Return the outline style of a <div> element:
alert(document.getElementById("myDiv").style.outlineStyle);
<!DOCTYPE html> <html> <head> <style> #myDiv {/* w w w . j a va2 s .c o m*/ border: 1px solid red; } </style> </head> <body> <div id="myDiv" style="outline-style:dotted;">This is a div element.</div> <br> <button type="button" onclick="myFunction()">Return outline style</button> <p id="demo"></p> <script> function myFunction() { document.getElementById("demo").innerHTML = document.getElementById("myDiv").style.outlineStyle; } </script> </body> </html>