[英]Unable to find rich autocomplete id during input validation with jQuery
[英]jQuery Autocomplete with input validation frozen
我用類似SO的標簽創建了一個自動完成功能。
它從我的數據庫中獲取數據,並將數據作為逗號分隔的標簽插入到表單字段中。
eg. PHP, JS, SO, Laravel
我希望它在第四個逗號后停止,因此用戶最多可以輸入4個標簽。
不幸的是有一個問題。 輸入字段在第四個標簽之后凍結。 用戶無法刪除或編輯標簽。
我不知道問題是什么。
<script>
$(function() {
function split( val ) {
return val.split( /,\s*/ );
}
function extractLast( term ) {
return split( term ).pop();
}
$( "#themeti" )
.keypress(function (e) {
var input = $(this).val()+String.fromCharCode(e.which);
if (input.split(',').length > 4) {
e.preventDefault();
}
})
.autocomplete({
source: function( request, response ) {
$.getJSON( "../../assets/php/themedata.php", {
term: extractLast( request.term )
}, response );
},
search: function() {
// custom minLength
var term = extractLast( this.value );
if ( term.length < 2 ) {
return false;
}
},
focus: function() {
// prevent value inserted on focus
return false;
},
select: function( event, ui ) {
var terms = split( this.value );
// remove the current input
terms.pop();
// add the selected item
terms.push( ui.item.value );
// add placeholder to get the comma-and-space at the end
terms.push( "" );
this.value = terms.join( ", " );
return false;
}
});
});
您錯過了String.fromCharCode(e.which)
這個
var input = $(this).val();
應該
var input = $(this).val()+String.fromCharCode(e.which);
這就是我最終要做的
$( "#themeti" )
// don't navigate away from the field on tab when selecting an item
.bind( "keydown", function( event ) {
if ( event.keyCode === $.ui.keyCode.TAB &&
$( this ).data( "autocomplete" ).menu.active ) {
event.preventDefault();
}
})
.autocomplete({
source: function( request, response ) {
$.getJSON( "../../assets/php/themedata.php", {
term: extractLast( request.term )
}, response );
},
search: function() {
// custom minLength
var term = extractLast( this.value );
if ( term.length < 2 ) {
return false;
}
},
focus: function() {
// prevent value inserted on focus
return false;
},
select: function( event, ui ) {
var terms = split( this.value );
if(terms.length <= 4) {
// remove the current input
terms.pop();
// add the selected item
terms.push( ui.item.value );
// add placeholder to get the comma-and-space at the end
terms.push( "" );
this.value = terms.join( ", " );
return false;
} else {
var last = terms.pop();
$(this).val(this.value.substr(0, this.value.length - last.length - 2)); // removes text from input
$(this).effect("highlight", {}, 1000);
$(this).addClass("red");
$("#warnings").html("<span style='color:red;'>Max people reached</span>");
return false;
}
}
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