Array in javascript


Posted on 2014-11-24 04:06:03


Debug array in javascript. 

Some times, you want to debug a array in javascipt for development. 

You can see example code behind.

<script>
 
var obj = {
    'row1' : {
        'key1' : 'input1',
        'key2' : 'inpu2'
    },
    'row2' : {
        'key3' : 'input3',
        'key4' : 'input4'
    }
};
 
alert(print_r(obj));  //call it like this
 
function print_r(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 += print_r(value,level+1);
            } else {
                dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
            }
        }
    } else { //Stings/Chars/Numbers etc.
        dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
    }
    return dumped_text;
}
 
</script>