I want to check if an array contains "role". If it does, I want to move the "role" to the front of the array.
var data= ["email","role","type","name"];
if ("role" in data) data.remove(data.indexOf("role")); data.unshift("role")
data;
Here, I got the result:
["role", "email", "role", "type", "name"]
How can I fix this?
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Answer
You can sort the array and specify that the value "role" comes before all other values, and that all other values are equal:
var first = "role";
data.sort(function(x,y){ return x == first ? -1 : y == first ? 1 : 0; });