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How to check entered value is exist or not using Jquery or javascript

I have one textbox and one button and on button I have written below code. problem is suppose first I have entered in textbox 10 than its worked but when another time I enter 10 than also it prints value is not in array. so pls help me whats the issue...
jQuery(document).ready(function()
{
jQuery("#mybutton").live('click',function ()
{
var sel_fam_rel=jQuery("#my_textbox").val();
var ids = [];
code =sel_fam_rel;
if($.inArray(code,ids) >= 0)
{
alert("Value is in array");
}
else
{
alert("Value is not in array");
ids.push(code);
}
});
});

This line:
if($.inArray(code,ids) >= 0)
should be changed to:
if($.inArray(code,ids) != -1)
and put your ids var outside of click.
Try the snippet below.
var ids = [];
jQuery("button").on('click', function() {
var sel_fam_rel = jQuery("#my_textbox").val();
code = sel_fam_rel;
if ($.inArray(code, ids) != -1) {
alert("Value is in array");
} else {
alert("Value is not in array");
ids.push(code);
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type='text' id='my_textbox'>
<button>check</button>

Create your array var ids=[];global outside button event, as whenever you click button it is creating new empty array. It will fix your problem.

A few changes are needed:
var ids = []; // `ids` needs to be in the global scope to work as you want it,
// or you could use a different method like localstorage
jQuery(document).ready(function()
{
jQuery("#mybutton").on('click',function () // use `on` not `live` which is deprecated
{
var sel_fam_rel=jQuery("#my_textbox").val();
code =sel_fam_rel;
if($.inArray(code,ids) != -1) // inArray() returns -1 if the value is not in the array, you can use it the way you have it, IMO (purely subjective), using `!=-1` is preferable as it's more clear what the code in intend to do
{
alert("Value is in array");
}
else
{
alert("Value is not in array");
ids.push(code);
}
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" id="my_textbox" value="10"/><br>
<input type="button" id="mybutton" value="Click me"/>

use below code . take your ids out side of click event . as per your code each time when you click button ids reset .
var ids = []; // declare as global variable
jQuery(document).ready(function()
{
jQuery("#mybutton").live('click',function ()
{
var sel_fam_rel=jQuery("#my_textbox").val();
code =sel_fam_rel;
if($.inArray(code,ids) >= 0)
{
alert("Value is in array");
}
else
{
alert("Value is not in array");
ids.push(code);
}
});
});

I made a fiddle to your problem, Use indexOf
http://jsfiddle.net/go8o34fq/
jQuery-
var array=["A","B","C","D"];
$('button').click(function(){
var code=$('input').val();
if(array.indexOf(code)==-1)
{
array.push(code);
console.log("if "+array)
}
else
{
console.log("else "+array)
}
});
Just a bit requirement if your need is case-sensitive then use- code.toUpperCase()

jQuery - Enable/Disable a button following checkboxes state

I'm using ASP.NET MVC 4 to develop a web app. I have a page which contains a submit button which should be enabled only if one of my two checkboxes (or both of them) is (are) enabled. The thing is, I'm trying to add an "or" operator in the following script but it does not give me what I want. So, here's my script :
The jQuery sample
And this is the part I'd like to improve :
$(document).ready(function() {
the_terms = $("#the-terms");
the_terms2 = $("#the-terms2");
the_terms.click(function() {
if ($(this).is(":checked")){
$("#submitBtn").removeAttr("disabled");
} else {
$("#submitBtn").attr("disabled", "disabled");
}
});
});
And I can't find a way to tell my document "Okay, if one of these 2 checkboxes (or both of them) is (are) checked, we can press on the button. If not, don't allow it".
Any idea guys?

It can be done with:
Fiddle
$('.checkbox').change(function(){
$('#submitBtn').prop('disabled', !$('.checkbox:checked').length > 0)
});
Note:
This find the checkboxes by class name checkbox so it will work with two checkboxes, whereas your original code is looking at a single checkbox via its ID.
Use the change event not click.

Simply use
$(".checkbox").click(function() {
$("#submitBtn").prop("disabled", !$('.checkbox:checked').length);
});
DEMO

$(document).ready(function() {
the_terms = $("#the-terms");
the_terms2 = $("#the-terms2");
$('.checkbox').change(function(){
$("#submitBtn").prop("disabled", !(the_terms.is(":checked") || the_terms2.is(":checked")));
});
});

// Make a function to be called on onload or on click
function checkTerm() {
jQuery('input[type="submit"]').attr('disabled',!jQuery('input.term:checked').length > 0 ) ;
}
// Call the function on load
$(document).ready(checkTerm) ;
// And call it on check change
jQuery(document).on('change','input.term',checkTerm) ;

Try below modified script , please check if it works as you want.
$(document).ready(function() {
the_terms = $("#the-terms");
the_terms2 = $("#the-terms2");
if(the_terms.is(":checked") || the_terms2.is(":checked"))
{
$("#submitBtn").removeAttr("disabled");
}
else
{
$("#submitBtn").attr("disabled", "disabled");
}
the_terms.click(function() {
if ($(this).is(":checked") || the_terms2.is(":checked")){
$("#submitBtn").removeAttr("disabled");
} else {
$("#submitBtn").attr("disabled", "disabled");
}
});
the_terms2.click(function() {
if ($(this).is(":checked") || the_terms.is(":checked") ){
$("#submitBtn").removeAttr("disabled");
} else {
$("#submitBtn").attr("disabled", "disabled");
}
});
});

Jquery validation not working properly?

