# Less than or equal (<=)

The less than or equal operator (`<=`) returns `true` if the left operand is less than or equal to the right operand, and `false` otherwise.

## Syntax

` x <= y`

## Description

The operands are compared using the Abstract Relational Comparison algorithm. See the documentation for the Less than operator for a summary of this algorithm.

## Examples

### String to string comparison

```console.log("a" <= "b");     // true
console.log("a" <= "a");     // true
console.log("a" <= "3");     // false
```

### String to number comparison

```console.log("5" <= 3);       // false
console.log("3" <= 3);       // true
console.log("3" <= 5);       // true

console.log("hello" <= 5);   // false
console.log(5 <= "hello");   // false```

### Number to Number comparison

```console.log(5 <= 3);         // false
console.log(3 <= 3);         // true
console.log(3 <= 5);         // true```

### Number to BigInt comparison

```console.log(5n <= 3);        // false
console.log(3 <= 3n);        // true
console.log(3 <= 5n);        // true```

### Comparing Boolean, null, undefined, NaN

```console.log(true <= false);  // false
console.log(true <= true);   // true
console.log(false <= true);  // true

console.log(true <= 0);      // false
console.log(true <= 1);      // true

console.log(null <= 0);      // true
console.log(1 <= null);      // false

console.log(undefined <= 3); // false
console.log(3 <= undefined); // false

console.log(3 <= NaN);       // false
console.log(NaN <= 3);       // false```

## Browser compatibility

Update compatibility data on GitHub
Desktop Mobile Server Chrome Edge Firefox Internet Explorer Opera Safari Android webview Chrome for Android Firefox for Android Opera for Android Chrome Full support 1 Edge Full support 12 Firefox Full support 1 IE Full support 3 Opera Full support 3 Safari Full support 1 WebView Android Full support 1 Chrome Android Full support 18 Firefox Android Full support 4 Opera Android Full support 10.1 Safari iOS Full support 1 Samsung Internet Android Full support 1.0 nodejs Full support 0.1.100

Full support
Full support