Take your JavaScript skills to the next level with these essential one-liners that will also save you hours of coding 🚀

#### 1) Find the max value in an array:

``````Math.max(...array)
``````

### 2) Remove duplicates from an array:

``````[...new Set(array)]
``````

### 3) Generate a random number between 1 and 100:

``````Math.floor(Math.random() * 100) + 1
``````

### 4) Check if a string is a valid number:

``````!isNaN(parseFloat(string))
``````

### 5) Get the current date and time:

``````new Date().toString()
``````

### 6) Check if a variable is an array:

``````Array.isArray(variable)
``````

### 7) Check if a variable is an object:

``````typeof variable === "object"
``````

### 8) Convert an array to a string:

``````array.join(",")
``````

### 9) Check if a variable is a function:

``````typeof variable === "function"
``````

### 10) Convert an object to an array:

``````Object.values(object)
``````

### 11) Count the occurrences of an element in an array:

``````array.filter(x => x === element).length
``````

### 12) Create a new object with a dynamic key and value:

``````{ [key]: value }
``````

### 13) Check if a string is a palindrome:

``````string === string.split("").reverse().join("")
``````

### 14) Create a new array with unique values:

``````[...new Set(array)]
``````

### 15) Get the current timestamp:

``````Date.now()
``````

### 16) Check if a variable is null:

``````variable === null
``````

### 17) Check if a variable is undefined:

``````typeof variable === "undefined"
``````

### 18) Create a new array with no duplicates:

``````[...new Set(array)]
``````

### 19) Check if an array is empty:

``````array.length === 0
``````

### 20) Create a new array with a specified range of numbers:

``````Array.from({ length: n }, (_, i) => i)
``````