check if array has value php
$myArr = [38, 18, 10, 7, "15"];
echo in_array(10, $myArr); // TRUE
echo in_array(19, $myArr); // TRUE
// Without strict check
echo in_array("18", $myArr); // TRUE
// With strict check
echo in_array("18", $myArr, true); // FALSEjavascript method to see if item exists in array
var fruits = ["Apple", "Banana", "Mango", "Orange", "Papaya"];
// Check if a value exists in the fruits array
if(fruits.indexOf("Mango") !== -1){
alert("Value exists!")
} else{
alert("Value does not exists!")
}check value exist in array javascript
[1, 2, 3].includes(2); // true
[1, 2, 3].includes(4); // false
[1, 2, 3].includes(1, 2); // false (second parameter is the index position in this array at which to begin searching)check if a element exists in array javascript
const fruits = ["Banana", "Orange", "Apple", "Mango"];
fruits.includes("Mango") // Returns truehow to check if an element already exists in an array in javascript
function includes(arrayOfArrays, item) {
let array, i, j;
for(i=0; i<arrayOfArrays.length; ++i) {
array = arrayOfArrays[i];
for(j=0; j<array.length; ++j) {
if(array[j] === item) {
return true;
}
}
}
return false;
}Checking whether a value exists in an array javascript
const fruits = ['apple', 'banana', 'mango', 'guava'];
function checkAvailability(arr, val) {
return arr.some(arrVal => val === arrVal);
}
checkAvailability(fruits, 'kela'); // false
checkAvailability(fruits, 'banana'); // trueCopyright © 2021 Codeinu
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