I came across the following code to check whether a variable was an integer:
Code:
function isInteger (s)
{
var i;
[code]...
I like to use curly braces, so modified it as follows
Code:
function isInteger (s) {
var i;
if (isEmpty(s)) {
[code]...
It now doesn't work. What am I missing?
javascript:alert(function(){if(window) return;})
becomes:
function(){
if(window){
return;
}
}
my webstie allows users to change the color of the background, so to keep the text readable I have it changing as well.the color picker I am using has text boxes with rgb values 0-255 for each.I am trying to get one bit of text to alternate between red and blue with the conditions
Code:
if(blue>green && blue>red)
{
[code]....
I am reading the ECMAScript specs trying to figure out if the next
line is a legal statement or not new Foo();
I think the above code may only be legal as an expression and not as a
stand alone statement. Would this make the above a bug?
Douglas Crockford's JSLint will choke on the above line of code and
stop parsing. All the browsers seem to accept it as ok and work as I
expect: the returned object just doesn't get assigned to anything.
The time I have used a line like the above is when the constructor has
side effects and the "class" keeps track of all its instances.
Any ideas what is right or wrong in this case?
I have several text fields on page that I would like to make calculations based on if there is a number input in one of the fields.
So, if the price field is populated, the sale price field would populate using a function to do the calculation.
Now, how do I write the code for this to occur? I know how to get the function to fire based on clicking a submit button, but not sure how to do it simply based on a number keyed into the one field. Is this possible and if so, how?
What is the correct construct for accessing "pageYOffset" in another window?
I've tried this, but it doesn't work:
var mainPageYOffset;
//
mainPageYOffset = parent.main.window.pageYOffset;
It's been a while since I've worked with javascript time comparison,
and I was wondering how I can say "if time < 15:30"?
The semicolon looks out of place to me, and indeed it has caused an
error.
I remember using if statements with null in it. For example, at one
point I used this:
if (value == null) {
value = "something";
}
document.write(value)
However, this script causes an error in any browser. Why can't it
correct the value like it should?
For the following two snippets, they can all pass Firefox.However, I would like to know the rule of thumb when I have to use ; to indicate the end of
[Code]...
I have a two fold question:1) Why would my while statement not be workingI have cleaned up my code a little (although not perfect) but my while statement is not behaving, it does not output any numbers on a console.debug (using google chrome, or any other browser for that matter) which from my understanding it should?and 2) Slightly out of the remit of this forum I suppose, but this code is quite lengthy and I know there are ways to make this more efficient I just dont know what they are?
function generatePurchaseFields(dom) {
new Ajax.Request('/control/?page=tldmaxyears&domain=' + dom, {
method: 'get',
[code]....
This is my first time using the switch statement. I would appreciate your suggestion on how to do this properly. I am trying to get customer age which is (age) and compare it with the monthly rate then the text msg will display in the textarea. Also, I am having trouble figuring out how I can defined my monthlyRate in the switch or do I need to this outside of the switch? Code:
}
i have the following:
a1="asdf"
how can i check in an if statement whether contains a numeric only value and if not then alert.
What is the purpose of with statement in JS?
View 3 Replies View RelatedI am trying to test the id of three input boxes so that I can capitalize the first letter.
The fname and lname work fine but mi does nothing and I get no error is this because of the if statement or the fact that the mi only has one character?
I need to give two separate alerts depending on what the user clicks when they click the "Submit" button. I am using a confirm box. If they click "OK" it thanks them for their order. If they click "Cancel" it should go back to the form. I have written the code that I thought would work but it will not.
function confMsg(){
var s
s = confirm("Click OK to Submit Order. Click Cancel to Cancel")
if (s=="true"){
alert("Thank You for Your Order!")
else
return;
}}
I am working on a script that calculates the rental rate for a property. I currently have this code and form, which works as I wish it to.
Code:
<script type="text/javascript">
function roundCents(amount) {
[code]....
I would like to make the following statement clearner. I'm thinking something like the SQL "variable IN (value1, value2, value2, etc.)" operator.
Code JavaScript:
if((e.which > 47 && e.which < 58) || (e.which > 95 && e.which < 106) || e.which==8 || e.which == 46 || e.which == 37 || e.which == 39 || e.which == 13) return e.which;
How can I get the result for the following SQL statement using JavaScript?
SELECT branch, region, referral, COUNT(DISTINCT LPS) FROM table GROUP BY branch, region, referral
Data:
BranchClientReferral TypeLPS #
402036402430Psychological File Review30
402036402430Psychological File Review50
[code]...
document.write("<img src=' "+r_image[rand_int]+" '>");
could it not be just written like this:
document.write("<img src='r_image[rand_int]' />");
I have an html form that calculates a square footage (length x width)
Code:
<center>
<form name="frmOne">
[code]....
a. only logical operators
b. only comparison operators
c. both logical and comparison
d. you cannot use operators with an if statement.
this is from my javascript book review for the chapter.
you can use both right? sounds silly i know but just want to make sure for my test.
I have the following code
Code:
function hideDisplaySingleSuite(textstring) {
var myclass1 = new RegExp('\b'+textstring+'\b');
//Populate the array with all the page tags
[Code].....
are executed, meaning that first the rows with a class is shown and then they are hidden.
If it is possible to use a string in an if statement?
For example:
If that is not possible (which is probably not its not working with me) how would i go about displaying that?
I'm trying to do some error handling similar to:
Code:
try{
undefinedfunction()
[code]....
so i know how to do it by making one function and designating the image to replace and what to replace it with, like
Code:
function roll_over(img_name, img_src)
{
[code].....
I am looking at a line of code in javascript that I dont understand...
var ad = n % nn;
What I dont understand is what the % represents as a mathmatical
function in javascript.
