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How to Prevent Spaces to Be Counted as Characters? - javascript

I've got a search box and works quite good actually. What it does is that you type something and if it already exists, it shows you the topic. If not, it sends you to page that you can open this topic. When you type "ABC" or "A BC", it's okay but when you try to type "AB" and then try to search, it gives you an error that you need to type at least 3 characters, which is good. But it can be easily done like ("a space space" - counts 3). You may open topics with spaces, sure, but don't want that spaces to be counted. Such as, (hello world) It should be counted as 10 characters, not 11. How to exclude spaces to be counted as characters? It's a project I'm working on to make it better, I have not written all by myself.
Here are my search box's all javascript files which I probably need to edit but don't know how:
<script type="text/javascript">
function formatText(tag) {
var Field = document.getElementById('entry_girdi');
var val = Field.value;
var selected_txt = val.substring(Field.selectionStart, Field.selectionEnd);
var before_txt = val.substring(0, Field.selectionStart);
var after_txt = val.substring(Field.selectionEnd, val.length);
Field.value += '[' + tag + '/]';
}
</script>
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RegExp("^(?:"+d+")(.*$)","i"),f=e.exec(h),this.inputView.setHintValue(a+(f?f[1]:"")))},_clearHint:function(){this.inputView.setHintValue("")},_clearSuggestions:function(){this.dropdownView.clearSuggestions()},_setInputValueToQuery:function(){this.inputView.setInputValue(this.inputView.getQuery())},_setInputValueToSuggestionUnderCursor:function(a){var b=a.data;this.inputView.setInputValue(b.value,!0)},_openDropdown:function(){this.dropdownView.open()},_closeDropdown:function(a){this.dropdownView["blured"===a.type?"closeUnlessMouseIsOverDropdown":"close"]()},_moveDropdownCursor:function(a){var b=a.data;b.shiftKey||b.ctrlKey||b.metaKey||this.dropdownView["upKeyed"===a.type?"moveCursorUp":"moveCursorDown"]()},_handleSelection:function(a){var b="suggestionSelected"===a.type,d=b?a.data:this.dropdownView.getSuggestionUnderCursor();d&&(this.inputView.setInputValue(d.value),b?this.inputView.focus():a.data.preventDefault(),b&&c.isMsie()?c.defer(this.dropdownView.close):this.dropdownView.close(),this.eventBus.trigger("selected",d.datum,d.dataset))},_getSuggestions:function(){var a=this,b=this.inputView.getQuery();c.isBlankString(b)||c.each(this.datasets,function(c,d){d.getSuggestions(b,function(c){b===a.inputView.getQuery()&&a.dropdownView.renderSuggestions(d,c)})})},_autocomplete:function(a){var b,c,d,e,f;("rightKeyed"!==a.type&&"leftKeyed"!==a.type||(b=this.inputView.isCursorAtEnd(),c="ltr"===this.inputView.getLanguageDirection()?"leftKeyed"===a.type:"rightKeyed"===a.type,b&&!c))&&(d=this.inputView.getQuery(),e=this.inputView.getHintValue(),""!==e&&d!==e&&(f=this.dropdownView.getFirstSuggestion(),this.inputView.setInputValue(f.value),this.eventBus.trigger("autocompleted",f.datum,f.dataset)))},_propagateEvent:function(a){this.eventBus.trigger(a.type)},destroy:function(){this.inputView.destroy(),this.dropdownView.destroy(),f(this.$node),this.$node=null},setQuery:function(a){this.inputView.setQuery(a),this.inputView.setInputValue(a),this._clearHint(),this._clearSuggestions(),this._getSuggestions()}}),b}();!function(){var b,d={},f="ttView";b={initialize:function(b){function g(){var b,d=a(this),g=new e({el:d});b=c.map(h,function(a){return a.initialize()}),d.data(f,new l({input:d,eventBus:g=new e({el:d}),datasets:h})),a.when.apply(a,b).always(function(){c.defer(function(){g.trigger("initialized")})})}var h;return b=c.isArray(b)?b:[b],0===b.length&&a.error("no datasets provided"),h=c.map(b,function(a){var b=d[a.name]?d[a.name]:new i(a);return a.name&&(d[a.name]=b),b}),this.each(g)},destroy:function(){function b(){var b=a(this),c=b.data(f);c&&(c.destroy(),b.removeData(f))}return this.each(b)},setQuery:function(b){function c(){var c=a(this).data(f);c&&c.setQuery(b)}return this.each(c)}},jQuery.fn.typeahead=function(a){return b[a]?b[a].apply(this,[].slice.call(arguments,1)):b.initialize.apply(this,arguments)}}()}(window.jQuery);
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script src="/typeahead.min.js"></script>
<script>
$(document).ready(function(){
$('input.typeahead').typeahead({
name: 'typeahead',
remote:'/search.php?key=%QUERY',
limit : 10
});
});
</script>
<script type="text/javascript">
$(document).ready(function () {
//Disable part of page
$('input#ara').bind('cut copy paste', function (e) {
e.preventDefault();
});
});
</script>
<script type="text/javascript">
function numbersonly(myfield, e, dec) {
var key;
var keychar;
if (window.event)
key = window.event.keyCode;
else if (e)
key = e.which;
else
return true;
keychar = String.fromCharCode(key);
// control keys
if ((key == null) || (key == 0) || (key == 8) ||
(key == 9) || (key == 13) || (key == 27))
return true;
// numbers
else if ((("ABCÇDEFGĞHIİJKLMNOÖPQRSŞTUÜVWXYZabcçdefgğhıijklmnoöpqrsştuüvwxyz0123456789").indexOf(keychar) > -1))
return true;
// decimal point jump
else if (dec && (keychar == ".")) {
myfield.form.elements[dec].focus();
return false;
}
else
return false;
}
</script>
My another topic has been marked as duplicate but to be honest, I don't really know how to adapt these suggested lines to my js codes to get it working properly.
var myString = getElementById("input").value;
var withoutSpace = myString.replace(/ /g,"");
var length = withoutSpace.length;

