This question already has answers here:
Javascript getElementById based on a partial string
(9 answers)
Closed 3 years ago.
I just want to know to how to use custom varible with javascript.suppose we have 5 id with name zawsz,baws2,tawsx,paws4,vawsa and we want to execute single DOM command to all these element whose id is define here.
document.getElementById("-aws-").onclick=function(){}
Here -aws- define all the id define above.(-) can be replace with any char/int value;
You could use the following code:
(The following code will select all elements of which the id includes aws.
I have tested this code and it works: https://jsfiddle.net/5042woqz/)
document.querySelectorAll('*[id*="aws"]').forEach(function(item) {
item.onclick=function() {
console.log('click!');
};
});
Items will now be an array containing all your aws- items.
If you have further questions, just let me know.
P.S.: You could achieve the same thing really easily with jquery.
You can use document.querySelectorAll for this:
document.querySelectorAll('[id^="aws"]')
That will select all elements where the id attribute starts with (^=) "aws".
Related
This question already has answers here:
jQuery ID selector works only for the first element
(7 answers)
Closed 2 years ago.
I have the following code snippet
$("#personalizacoesOpcionais")
.find(".qtdPersonalizacao")
.each(function (n, t) {
var i = {};
i.IdProdutoIngrediente = parseInt($(t).attr("data-id"));
i.Qtde = parseFloat($(t).text());
r[n] = i
});
In the html there are several divs personalizacoesOpcionais and each one with numerous elements qtdPersonalizacao.
However, the code snippet above only returns the first item qtdPersonalizacao within the first personalizacoesOpcionais.
However, the code snippet above only returns the first item qtdPersonalizacao within the first personalizacoesOpcionais.
Ids are supposed to be unique within a document and jQuery will just returns the first matching element.
The recommended solution would be to use a class instead of an id for personalizacoesOpcionais.
If this is not possible, for example if you don't control the code that generate the markup, a workaround would be to use $("div[id=personalizacoesOpcionais]") instead of $("#personalizacoesOpcionais")
This question already has answers here:
How to use JavaScript variables in jQuery selectors?
(6 answers)
Closed 4 years ago.
Im trying to get the value of an html element via Id. I now want to use that value to loop through all the elements with the class from the id.val. How can I search for a variable as a class.
$(".BtnSettings").click(function () {
var Daytime = $("#Daytime").val();
//Here i dont know what to do. Instead of .Daytime I want to search for the var Daytime. Or for $("#Daytime").val() obviously, doesnt matter.
$('.Daytime').each(function () {
$(this).prop("checked", true); // Element(s) are now enabled.
});
})
you can use the attr method of jquery to look for a specific attribute just set a value. if you want to change value of said attribute the second parameter of the function will set it for you like.
Daytime.attr("class","newClass")
$("#Daytime").attr("class")
will give you the class of #Daytime
This question already has answers here:
jQuery Data vs Attr?
(3 answers)
Closed 5 years ago.
In code I do this:
var markerName = $(fileInput).closest('tr.file-input-row').find('input[type="text"]')[0].value.replace(/[^a-z0-9]/gi, '-');
$.data(fileInput, 'for', markerName);
in this case, markerName is "file-1"
If I check using:
$('input[type="file"][data-for="file-1"]')
I get an object with length equal to 0... so not found.
However, if I do:
$('input[type="file"]:first').data().for
in this case, the first input[type="file"] is the same input I set the data attribute for, I get:
"file-1"
...as expected.
It looks like it is being set, but it is then not accessible.
Any thoughts why?
TIA
This is not working because you aren't updating the DOM object when you perform the data-for adjustment in the first part of your code. To update the DOM object you should use attr(key, value).
For more info on the differences between data and attr there is a good answer related to this: jQuery Data vs Attr?
If I check using:
$('input[type="file"][data-for="file-1"]')
Neither .data() nor jQuery.data() is part of the object returned by jQuery() : $() call.
This question already has answers here:
Combining selectors?
(3 answers)
Closed 6 years ago.
I need to combine two jquery selectors into a single Jquery object.
I tried $("#selector","#selector"), but its not working and returning blank, do we have any predefined methods to achieve this.
Something like
var combined_Jquery_obj =$("#selector") +$("#selector")
Use add() method when you want to add elements to an existing jQuery object.
var combined_Jquery_obj = $("#selector1").add("#selector2")
Or use comma separated multiple selectors when you want to select multiple selectors.
var combined_Jquery_obj = $("#selector1,#selector2")
Use Multiple Selector
var combined_Jquery_obj =$("#selector,#selector")
This question already has answers here:
jQuery how to find an element based on a data-attribute value?
(9 answers)
Closed 8 years ago.
Similar to the question here , I need to get an element based on its data-id.
The problem I encounter is that I want to retrieve a an a element with a certain data-id using a variable.
lets consider the code below:
var item_id = 12345;
if I want to get the element that has the data-id with the value of item_id, would I do the following ?
$('[data-id=item_id]')
This does not work, and I am kind of stuck on how I can get around this.
You can concatenate the variable using +:
$('[data-id=' + item_id + ']')