I was just wondering how to go about checking the content of a string to see if it matches a set criteria?
For example, if I want to make sure somebody enters a date as mm/yyyy, how do I check to ensure there are:
2 numbers between 1 and 12 before the /.4 numbers between 2005 and 2020 after the /.And that the / appears between the two. I know in PHP you would use a regular expression, but how do you do it in Javascript?
What is the search criteria to find a $ in a string.
result = string.search(????);
I have an array [code]...
How could I do to remove the elementsthatmatch the 'remove' list?
I have a simple example below showing how when I pass in the value of the value attribute of option node, and then use if operator to check whether parameter is a string or not, even though it's a string, it converts it to false boolean and triggers the else statement rather than calling a function.callback should be a string so why is it saying otherwise?
View 3 Replies View RelatedI have this, VB.Net code..how can i do exact same thing in javascript?
How to check if some char in textbox contains one of the ones in string "allowedChars"
i need a check that can go through a string to see if it contains any numbers.
View 12 Replies View RelatedFunction findsometing()
(
var myString = 'results' + '<BR>'
[code]....
I have thought about using the standard email checker pattern but we have had problems in the past so looking to check if the string follows these simple rules.
has no spaces, has a character/s at the start followed by an @ then has a character/s followed by a (dot) then another character/s
i.e
a@a.a
aa@aa.aa
aaa@aaaaaaaaa.aaa
i am not sure how the standard pattern works but feel that it may be to complex which causes some email address to fail.
So I want to be able to check the last 15 characters of a string for either <br /> or a space. I know how to do this with PHP but I have no clue how to do this with Javascript and Google is failing me. Could someone point me in the right direction?
Example string: var string = "Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat."
I'm assuming this will be done with lastIndexOf but I do not know how to do it. So to reiterate, I want to check to see if either a space exists, or <br />, delete everything after that, and return the string. So the output of the example string would be...
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo
I've to check if a string contains the hostname my 5 cents and it seems to work but not being at all a regex guru .....
Code JavaScript:
var re = new RegExp(window.location.hostname,'i');
alert(re.test(str));
str can be like:
[Code]...
I am trying to check for Arabic characters in a string using Regular expressions. This should return true, as the string in the str variable is indeed Arabic character. But it returns false.
View 2 Replies View RelatedI am trying to do a pattern match and check something in a condition but cant get it to work. The first value changes and I need to check and do something if I get a hit on it.
Code:
var mydata = "?first=one&second=two&third=three";
if (mydata.indexOf("first") == "something")
{
alert("No Hit");
} else {
alert("Hit");
}
Basically I am trying to find out if first is equal to one in the mydata string. My above attempt is not working.
I have read this article:
http://www.nowsell.com/pop-ups/pop-up-cookies.html
While it was useful to me it did not cover my particular question. I'd like to trigger an exit pop-up that is triggered once per visitor and only if the visitor has NOT reached a specific page of the site.
For simplicity purposes, say the site consists of pages 1,2,3,4,5,6 with 1 being the main entry.
I'd like the pop-up to appear one time to each unique visitor who does not view page 6 during their site visit and appear as they are exiting the site.
Even better would be if the code could be served using SSI if it is required to be on all pages of the site so it could easily be turned on or off.
Even better would be if there were a way to make it pop to every Nth visitor up to a specific count and then stop on it's own.
I want to check if the user enters alphabet or numbers only in the
text box. If the user enters non-alphabet or non-numbers, I should pop
up a message and doesn't allow the user to do that. I am using regular
expression to do the checking. But it seems it always return false...
Looking to return true if a question mark (?) exists in a given string.I was thinking of something like the following, but it obviously doesn't work.
alert('/?'.test('my?string'));
Ive just started to learn JavaScript, and I have trouble to write JavaScript code which checks a string to contain at minimum one uppercase letter, one lowercase letter one number and one special character with no white space allowed.
View 4 Replies View RelatedA user will be able to choose a home for example based on criteria. The only requirement will be to choose a state. From their they can narrow down their search by the following (these will be dropdowns with options):
county
series
type
split bedroom
footage range
price range
sort by
bedrooms
bathrooms
1/2 baths
garage
They don't have to choose in that order. I will have all that info in an access database.
