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JavaScript Array every() Method
JavaScript Array every() Method
The JavaScript Array.every() method checks whether all the given elements in an array pass a test by the provided condition and returns a Boolean value. When each given array element satisfying the condition then it returns true otherwise false.
Syntax:array.every(function(currentValue, index, arr), thisValue)
Parameter Values
| Parameter | Description |
|---|---|
| function(currentValue, index, arr) | It required index position to copy the elements to |
| currentValue | The value of the current element Required |
| index | It is optional and is used for the array index of the current element |
| thisValue | It is optional and the value to be passed to the function to be used as its "this" value. |
Browser Support
| Method | Chrome | Edge | Firefox | Safari | Opera |
|---|---|---|---|---|---|
| array.entries(); | Yes | 9.0 | 1.5 | Yes | Yes |
<!DOCTYPE html>
<html>
<body>
<button onclick="myEvery()">click me</button>
<p id="every"></p>
<script>
var ages = [56, 45, 18, 65];
function checkAdult(age) {
return age >= 18;
}
function myEvery() {
document.getElementById("every").innerHTML = ages.every(checkAdult);
}
</script>
</body>
</html>
Output:
Example 2:
<!DOCTYPE html>
<html>
<body>
<script>
var num=[50,30,45,35,20];
function check(value)
{
return value>30;
}
document.writeln(num.every(check));
</script>
</body>
</html>
Output:
No Sidebar ads
