Write a PHP Print_r-like function with JavaScript

PHP Print_r function is very useful, can be used to print groups, objects and other structures and data, unfortunately, JavaScript does not provide similar functions of native. But we can try to implement this function on our own, here are some ideas and methods.

Method One Yong Ying meeting casino

function Print_r (theobj) {    var retstr = ';    if (typeof theobj = = ' object ') {        retstr + = ' <div style= "font-family:tahoma; font-size:7pt;" > ';        For (var p in theobj) {            if (typeof theobj[p] = = ' object ') {                retstr + = ' <div><b>[' +p+ '] = = + Typeo F (theobj) + ' </b></div> ';                Retstr + = ' <div style= "padding-left:25px; > ' + print_r (theobj[p]) + ' </div> ';            } else {                Retstr + = ' <div>[' +p+ '] = <b> ' + theobj[p] + ' </b></div> ';            }}        Retstr + = ' </div> ';    }    return RETSTR;}

Method Two

$ (document). Ready (function () {$ (' #btn '). Click (function () {  var jsonstr = $ (' #jsonData '). Val ();  var json = eval (' (' +jsonstr+ ') ');  (function () {var print_r = function (o, depth) {  var result = ';  Depth | | (depth=1);  var indent = new Array (4*depth+1). Join (');  var indentnext = new Array (depth+1) +1. Join (');  var indentnexttwo = new Array (depth+2) +1. Join (');  var tmp = ';  var type = typeof O;  Switch (type) {case ' string ': Case ' number ': Case ' Boolean ': Case ' undefined ': case ' function ':  tmp + = indent + Indentnext + O + "\ n";  Break;case ' object ':d efault:  for (var key in O) {tmp + = indentnexttwo + ' [' + key + '] = '; tmp + = Print_r (O[key], (DEP th+1));  }  }  Result + = type + "\ n";  Result + = Indentnext + ' (' + ' \ n ');  result + = tmp;  Result + = Indentnext + ') ' + ' \ n ';  return result;}; Alert (Print_r (JSON));  } (JSON));});

Method Three

Print_r:function (theobj) {var retstr = '; if (typeof theobj = = ' object ' | | typeof theobj = = ' array ') {retstr + = ' <div style= "font-family:tahoma; font-size:7pt;" > '; for (var p in theobj) {if (typeof theobj[p] = = ' object ' | | typeof theobj[p] = = ' array ') {retstr + = ' <div><b >[' +p+ ' = + ' + typeof (Theobj) + ' </b></div> '; retstr + = ' <div style= ' padding-left:25px; " > ' + xfupload. Tools.print_r (Theobj[p]) + ' </div> ';} else {retstr + = ' <div>[' +p+ '] = <b> ' + theobj[p] + ' </b></div> ';}} Retstr + = ' </div> ';} $ ("Body"). Append (RETSTR);}

Write a PHP Print_r-like function with JavaScript