Answers for "javascript check if string is empty"

2

javascript regex check if string is empty

function IsEmptyOrWhiteSpace(str) {
    return (str.match(/^\s*$/) || []).length > 0;
}
Posted by: Guest on April-23-2021
9

javascript check if null

if (variable === null) { //Executes only if variable is null but not undefined
  //Code here
}

if (variable == null) { //Executes if variable is null OR undefined
  //Code here
}
Posted by: Guest on May-20-2020
13

javascript if string empty

// Test whether strValue is empty or is None
if (strValue) {
    //do something
}
// Test wheter strValue is empty, but not None 
if (strValue === "") {
    //do something
}
Posted by: Guest on May-25-2020
9

javascript null or empty

var myVar=null;

if(myVar === null){
    //I am null;
}

if (typeof myVar === 'undefined'){
    //myVar is undefined
}
Posted by: Guest on August-01-2019
1

js if string not empty

if (!str.length) { ...
Posted by: Guest on February-26-2021
0

javascript check if string is empty

var string = "not empty";
if(string == ""){
  console.log("Please Add");
}
else{
  console.log("You can pass"); // console will log this msg because our string is not empty
}
Posted by: Guest on June-19-2021

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