You just take the value, in your case val, and strip out the spaces.
Change this line:
var val = Field.value;
To:
var val = Field.value.replace(/\s/g, '');
I have changed the regex from the solution you've posted with \s, which matches all kinds of space, not just the whitespace character.

You could count all the caracters, including spaces, with this:
var val = Field.value;
var chars = val.length;
Then you can count how many spaces do you have:
var spacesArr = val.split(" ");
var spaces = spacesArr.length;
Finally, if you substract the values, you have the actual characters count:
var actualLength = chars - spaces;

Related

I have a text field, which will accept only the following characters:
Allowed characters: [a-z 0-9 + # - .]
This is the same filter SO does in the 'Tags' field, when you're asking a question.
If the user types an invalid character, i want the current text field value to remain unchanged. I tried:
$('#post_tags').keypress(function(event){
var char = String.fromCharCode(event.which)
var txt = $(this).val()
if (! txt.match(/[^A-Za-z0-9+#-\.]/)){
$(this).val(txt.replace(char, ''));
}
})
Why it doesn't work? Thanks!

This worked for me:
$(function(){
$('#t').keypress(function(e){
var txt = String.fromCharCode(e.which);
console.log(txt + ' : ' + e.which);
if(!txt.match(/[A-Za-z0-9+#.]/))
{
return false;
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input id="t" />

/[^A-Za-z0-9+#-\.]/
This negates the match of any one of those characters. To make it match more than one character, you have to use a + in there:
/[^A-Za-z0-9+#-\.]+/
^
And now to match the whole string, you need to add anchors:
/^[^A-Za-z0-9+#-\.]+$/
^ ^
EDIT: Okay, it seems that the - here is also creating a range from character # to .. In this case, you can either escape it, or put it at the end:
/^[^A-Za-z0-9+#\-\.]+$/
/^[^A-Za-z0-9+#\.-]+$/

