Javascript empty
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Example 1
Running
1.empty(null);
Could return
1.true
Example 2
Running
1.empty(undefined);
Could return
1.true
Depe
function empty( mixed_var ) {
// !No description available for empty. @php.js developers: Please update the function summary text file.
//
// version: 812.316
// discuss at: http://phpjs.org/functions/empty
// + original by: Philippe Baumann
// + input by: Onno Marsman
// + bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
// + input by: LH
// + improved by: Onno Marsman
// + improved by: Francesco
// * example 1: empty(null);
// * returns 1: true
// * example 2: empty(undefined);
// * returns 2: true
// * example 3: empty([]);
// * returns 3: true
// * example 4: empty({});
// * returns 4: true
var key;
if (mixed_var === ""
|| mixed_var === 0
|| mixed_var === "0"
|| mixed_var === null
|| mixed_var === false
|| mixed_var === undefined
){
return true;
}
if (typeof mixed_var == 'object') {
for (key in mixed_var) {
if (typeof mixed_var[key] !== 'function' ) {
return false;
}
}
return true;
}
return false;
}
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