can some one tell me how can i remove string element from an array i have google this and all i get is removing by index number
my example :
var myarray = ["xyz" , "abc" , "def"] ;
var removeMe = "abc" ;
myarray.remove(removeMe) ;
consle.log(myarray) ;
this is what i get from the console :
Uncaught TypeError: Object xyz,abc,def has no method 'remove'
jsfiddle
Since you're using jQuery
myarray.splice($.inArray("abc", myarray), 1);
EDIT If the item isn't in the array, this 'one-liner' will likely throw an error. Something a little better
var index = $.inArray("abc", myarray);
if (index>=0) myarray.splice(index, 1);
indexOf. Jquery's inArray will abstract the funcationality from the browser.
>=0 jsperf.com/not-vs-gt-vs-ge/4 (and for correct answer ofc)
From https://stackoverflow.com/a/3955096/711129:
Array.prototype.remove= function(){
var what, a= arguments, L= a.length, ax;
while(L && this.length){
what= a[--L];
while((ax= this.indexOf(what))!= -1){
this.splice(ax, 1);
}
}
return this;
}
var ary = ['three', 'seven', 'eleven'];
ary.remove('seven')
or, making it a global function:
function removeA(arr){
var what, a= arguments, L= a.length, ax;
while(L> 1 && arr.length){
what= a[--L];
while((ax= arr.indexOf(what))!= -1){
arr.splice(ax, 1);
}
}
return arr;
}
var ary= ['three','seven','eleven'];
removeA(ary,'seven')
You have to make a function yourself. You can either loop over the array and remove the element from there, or have this function do it for you. Either way, it is not a standard JS feature.
Try like below,
myarray.splice(myarray.indexOf(removeMe),1);
You can add this below script (from MDN) for browsers that doesn't support indexOf
if (!Array.prototype.indexOf) {
Array.prototype.indexOf = function (searchElement /*, fromIndex */ ) {
"use strict";
if (this == null) {
throw new TypeError();
}
var t = Object(this);
var len = t.length >>> 0;
if (len === 0) {
return -1;
}
var n = 0;
if (arguments.length > 0) {
n = Number(arguments[1]);
if (n != n) { // shortcut for verifying if it's NaN
n = 0;
} else if (n != 0 && n != Infinity && n != -Infinity) {
n = (n > 0 || -1) * Math.floor(Math.abs(n));
}
}
if (n >= len) {
return -1;
}
var k = n >= 0 ? n : Math.max(len - Math.abs(n), 0);
for (; k < len; k++) {
if (k in t && t[k] === searchElement) {
return k;
}
}
return -1;
}
}
indexOf
indexOf doesn't find the element, you are gonna splice with index -1 which still removes an elementmore simple solution
var myarray = ["xyz" , "abc" , "def"];
var removeMe = "abc";
var theNewArray = myarray.filter(s => s !== removeMe);
console.log(theNewArray); // will return ["xyz" , "def"]
