javascript regex check if string is empty
function IsEmptyOrWhiteSpace(str) {
return (str.match(/^\s*$/) || []).length > 0;
}javascript regex check if string is empty
function IsEmptyOrWhiteSpace(str) {
return (str.match(/^\s*$/) || []).length > 0;
}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
}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
}javascript null or empty
var myVar=null;
if(myVar === null){
//I am null;
}
if (typeof myVar === 'undefined'){
//myVar is undefined
}js if string not empty
if (!str.length) { ...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
}Copyright © 2021 Codeinu
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