如何获取Javascript中HTML属性的某些值？

Question

I would like to take the value of an attribute, process it and then replace a PHP variable with the value we receive at the end.

The data attribute is data-id , all I need assistance with is getting the value of data-id into Javascript on a click event , the rest I can do.

An example:

Person clicks an tag with the data-id set as, say, 7. I'd then need to extract that 7 from the HTML code and into a Javascript variable so I can work with said value.

I hope this is clear enough

Answer 1

This will do the trick.

$(selector).click(function(){
    var dataAttrId = $(this).attr('data-id');
    // Your code goes here...
});

Answer 2

Try this

$('#someelement').click(function(){
    $(this).data('id');
});

Answer 3

Use this

jQuery('your id or class or element').click(function(){
    var mainData= jQuery('your id or class or element').attr('data-id');
alert(mainData);
});