javascript string null or empty code example
Example 1: js if string not empty
if (!str.length) { ...
Example 2: javascript check for null variables
var myVar=null;
if(myVar === null){
}
if (typeof myVar === 'undefined'){
}
Example 3: javascript if string empty
if (strValue) {
}
if (strValue === "") {
}
Example 4: empty string in javascript
var s;
var s = "";
s.length
Example 5: javascript check if empty
if (typeof myVar === 'undefined'){
console.log("I am not defined");
}
var emptyString="";
if (emptyString) {
console.log("im not empty");
}