So the user can choose a state then depending on what options they choose, all the other criteria adjust dynamicly, and if a user selects another criteria all the other criteria changes as well as the ones they may have already chosen, and so on. So basiclly when a user hits submit form they will always have a result.
I am building an online store and need to restrict checkout unless a customer has bought at least $20 of items. If they have >$20, they can check out. If they have <$20, they should get an error when they click the checkout button that will explain that there is a $20 minimum. I don't want them to be able to checkout, so maybe I also need to disable the button or hide it?
Here are the two elements in my HTML:
The total price div:
Code:
<div id="totalprice">{tag_productgrandtotal}</div>
The checkout button:
Code:
{tag_buybutton,<img alt="" src="/CatalystImages/shop_checkout.png" />}
Here is what I've tried to put together with my next-to-nothing knowledge of Javascript:
Code:
<body onload="checkOut()">
<script type="text/javascript">
function checkOut() {
[code]...
I am trying to adapt an existing script which returns a list of URLS from my website based on an entry in a search box. I would like to adapt it so that I can enter a value other than the string value "xxx" but so that I can search for "xxx" or "yyy". I can see that the script uses the function GetElementsByName with a Name value. Is there any way that I can change the value of the Name to be '"xxx" or "yyy"' instead of just "xxx" or should I be using a different function?
View 4 Replies View RelatedGet distinct elements based on criteria?
View 1 Replies View RelatedI have a text field where a user can enter either a(n):American zip code (example: "02475")Canadian zip code (example: "A3F 4G6")A "city/state abbreviation" combination (example: "Toronto, ON", or "Las Vegas, NV")For the most part, users don't have much of a problem with the first two criteria, but some people have some trouble with the third, either by entering simply a state ("NB", or "Texas"), a city, or spelling out the state name "Chicago, Illinois". I need to put together some validation that makes sure that:
If the entered text is not an american or canadian zip code (IOW, if the entered text contains no numbers at all - in that case, move on to the next validation check)Check to see if the third to last character is non alphanumeric (if they entered the city/state combination correctly, there would be some sort of non-alphanumeric separator between the city and state abbreviation)if the entered text doesn't fit the criteria, return the error.
function hasNumbers(string) {
var regex = /d/g;
return regex.test(string);
}
[code]....
I'm trying to figure out how I can check if a certain div on my page contains an image or not. Kind of; if (#div contains 'img'){do this} else {do that The div will always contain some code etc. but not an image typically. the image name is always the same: button.png if that matters.
View 1 Replies View RelatedI have a <div> html element which contains other html tags, as well as plain text inside those tags. How do I grab only the content within the div that will actually be displayed in the browser, and put it in a Javascript string variable?
View 3 Replies View RelatedI'm trying to write a piece of javascript that will check a single checkbox depending on a dynamically-imported piece of information further up the page. The page will look like this:
[Code]....
The variable which indicates which checkbox should already be checked is in the div 'title' in the p class 'white'. So in the case above, when the page loads the 'Option 1' checkbox should already be checked. The javascript i have, rather poorly, cobbled together so far just doesn't work, and I was wondering if anyone could point me in the direction of some useful tutorials. All the tutorials I have read so far deal with mass checking all the boxes with a button click.
So let's say I have a list of 11 elements and I want to wrap groups of them by 2.
[Code]...
Well, I need some light in this simple thing I'm trying to do. I'm
using the XMLHttpRequest to retrieve some data from a db via php
script. The result is passed to a "results" array of strings, which
contain the data from the script.
But, the data from the script, which are the content of the strings,
have html tags in it. The thing is: I'm using the DOM to append the
string result to a table already built in the page (using
create_element and appendchild).
insertO = document.getElementById("output_table");
oTR = document.createElement('tr');
oTD = document.createElement('td');
oText = document.createTextNode(Text);
oTD.appendChild(oText);
oTR.appendChild(oTD);
insertO.tBodies[0].appendChild(oTR);
The Text var would contain something like "<font color="red">this
<b>is</b> html</font>".
This way the output isn't parsed, i.e., it shows the tags.
Does anyone have an idea on how to overcome this?