if(string_name.length === 0){ // string is empty } ExampleBelow is the example code given, that shows how to use the length property to check the empty string.Open Compiler var str = ''; if(str.length === 0){ document.write('String is empty'); } Following is the out...
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...
publicclassStringNullOrEmptyCheck{ publicstaticvoidmain(String[] args){ // 示例1:测试一个为null的字符串 Stringstring1=null; checkString(string1); // 示例2:测试一个空字符串 Stringstring2=""; checkString(string2); // 示例3:测试一个非空非null的字符串 Stringstring3="Hello, World!"; chec...
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...
To check if a string is empty in React, access its length property and check if it is equal to 0, e.g.if (str.length === 0) {}if the length of the string is equal to 0, then the string is empty, otherwise it is not empty. ...
Example: Checking for Empty String using eq Operator $str = ""; if ($str eq "") { print "String is empty\n"; } Output: String is empty Similarly, we can utilize the ne operator to check if a string is not empty. $str = ""; if ($str ne "") { print "String is not ...
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...
// Scala program to check whether// a string is empty or notobjectSample{defmain(args:Array[String]){valstr1=newStringBuilder("This is india");valstr2=newStringBuilder("");if(str1.isEmpty)println("string 'str1' is empty");elseprintln("string 'str1' is not empty");if(str2.isEmpty...
3. Check String is Empty Using not OperatorThe not operator is a logical operator that returns True if the value or expression is False, and False if the value or expression is True. So if we specify not before the string in the if condition, It will become True when the string is ...