I've added to my HTML these lines:
"</script>$(document).ready(func a() {
$('img').click(function(){
return $(this).attr('src');
});
});</script>"
and if I set instead of return - alert, then I get what I need.
Later I've tried this on my tap recognizer function:
var a = self.webView.stringByEvaluatingJavaScriptFromString("a()")
print(a)
but it prints me an empty string. What I do wrong? Can anyone help me to fix that?
I may be a little late but AFAIK you should call "a();". You might be missing the semicolon
Related
How can I strip the $ and , characters from the following value, the code i am using is not working
var asset_value = second_col.find("input[type=text]").val().replace('$', '');
second_col.find("input[type=text]").val() looks like
$1,080.00
Update:
I am not sure why i am getting voted down! the duplicate solution does not solve my question, nor does any answer below, except for this, very strange!
second_col.find("input[type=text]").val(function(i, val) {
return val.replace(/\$|,/g, '');
});
var asset_value = second_col.find("input[type=text]").val();
You can use regex for this:
second_col.find("input[type=text]").val().replace(/[\$,]/g,'').
Assign this value to variable and use it.
I'd like to set css of a div element dynamically using jQuery css() function instead of using string literals/ string constants for the css() function. Is it possible?
Instead of using the following codes with string literals:
$('#myDiv').css('color', '#00ff00');
I would like to use variables to set css for #myDiv element like
Version 1:
var propertyName = get_propery_name(myVariable1); // function get_propery_name() returns a string like 'background-color'
var value = get_value(myVariable2) ; // function get_value() returns a string like '#00ff00'
$('#myDiv').css(propertyName, value);
Version 2: (just hard coded to see if they work without calling custom functions like version 1 above):
var propertyName = 'background-color';
var value = '#00ff00';
$('#divLeftReportView').css(propertyName, value);
Both variable versions of codes do not work. Please help. Thanks.
Both of your examples will work just fine. I would suggest just a bit cleaner approach (personal syntax preference):
$(document).ready(function () {
$('#myDiv').css(get_propery_name(myVariable1), get_value(myVariable2));
}
Here's a working fiddle.
If you want to take it a step further, you can return a CSS map instead of strings:
$('#divLeftReportView').css(GetCssMap("foo"));
function GetCssMap(mapIdentifier) {
return { "background-color" : "#00ff00" }
}
Here's a working fiddle.
The code you posted here should work. I have done both versions of what you are trying to do several times. If it is not working, there is a good chance that something is wrong somewhere else in your javascript OR that you do not have the correct selector/id for the element(s) which you want to change.
Try adding alert("test"); immediately after $('#divLeftReportView').css(propertyName, value);. If you get the popup saying "test" then the problem is with your selector. If not, then the problem is a bug in your javascript.
Also try adding $('#divLeftReportView').css("background-color", "#00ff00"); in the same place. That will confirm whether or not the selector is working.
Seems to work fine at http://jsfiddle.net/gaby/6wHtW/
Make sure you run your code after the DOM ready event..
$(function(){
var propertyName = 'background-color';
var value = '#00ff00';
$('#divLeftReportView').css(propertyName, value);
});
otherwise your elements might not be present in the DOM..
You can also pass multiple CSS parameters within one variable as an array:
$(function(){
var divStyle = {'background-color': '#00ff00', 'color': '#000000'}
$('#divID').css(divStyle);
});
yes, using jQuery attr method you can change css dynamically
var height=$(".sampleClass1").innerHeight();
$('.sammpleClass2').attr('style', 'min-height:'+height+' !important');
What is wrong with this function?
function moveColor()
{
document.getElementById(purple).style.marginRight = "34px";
}
with this html:
<div><img src="images/purple.png" id="purple" onclick="colorpurple()" onmouseover="moveColor()" style="cursor:pointer;"/></div>
I also wanted to have it move over a period of 1 second, but can't seem to solve this simple problem.
You need to put the id in quotes (so that it is treated as a string).
document.getElementById('purple').style.marginRight = "34px";
The current usage means that purple refers to a variable, which is not defined so it has an undefined value and so the document.getElementById method returns nothing..
Seems like you missed the quotes on the function getElementById.
Like this:
function moveColor() {
document.getElementById('purple').style.marginRight = "34px";
}
I am trying to get plain text out of value stored in variable like this
var lb = $(this).attr("htmllabel");
var text = $(this).html(lb);
alert(text);
When the alert popup it give result as object[Object] but I was expecting the actual string after application of the function.
Can anyone help me in this? Thanks.
$(this).html(lb)
This line is setting the html of whatever this is to whatever is stored in lb. It then returns the jquery object for chaining purposes.
If you want the html of this then you just call $(this).html() with no parameter.
Your code on the second line is setting something not getting something ...
Can you include your HTML and the actual data you want in the alert box and this might help shape the answer
Take a look at the documentation for the html method:
http://api.jquery.com/html/#html2
As you can see from the documentation your code is setting the html for this and then returning a jQuery object. What is it that you want to display exactly?
If you're simply looking to get the value of your custom attribute "htmllabel", you can do the following:
var val = $(this).attr("htmllabel");
alter(val);
As a side note; I would suggest naming custom attributes with data-*according to the HTML5 spec like this:
<div data-htmllable></div>
Your can then access the value of the attribute in two ways (jQuery 1.4.3+):
var val1 = $(this).attr('data-htmllabel');
var val2 = $(this).data('htmllabel');
// Outputs same value //
alert(val1);
alert(val2);
I hope this helps!
I'm a noob in Javascript but here is my problem:
I'm cleaning up some PHP-files. Some of them contain Javascript functions which I want to transfer to a separate xxx.js file.
Most of them are working fine again but one causes me trouble. I think because of the punctuation (the ' and ").
Here's the script as it shows up IN the PHP-file:
function preview(){
dd=window.open('','prv','height=600,width=500,resizable=1,scrollbars=1')
document.addnews.mod.value='preview';document.addnews.target='prv'
document.addnews.submit();dd.focus()
setTimeout(\"document.addnews.mod.value='addnews';document.addnews.target='_self'\",500)
}
When copying this to the xxx.js file it won't work.
Anybody knows how it should look in a real .js-file?
Thanks in advance!
Cleaned a bit:
function preview() {
var dd = window.open('', 'prv', 'height=600,width=500,resizable=1,scrollbars=1');
document.addnews.mod.value = 'preview';
document.addnews.target='prv';
document.addnews.submit();
dd.focus();
setTimeout(function() {
document.addnews.mod.value = 'addnews';
document.addnews.target = '_self';
}, 500);
}
Remove the backslashes in front of the double quotes.
setTimeout("document.addnews.mod.value='addnews';document.addnews.target='_self'",500)
It looks like this function was originally in a double-quoted string, so all double-quotes inside are escaped. Good for you for moving them out of PHP :)