /*display: none;*/ z-index: 9999; max-height: 254px; overflow: hidden; overflow-y: auto; box-sizing: border-box;
}
.autocomplete-suggestion { position: relative; padding: 0 .6em; line-height: 23px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; font-size: 1.02em; color: #333; }
.autocomplete-suggestion b { font-weight: normal; color: #1f8dd6; }
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218 changes: 129 additions & 89 deletions auto-complete.js
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Original file line number Diff line number Diff line change
@@ -1,31 +1,23 @@
/*
JavaScript autoComplete v1.0.4
JavaScript autoComplete v1.1.0
Copyright (c) 2014 Simon Steinberger / Pixabay
GitHub: https://github.com/Pixabay/JavaScript-autoComplete
License: http://www.opensource.org/licenses/mit-license.php
*/

// Chrome 38+, Edge 13+, Safari 8+, Firefox 26+, Opera 25+, all mobile browsers

var autoComplete = (function(){
// "use strict";
function autoComplete(options){
if (!document.querySelector) return;

// helpers
function hasClass(el, className){ return el.classList ? el.classList.contains(className) : new RegExp('\\b'+ className+'\\b').test(el.className); }

function addEvent(el, type, handler){
if (el.attachEvent) el.attachEvent('on'+type, handler); else el.addEventListener(type, handler);
}
function removeEvent(el, type, handler){
// if (el.removeEventListener) not working in IE11
if (el.detachEvent) el.detachEvent('on'+type, handler); else el.removeEventListener(type, handler);
}
function live(elClass, event, cb, context){
addEvent(context || document, event, function(e){
var found, el = e.target || e.srcElement;
while (el && !(found = hasClass(el, elClass))) el = el.parentElement;
if (found) cb.call(el, e);
});
(context || document).addEventListener(event, function(e){
for (var t = e.target || e.srcElement; t; t = t.parentElement)
t.classList.contains(elClass) && (cb.call(t, e), t = 1);
}, true);
}

var o = {
Expand All @@ -37,31 +29,56 @@ var autoComplete = (function(){
offsetTop: 1,
cache: 1,
menuClass: '',
renderItem: function (item, search){
renderItem: function(item, search){
// escape special characters
search = search.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
var re = new RegExp("(" + search.split(' ').join('|') + ")", "gi");
return '<div class="autocomplete-suggestion" data-val="' + item + '">' + item.replace(re, "<b>$1</b>") + '</div>';
var si = document.createElement('div');
si.className = 'autocomplete-suggestion';
si.setAttribute('data-val', item); // see PR#86
try{
search = search.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
si.innerHTML = item.replace(new RegExp("(" + search.split(' ').join('|') + ")", "gi"), "<b>$1</b>");
}catch(e){
si.textContent = item;
}
return si;
},
renderItems: function (data, search, that){
var tp = document.createElement('template');
var df = tp.content;
for (var i=0;i<data.length;i++){
var item = data[i];
var si = o.renderItem(item, search);
if (typeof si === 'string') tp.innerHTML += si;
else if (si && si.nodeType === 1) df.appendChild(si);
}
var _sc = that.sc;
var firstChild;
while (firstChild = _sc.firstChild) {
firstChild.remove();
}
_sc.appendChild(df);
},
onSelect: function(e, term, item){}
};
for (var k in options) { if (options.hasOwnProperty(k)) o[k] = options[k]; }

// init
var elems = typeof o.selector == 'object' ? [o.selector] : document.querySelectorAll(o.selector);
for (var i=0; i<elems.length; i++) {
var that = elems[i];
var forEach = function (that) {

that._currentRequestId = 0;
// create suggestions container "sc"
that.sc = document.createElement('div');
that.sc.className = 'autocomplete-suggestions '+o.menuClass;
that.sc.style.display = 'none';

that.autocompleteAttr = that.getAttribute('autocomplete');
that.setAttribute('autocomplete', 'off');
that.cache = {};
that.cache = new Map(); // changed from {} to Map; related to PR#37 PR#38
that.last_val = '';