You don't need to replace the char, only prevent it.
var char = String.fromCharCode(event.which)
if (!char.match(/^[^A-Za-z0-9+#\.\-]+$/)) event.preventDefault();

Alternate Solution
One thing that might help would be to use the .which field instead. Then simply return false when it doesn't fit. I actually have a huge object full of .which info for all major browsers. It includes arrays you could borrow from it to create something like:
var alphaNumericNcontrols = [ 8,9,13,16,17,18,19,20,32,33,34,35,36,37,38,39,40,44,45,46,145,48,49,50,51,52,53,54,55,56,57,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,96,97,98,99,100,101,102,103,104,105 ],
illegal = {
reg: [ 106,111,191,220 ],
shift: [ 56,59,188,190,191,220,222 ]
}
$(document).on("keydown", "input[type=text]", function(e) {
var eKey = e.which || e.keyCode;
if (alphaNumericNcontrols.indexOf(eKey) === -1) return false;
if (illegal.reg.indexOf(eKey) > -1) return false;
if (e.shiftKey && illegal.shift.indexOf(eKey) > -1) return false;
});
See Working Example Here
Keep in mind my Object is not perfect and there are some updates I probably need to make to it, but i did my best to establish everything from every possible major browser!

Thanks everyone.
Actually my problem was a little more difficult: filter invalid keys and start a ajax call for valid ones, in 2 different ways: if the user press SPACE/COMMA or while he/her still typing. Here's the code:
$(document).ready(function(){
$('#post_tags').keypress(function(e){
var txt = String.fromCharCode(e.which);
console.log(txt + ' : ' + e.which);
if(txt.match(/^[^A-Za-z0-9+#\-\.]+$/))
{
return false;
}
})
$('#post_tags').keyup(function(event){
code = event.which
var token = String.fromCharCode(code)
var txt = $(this).val()
//create a new tag, take it out of textfield
if (code == 32 || code == 188)
{
console.log("AJAX new word keyup")
$.ajax({
type: 'get',
url: '/posts/tags_change',
dataType: "json",
data: "query=" + $(this).val(),
success: function(data) {
console.log(data)
$('#post_tags').val('')
},
error: function(data) {
alert("Ajax error")
}
});
}
else
{
//do autocomplete ajax
console.log("typing:" + txt)
}
});
})
Dont' know if this is 100% right!

I'm trying to implement a highlighting feature for a livesearch.
What I do is, send an ajax request with an token the user looks for. I receive an html text containing a table.
So I thought I could use a simple regex, looking for the users token and then surround it with a span, but I am receiving some longfilled <a> - Tags, so chances are good that the user types something and I break my HTML by replacing something inside a tag.
So how can I exclude html tags in my search?
Oh I'm using javascript regexp.

You would need to load jQuery highlight plugin and then you can just do something like this:
var words = "keyword1,keyword2,keyword3";
var keywords = words.split(',');
for(var i = 0; i < keywords.length; i++) {
$(selector).highlight($.trim(keywords[i]));
}
If you wanna do highlighting in the entire page, then replace selector with 'body', otherwise use selector for desired element.

