Jquery的字符串替換，只能更換陣列

Question

開始我有這樣的代碼在這裏：

<script type="text/javascript"> 
    var catURL = window.location.pathname; 
    var catTitle = catURL.split("/"); 
    catTitleNew = catTitle[4].replace("-", " "); 
    alert(catTitleNew); 
    //this will alert will convert this-is-my-title to this is-my-title 
</script> 

而且我不認爲我的代碼替換工作，其僅更換第一"-"我怎麼把它全部更換"-"？

Answer 1

catTitleNew = catTitle[4].replace(/-/g, " "); 

Fiddle