Answers for "check if diffrence in arrays js"

5

js test if string

if (typeof string === 'string') { /* code */ };
Posted by: Guest on April-18-2020
3

compare NaN in javascript if condititon

// Use isNaN() 
// In javascript compare NaN direct alweys return false
let num1 = Number("Vishal");

// This code never work
if(num1 == NaN){  // Direct compare NaN alweys return false so use isNaN() function
  ....... Your Code .......
}  

// This code work
if(isNaN(num1){
  .........Your Code .......
}
Posted by: Guest on May-18-2020
3

javascript check if in array

var extensions = ["image/jpeg","image/png","image/gif"];          
if(extensions.indexOf("myfiletype") === -1){
	alert("Image must be .png, .jpg or .gif");
}
Posted by: Guest on January-13-2020

Code answers related to "check if diffrence in arrays js"

Code answers related to "Javascript"

Browse Popular Code Answers by Language