How to express less than or equal to in javascript

In JavaScript, less than or equal to can be represented by the "

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

In JavaScript, less than or equal to can be expressed using the "

"

The "

The "

Example:

console.log(5 <= 3);
// expected output: false

console.log(3 <= 3);
// expected output: true

// Compare bigint to number (note: bigint is not supported in all browsers)
console.log(3n <= 5);
// expected output: true

console.log(&#39;aa&#39; <= &#39;ab&#39;);
// expected output: true

Syntax:

x <= y

• If the left operand is less than or equal to the right operand, return true, otherwise return false.

Usage of less than or equal to (<=) operator

String and string comparison

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

String and numerical 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

Comparison of numerical values ​​and numerical values

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

##Comparison of numerical values ​​and large integers

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

Compare Boolean, null, undefined and 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

[Recommended learning:

javascript advanced tutorial】

The above is the detailed content of How to express less than or equal to in javascript. For more information, please follow other related articles on the PHP Chinese website!