that.updateSC = function(resize, next){
that.updateSC = function(resize, next){ // see issue mentioned in PR#49
if(that != document.activeElement) return; // issue#51 PR#52
var rect = that.getBoundingClientRect();
that.sc.style.left = Math.round(rect.left + (window.pageXOffset || document.documentElement.scrollLeft) + o.offsetLeft) + 'px';
that.sc.style.top = Math.round(rect.bottom + (window.pageYOffset || document.documentElement.scrollTop) + o.offsetTop) + 'px';
Expand All @@ -74,34 +91,34 @@ var autoComplete = (function(){
if (!next) that.sc.scrollTop = 0;
else {
var scrTop = that.sc.scrollTop, selTop = next.getBoundingClientRect().top - that.sc.getBoundingClientRect().top;
if (selTop + that.sc.suggestionHeight - that.sc.maxHeight > 0)
if (selTop + that.sc.suggestionHeight - that.sc.maxHeight > 0) {
that.sc.scrollTop = selTop + that.sc.suggestionHeight + scrTop - that.sc.maxHeight;
else if (selTop < 0)
} else if (selTop < 0){
that.sc.scrollTop = selTop + scrTop;
}
}
}
}
addEvent(window, 'resize', that.updateSC);
};
window.addEventListener('resize', that.updateSC);
document.body.appendChild(that.sc);

live('autocomplete-suggestion', 'mouseleave', function(e){
that.sc.addEventListener('mouseleave', function(e){
var sel = that.sc.querySelector('.autocomplete-suggestion.selected');
if (sel) setTimeout(function(){ sel.className = sel.className.replace('selected', ''); }, 20);
}, that.sc);
if (sel) setTimeout(function(){ sel.classList.remove('selected'); }, 20);
});

live('autocomplete-suggestion', 'mouseover', function(e){
live('autocomplete-suggestion', 'mouseenter', function(e){
var sel = that.sc.querySelector('.autocomplete-suggestion.selected');
if (sel) sel.className = sel.className.replace('selected', '');
this.className += ' selected';
if (sel) sel.classList.remove('selected');
this.classList.add('selected');
}, that.sc);

live('autocomplete-suggestion', 'mousedown', function(e){
if (hasClass(this, 'autocomplete-suggestion')) { // else outside click
var v = this.getAttribute('data-val');
that.value = v;
o.onSelect(e, v, this);
that.sc.style.display = 'none';
}
e.stopPropagation();
var v = this.getAttribute('data-val');
that.value = v;
o.onSelect(e, v, this);
that.sc.style.display = 'none';
}, that.sc);

that.blurHandler = function(){
Expand All @@ -112,38 +129,42 @@ var autoComplete = (function(){
setTimeout(function(){ that.sc.style.display = 'none'; }, 350); // hide suggestions on fast input
} else if (that !== document.activeElement) setTimeout(function(){ that.focus(); }, 20);
};
addEvent(that, 'blur', that.blurHandler);

var suggest = function(data){
var val = that.value;
that.cache[val] = data;
if (data.length && val.length >= o.minChars) {
var s = '';
for (var i=0;i<data.length;i++) s += o.renderItem(data[i], val);
that.sc.innerHTML = s;
that.addEventListener('blur', that.blurHandler);

var suggest = function(data, val){
val = val || that.value; // PR#28
that.cache.set(val, data);
that.triggerSC(data, val, val.length >= o.minChars);
};

// PR#40
// Optional method to trigger results programatically
that.triggerSC = function(data, val, b){
if (data.length && b!==false) {
o.renderItems(data, (val || ''), that);
that.updateSC(0);
}
else
} else {
that.sc.style.display = 'none';
}
}
};

that.keydownHandler = function(e){
var key = window.event ? e.keyCode : e.which;
// down (40), up (38)
if ((key == 40 || key == 38) && that.sc.innerHTML) {
var next, sel = that.sc.querySelector('.autocomplete-suggestion.selected');
if (!sel) {
next = (key == 40) ? that.sc.querySelector('.autocomplete-suggestion') : that.sc.childNodes[that.sc.childNodes.length - 1]; // first : last
next.className += ' selected';
that.value = next.getAttribute('data-val');
next = (key == 40) ? that.sc.querySelector('.autocomplete-suggestion') : that.sc.lastChild; // first : last
} else {
sel.classList.remove('selected');
next = (key == 40) ? sel.nextSibling : sel.previousSibling;
if (next) {
sel.className = sel.className.replace('selected', '');
next.className += ' selected';
that.value = next.getAttribute('data-val');
}
else { sel.className = sel.className.replace('selected', ''); that.value = that.last_val; next = 0; }
}
if (next) {
next.classList.add('selected');
that.value = next.getAttribute('data-val');
} else {
that.value = that.last_val;
next = 0;
}
that.updateSC(0, next);
return false;
Expand All @@ -152,11 +173,17 @@ var autoComplete = (function(){
else if (key == 27) { that.value = that.last_val; that.sc.style.display = 'none'; }
// enter
else if (key == 13 || key == 9) {
var sel = that.sc.querySelector('.autocomplete-suggestion.selected');
if (sel && that.sc.style.display != 'none') { o.onSelect(e, sel.getAttribute('data-val'), sel); setTimeout(function(){ that.sc.style.display = 'none'; }, 20); }
var tsc = that.sc;
var isVisible = tsc.style.display != 'none';
var sel = tsc.querySelector('.autocomplete-suggestion.selected');
if (sel && isVisible) {
o.onSelect(e, sel.getAttribute('data-val'), sel);
setTimeout(function(){ tsc.style.display = 'none'; }, 20);
}
if(isVisible) e.preventDefault(); // PR#8
}
};
addEvent(that, 'keydown', that.keydownHandler);
that.addEventListener('keydown', that.keydownHandler);