I am trying to do required validation in a asp.net page.
I have multiple controls that will be hidden and displayed.
Controls like checkboxlist,dropdownlist,multiselectedlistbox.
I am using a css class called required attaching to all these controls to check the validation.
I am trying to check if each control has value or not but my code is checking each options with in each controls.
I am really not finding a way not a jquery expert just a novice...
Here is my code any ideas anyone please....
$("input[type='submit']").click(function () {
if ($(this).val() != 'Back') {
var names = [];
var info=" ";
$('.required input').each(function () {
var control = $(this);
if (control.is(':enabled')) {
names[$(this).attr('name')] = true;
}
});
$('.required option').each(function () {
var control = $(this);
if (control.is(':enabled')) {
names[$(this).attr('name')] = true;
}
});
for (name in names) {
var radio_buttons = $("input[name='" + name + "']");
if ((radio_buttons.filter(':checked').length == 0) ||(radio_buttons.filter(':selected').length == 0)) {
info += radio_buttons.closest("table").find('label').html()+"</br>";
}
}
if (info != " ") {
$("#validation_dialog p").html(info);
$("#validation_dialog").dialog({
title: "Validation Error!",
modal: true,
resizable: false,
buttons: {
Close: function () {
$(this).dialog('close');
}
}
});
return false;
}
}
});
here is a fiddle for it...
http://jsfiddle.net/bDmgk/35/

I think what you want is:
$(".required input[type='radio']:checked").each(function(){
});
instead of :
$(".required option").each(function(){ ... });

Hi I made some changes to your fiddle basically I checked for the inputs inside each column like this and then I added them to your names array.
Using
$('table.required:eq(0) input:checked')
I you can got all the inputs that are checked on the first column if the lenght of the array returned is 0 then no input is checked, i't the same procedure for the other ones.
An yes those input names are weird.
Check this fiddle
JSFiddle

Form validation with Jquery not behaving as expected

I am using jQuery to validate some fields in a form, and seem to be having an issue with one field in particular (#inputTel).
If an incorrect format is entered, an error message pops up underneath, which is fine, but the problem is once the correct format is entered the message does not disappear.
Here's a jsFiddle with the complete demo.
This is the section in question:
//Tel Validate
function is_valid_tel() {
$this = $("#inputTel");
var pattern = new RegExp("^\d{11}$");
if (pattern.test($this.val())) { // valid
if ($this.closest(".control-group").hasClass("error")) $this.closest(".control-group").removeClass("error");
$this.siblings(".help-inline").css("display", "none");
return true;
} else { // error
if (!$this.closest(".control-group").hasClass("error")) $this.closest(".control-group").addClass("error");
$this.siblings(".help-inline").css("display", "block");
return false;
}
}
Every other field works as expected except this one. My jQuery skills are limited so I'm unsure of how to solve this.

Problem in your code:
Replace var pattern = new RegExp("^\d{11}$"); with var pattern = new RegExp(/^\d{11}$/);
Updated code
//Tel Validate
function is_valid_tel() {
$this = $("#inputTel");
var pattern = new RegExp(/^\d{11}$/);// Update this line
if (pattern.test($this.val())) { // valid
if ($this.closest(".control-group").hasClass("error")) $this.closest(".control-group").removeClass("error");
$this.siblings(".help-inline").css("display", "none");
return true;
} else { // error
if (!$this.closest(".control-group").hasClass("error")) $this.closest(".control-group").addClass("error");
$this.siblings(".help-inline").css("display", "block");
return false;
}
}
Check the fiddle http://jsfiddle.net/rfg8H/

You could also use something like below, less cubersome:
$(function() {
function validateTheForm() {
var ok = true;
$(".input-medium").each(function() {
if($(this).val() == "") //use regex actually here
{
$(this).next().css("display","inline");
ok = false;
}
else {
$(this).next().css("display","none");
}
});
return ok;
}
$(".btn").click(function() {
$("form").submit(validateTheForm());
$("form").submit();
});
});

jQuery: FadeIn a selected value on click

I have a selected box with 5 values. I'm trying to fadeIn inputs of what is selected in the box. For example: If input1 is selected, fade in input1 on click.
Here is what I'm trying to do:
$(document).ready(function(){
$('.btn').click(function() {
if($("#selectbox").value == 'Input1') {
$(".input1").show();
} else if($("#selectbox").value == 'Input2') {
$(".input2").show();
} else if($("#selectbox").value == 'Input3') {
$(".input3").show();
} else if($("#selectbox").value == 'Input4') {
$(".input4").show();
} else if($("#selectbox").value == 'Input5') {
$(".input5").show();
}
}
});
And here is a NOT working fiddle:
http://jsfiddle.net/rzMHJ/

Your code have two errors and that's why its not working.
$("#selectbox").value should be $("#selectbox").val()
you have not closed your click event with );
Also its much better to use switch case in this example.
Working Demo: http://jsfiddle.net/naveen/Zn2yy/
Update (based on Nick Cravers comment)
For this particular scenario you could simplify code a lot like this.
Demo: http://jsfiddle.net/nick_craver/BWacA/

There are two problems with your code that is causing it to fail.
First, replace .value with the jQuery function val().
Second, add ); to the second to last } at the end.
Here is working refactored code:
$(document).ready(function() {
$('.btn').click(function() {
var show = "." + $("#selectbox").val().toLowerCase();
$(show).fadeIn();
});
});