增加点击值

Question

Every time I click on a button I want its z-index to increase one by one. How can I do it?

$('#Box').css('z-index', 'newindex');

Answer 1

对于jQuery 1.6及更高版本，请使用：

$('#Box').css('z-index','+=1');

Answer 2

尝试：

$('#Box').css('z-index',$('#Box').css('z-index') + 1);

Answer 3

Read the index. Add one to the index. Reset the index with the new value.

var myElem = $('#Box');
var currentIndex = myElem.css('z-index') || 0;
myElem.css('z-index', currentIndex+1);

Answer 4

You can use jQuery's .css method both to get and set a particular value.

Since you want to take the current value and increment it, you would first use $('#Box').css('z-index') to get the value, then you would increment it and pass it to $('#Box').css('z-index', newvalue) .