php code to check if variable is null
if(empty($var1)){
echo 'This line is printed, because the $var1 is empty.';
}php code to check if variable is null
if(empty($var1)){
echo 'This line is printed, because the $var1 is empty.';
}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
}empty string in javascript
var s; // undefined
var s = ""; // ""
s.length // 0Copyright © 2021 Codeinu
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