that.keyupHandler = function(e){
var key = window.event ? e.keyCode : e.which;
Expand All @@ -167,56 +194,69 @@ var autoComplete = (function(){
that.last_val = val;
clearTimeout(that.timer);
if (o.cache) {
if (val in that.cache) { suggest(that.cache[val]); return; }
var c = that.cache;
if (c.has(val)) { suggest(c.get(val)); return; }
// no requests if previous suggestions were empty
for (var i=1; i<val.length-o.minChars; i++) {
var part = val.slice(0, val.length-i);
if (part in that.cache && !that.cache[part].length) { suggest([]); return; }
var k = o.minChars;
for (var j=val.length-1; j>=k; j--) {
var part = val.slice(0, j);
if (c.has(part) && !c.get(part).length) { suggest([]); return; }
}
}
that.timer = setTimeout(function(){ o.source(val, suggest) }, o.delay);
// PR#5
that.timer = setTimeout(function(){
var val = that.value;
var thisRequestId = ++that._currentRequestId;
o.source(val, function (data, val){
if (thisRequestId === that._currentRequestId) return suggest(data, val);
});
}, o.delay);
}
} else {
that.last_val = val;
that.sc.style.display = 'none';
}
}
};
addEvent(that, 'keyup', that.keyupHandler);
that.addEventListener('keyup', that.keyupHandler);

that.focusHandler = function(e){
that.last_val = '\n';
that.keyupHandler(e)
};
if (!o.minChars) addEvent(that, 'focus', that.focusHandler);
if (!o.minChars) that.addEventListener('focus', that.focusHandler);
}
for (var i=0; i<elems.length; i++) {
forEach(elems[i]);
}

// public destroy method
this.destroy = function(){
for (var i=0; i<elems.length; i++) {
var that = elems[i];
removeEvent(window, 'resize', that.updateSC);
removeEvent(that, 'blur', that.blurHandler);
removeEvent(that, 'focus', that.focusHandler);
removeEvent(that, 'keydown', that.keydownHandler);
removeEvent(that, 'keyup', that.keyupHandler);
if (that.autocompleteAttr)
that.setAttribute('autocomplete', that.autocompleteAttr);
else
that.removeAttribute('autocomplete');
document.body.removeChild(that.sc);
that = null;
var elems = this.elems;
if (elems) {
this.elems = null;
for (var i=0; i<elems.length; i++) {
var that = elems[i];
window.removeEventListener('resize', that.updateSC);
that.removeEventListener('blur', that.blurHandler);
that.removeEventListener('focus', that.focusHandler);
that.removeEventListener('keydown', that.keydownHandler);
that.removeEventListener('keyup', that.keyupHandler);
if (typeof that.autocompleteAttr == 'string') that.setAttribute('autocomplete', that.autocompleteAttr);
else that.removeAttribute('autocomplete');
that.sc && that.sc.remove(); // issue#92 PR#93
that = null;
}
}
};

this.elems = elems; // PR#40
}
return autoComplete;
})();

(function(){
if (typeof define === 'function' && define.amd)
define('autoComplete', function () { return autoComplete; });
else if (typeof module !== 'undefined' && module.exports)
module.exports = autoComplete;
else
window.autoComplete = autoComplete;
if (typeof define === 'function' && define.amd) define('autoComplete', function () { return autoComplete; });
else if (typeof module !== 'undefined' && module.exports) module.exports = autoComplete;
else window.autoComplete = autoComplete;
})();
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