//These results to be highlighted
var results = [];
results[0] = 'jquery';
results[1] = 'json';
results[2] = 'Java Script';
results[3] = 'java';
results[4] = 'java Update';
results[5] = 'javelin';
results[6] = 'James';
results[7] = 'jacob';
results[8] = 'Jail';
results[9] = 'Jailor';
jQuery(document).ready(function(){
//Search the results
jQuery('#search').live('keyup', function(event){
var term = jQuery(this).val();//keyword to be matched
var htm = '';
//Keys with codes 40 and below are special (enter, arrow keys, escape, etc.), Key code 8 is backspace.
if(event.keyCode > 40 || event.keyCode <91 || event.keyCode == 8 ||
event.keyCode == 20 || event.keyCode == 16 || event.keyCode == 9 ||
event.keyCode == 37 || event.keyCode == 38 || event.keyCode == 39 ||
event.keyCode == 40) {
for(x in results){
var match = results[x];
if(match.toLowerCase().indexOf(term.toLowerCase()) != -1){
var o = '<b><u>'+term+'</u></b>';
var a = match.replace(term, o);
htm += '<li>'+a+'</li>';
}
}
//create a orderd list for the matched results
var output = '<ol>' + htm + '</ol>';
if (htm.length > 0) {
jQuery('#result').show().append(output);
}
}
});
});
The complete tutorial can be found here: http://www.webspeaks.in/2012/09/live-text-search-highlight-using.html

Not sure how well the jQuery plugin works, here is the script I came up with but doesn't highlight text over multiple tags.
If I want to highlight "my script" and the html looks like "my script" then it would not be highlighted. Still working on that part.
Here is the script so far:
str='<img src="brown fox.jpg" title="The brown fox" />'
+'<p>some text containing fox. And onother fox.</p>'
var word="fox";
word="(\\b"+
word.replace(/([{}()[\]\\.?*+^$|=!:~-])/g, "\\$1")
+ "\\b)";
var r = new RegExp(word,"igm")
str.replace(/(>[^<]+)/igm,function(a){
return a.replace(r,"<span class='hl'>$1</span>");
})

Why is my code picking up the following error?
Line 32, Column 14: character "<" is the first character of a delimiter but occurred as data
for(i=0; i <= length; i++) {
This message may appear in several cases:
You tried to include the "<" character in your page: you should escape it as "<"
You used an unescaped ampersand "&": this may be valid in some contexts, but it is recommended to use "&", which is always safe.
Another possibility is that you forgot to close quotes in a previous tag.
Line 32, Column 14: StartTag: invalid element name
for(i=0; i <= length; i++) {
Code:
<script type="javascript">
function randomRange(minVal,maxVal)
{
var randVal = minVal+(Math.random()*(maxVal-minVal));
return (Math.floor(randVal));
}
function GetCaptcha() {
var encStr = "123456789ABCDEFGHJKMNPQRSTUVWXYZ";
var length = randomRange(4,8);
var result = "";
var i = "";
var char = "";
for(i=0; i <= length; i++) {
char = encStr.substr(randomRange(1,encStr.length),1);
result += char;
}
return result;
}
function InitCaptcha() {
var hidFld = document.MyForm.captchaHidFld;
str = GetCaptcha();
hidFld.value = str;
document.getElementById('captchaTxt').innerHTML = str;
document.getElementById('captchaBtn').value = str;
}
function ValidateCaptcha (theForm) {
var inpStr = (document.MyForm.captchaInpFld.value).toUpperCase();
var captStr = document.MyForm.captchaHidFld.value;
if (inpStr.length == captStr.length)
{
if (inpStr.match(captStr)) { return true; }
}
return false;
}
function cmdSubmit(theForm)
{
if (!ValidateCaptcha(theForm))
{
alert ("Please enter valid CAPTCHA Code.");
return false;
}
if (theForm.name.value == "")
{
alert ("Please enter your name.");
theForm.name.focus();
return false;
}
if (theForm.email.value == "")
{
alert ("Please enter your e-mail address.");
theForm.email.focus();
return false;
}
return true;
}
</script>

With that transitional XHTML DOCTYPE you'll need to enclose inline Javascript and CSS like this:
<script type="text/javascript">
//<![CDATA[
/* script here */
//]]>
</script>
Compare these results:
this is invalid
this validates

What are you using to validate this? You could always include the javascript as an external javascript file to get around this?
Also: Make sure the script tag is inside a <head> or <body> element?

