window history back (-1) not working

Question

I have use below code to back for the previous page, but it\'s not working. the alert box still popup even i click ok on the page. actually there have 3 page include this windo

Answer 1

Use: window.history.back() instead .go();

http://www.w3schools.com/jsref/met_his_back.asp

or use:

window.alert("Please choose Type of Redemption");
setTimeout(function(){
  window.history.go(-1);
},500);

Answer 2

I would always avoid using alert(), since it kills script in some Browsers. I would open() a new window and ButtonElement.onclick use location =.

Note:

window is implicit, so you don't need to write window.open() or window.location. Additionally, it's fine to leave off .href when referring to location.href