if(string_name.trim() === ''){ // string is empty } ExampleBelow is the example code given, that shows how to use the trim() method to check the empty string.Open Compiler var str = ' '; if(str.trim() === ''){ document.write('String is empty'); } Following is...
npm install check-empty-string Usage You can use thecheckandsanitizefunctions. Below is an example of how to use these functions: constisEmpty=require('check-empty-string');consttext=...if(isEmpty.check(text)){console.log('The string is completely empty');}else{console.log('The string is...
4. Check String is Empty Using bool() Function Thebool()function is a built-in function that returns the Boolean value of a specified object. It returnsTrueif the string is not empty andFalseif it is empty. Since empty string is considered “falsy” and will evaluate toFalsewhen passed t...
Here is another option, “-n”, to check whether the specified string is empty or not. It works on the rule of checking the length of a string by counting the string characters in it. If the length of a particular string turns out to be other than zero, it will return “true”; o...
Example: Checking for Empty String usingeqOperator $str="";if($streq"") {print"String is empty\n";} Output: Stringisempty Similarly, we can utilize theneoperator to check if a string is not empty. $str="";if($strne"") {print"String is not empty\n";}else{print"String is empty...
To check if a string is empty or not, we can use the built-in empty() function in PHP. The empty() function returns true if a string is empty; otherwise it returns false. Here is an example: $myString = ""; if (empty($myString)) { echo "string is empty"; }else{ echo "str...
There are several ways to check a string to see if it’s empty. However, you should try to always use the following method. It’s faster, and uses less resources. This may seem like a minimal piece of code - but if you were checking strings through out your application, it all adds...
cout<<"[ERROR] string is empty!"<<endl:cout<<"string value: "<<string1<<endl;checkEmptyString(string2)?cout<<"[ERROR] string is empty!"<<endl:cout<<"string value: "<<string1<<endl;returnEXIT_SUCCESS;} Output: Use thestrlen()Function to Check if String Is Empty in C++...
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public class NullOrEmptyCheckExample { public static void main(String[] args) { String str1 = null; String str2 = ""; String str3 = "Hello, World!"; // Check if str1 is null or empty if (str1 == null || str1.length() == 0) { System.out.println("str1 is null or empty...