How to remove a specific element in array in JavaScript [duplicate]

var newArray = [];
var a=["a","b","c"];
for(var i=0;i<a.length;i++)
    if(a[i]!=="a") 
        newArray.push(a[i]);

As of newer versions of JavaScript:

var a = ["a","b","c"];
var newArray = a.filter(e => e !== "a");