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Jquery Increment Decrement Numeric Properties

Numeric CSS properties can be incremented and decremented with the += and -= syntax, respectively, using the .css() method:

 // Increment using the += syntax
 $("#target-element").css("font-size", "+=10");
 // You can also specify the unit to increment by
 $("#target-element").css("width", "+=100pt");
 $("#target-element").css("top", "+=30px");
 $("#target-element").css("left", "+=3em");
// Decrementing is done by using the -= syntax
 $("#target-element").css("height", "-=50pt");


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