Your code looks correct. If you bebug the code partially, i.e. GetCaptcha() using firebug, you will be able to track the error quickly.
or Post the HTML related to this code :)

Hi i need to strip all spaces and newlines from a string in javascript... This is what i use and it doesn't work...
<script language="JavaScript" type="text/javascript">
<!--
var isShift=null;
var isNN = (navigator.appName.indexOf("Netscape")!=-1);
var OP = (navigator.appName.indexOf("Opera")!=-1);
if(OP)isNN=true;
var key;
function shift(event){
key = (isNN) ? event.which : event.keyCode;
if (key==16)isShift=1;
}
function process(event){
key = (isNN) ? event.which : event.keyCode;
if(document.layers&&event.modifiers==4){
isShift=1;
}
if (key==13&&isShift!=1){
var chatmsg = $("#chatmsg");
var cmessage = chatmsg.val();
cmessage = cmessage.replace(/\s/g, '');
if(cmessage=="")
{
document.myForm.chatmsg.value = "";
return false;
}
else
{
sendMsg();
}
}
if (key!=16)isShift=null;
}
//-->
function sendMsg(){
var chatmsg = $("#chatmsg");
$.post("sendchat.php",{ chatmsg: chatmsg.val()} ,
function(data)
{
$("#msgtousr").html(data).show();
$("#msgtousr").html(data).fadeOut(2000);
document.myForm.chatmsg.value = "";
});
}
</script>
<form name='myForm' method='POST' style='margin:0px'>
<textarea name='chatmsg' onkeypress='return process(event)' onkeydown='shift(event)' style='width:278px;height:70px;border:2px solid white;background-color:turquoise;color:blue' id='chatmsg'></textarea>
</form>
This is my chat if it has an error checking if the user typed something in in the javascript i suspect the replace function to misbehave

You want to strip all spaces and newlines? Only one regex is necessary:
cmessage = cmessage.replace(/\s/g, '');

Try...
cmessage = cmessage.replace(/\s/g, '');
\s in this case stands for "all white space" which includes spaces and newline characters.
Reference

I have file with jspx extension i write javascript like
function isNumber(inputId){
var value = document.getElementById('mainForm:'+ inputId).value;
var s = value.length;
while(s >= 0){
var c = value.charAt(s);
if(c > "9"){
alert("Value must be digit");
document.getElementById('mainForm:'+ inputId).value = "";
document.getElementById('mainForm:'+ inputId).focus();
return false;
}
s --;
}
return true;
}
that work perfect but when i check if condition like if(c > "9" || c < "0") it will gives error like
com.sun.facelets.FaceletException: Error Parsing /WEB-INF/includes/templates/cc-classic-template.jspx: Error Traced[line: 386] The content of elements must consist of well-formed character data or markup.
After long observation i found that <(less than) sign will create problem.
Is JSF not support < sign ?

Enclose your Javascript in CDATA Sections:
<script language="javascript" type="text/javascript">
/* <![CDATA[ */
function isNumber(inputId){
var value = document.getElementById('mainForm:'+ inputId).value;
var s = value.length;
while(s >= 0){
var c = value.charAt(s);
if(c > "9"){
alert("Value must be digit");
document.getElementById('mainForm:'+ inputId).value = "";
document.getElementById('mainForm:'+ inputId).focus();
return false;
}
s --;
}
return true;
}
//Code containing "<" also comes in this section
/* ]]> */
</script>

As explained by Matt Handy, you could not use the < or > sign in your JSPX, as this is a XML format. You have three solutions regarding your problem:
Escape by using < or >.
Use <![CDATA[ ... ]]> to hold your JavaScript code in your page.
Set your JavaScript code in a separate .js file, and load it in your JSPX page.

Besides the escaping and CDATA answers:
If you want to check if a value is a number, there is a javascript built-in function for that: isNaN
Here is an example:
if (isNaN(document.getElementById('mainForm:'+ inputId).value))
{
alert("Please enter digits");
document.getElementById(obj).focus();
document.getElementById(obj).select();
return false;
}