The simplest way to remove a particular element from an array in Javascript is to use the “splice()” method.
First find the index of the element you want to remove with the indexOf() method.
var arr = ["apple", "mango", "orange", "banana"]; // say you want to remove "orange" var i = arr.indexOf("orange");
Then remove the element with “splice()” method.
// if( i > -1 ) arr = arr.splice(i, 1); // result ["apple", "mango", "banana"]
Note that the conditional check is required else if the index is not present then it takes the value -1 and the last element in array will be removed! Also, indexOf is not supported in IE 8 and below and older browsers. To get around that use the polyfill below:
Array.prototype.indexOf || (Array.prototype.indexOf = function(d, e) { var a; if (null == this) throw new TypeError('some error message here'); var c = Object(this), b = c.length >>> 0; if (0 === b) return -1; a = +e || 0; Infinity === Math.abs(a) && (a = 0); if (a >= b) return -1; for (a = Math.max(0 <= a ? a : b - Math.abs(a), 0); a < b;) { if (a in c && c[a] === d) return a; a++ } return -1 });
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