PHP print_r Method for JavaScript
PHP offers print_r()
and var_dump()
methods that can print the values of arrays and objects recursively with values indented so it’s easy to debug code. There’s no print_r
for JavaScript but OpenJS has an equivalent function for dumping variables in a structured format.
function dump(arr, level) {
var dumped_text = '';
if (!level) level = 0;
// The padding given at the beginning of the line.
var level_padding = '';
for (var j = 0; j < level + 1; j++) level_padding += ' ';
if (typeof arr == 'object') {
// Array/Hashes/Objects
for (var item in arr) {
var value = arr[item];
if (typeof value == 'object') {
// If it is an array,
dumped_text += level_padding + "'" + item + "' ...\n";
dumped_text += dump(value, level + 1);
} else {
dumped_text += level_padding + "'" + item + '\' => "' + value + '"\n';
}
}
} else {
// Stings/Chars/Numbers etc.
dumped_text = '===>' + arr + '<===(' + typeof arr + ')';
}
return dumped_text;
}
Amit Agarwal
Google Developer Expert, Google Cloud Champion
Amit Agarwal is a Google Developer Expert in Google Workspace and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India.
Amit has developed several popular Google add-ons including Mail Merge for Gmail and Document Studio. Read more on Lifehacker and YourStory