jQuery-在动态变量之上添加

Question

So I have the below code that is working great for me!

$("#custom_logo").css("marginLeft", $(".rt-container:first").css("marginLeft"));

But my problem is that I want to be able to add 15 more pixels to the margin but the below code does not work at all.

$("#custom_logo").css("marginLeft", $(".rt-container:first").css("marginLeft")+15); 

I am presuming that is it because the output will be somthing like '260px15' rather than '275px' which is what I am aiming for. I was wondering if there was a way to do this simply that I am over looking?

Answer 1

The following will work for you!

$("#custom_logo").css("marginLeft", parseInt($(".rt-container:first").css("marginLeft")) +15);

parseInt() can remove the 'px' from the end of the string and convert to an integer.

Answer 2

$("#custom_logo").css("marginLeft",

 ($(".rt-container:first").css("marginLeft").slice(0,-2) +15 )* 1)