Home >Web Front-end >JS Tutorial >JavaScript implements the number function of PHP print_r (three methods)_javascript skills

JavaScript implements the number function of PHP print_r (three methods)_javascript skills

WBOY
WBOYOriginal
2016-05-16 17:15:511473browse

方法一

复制代码 代码如下:

function print_r(theObj) {
    var retStr = '';
    if (typeof theObj == 'object') {
        retStr = '
';
        for (var p in theObj) {
            if (typeof theObj[p] == 'object') {
                retStr = '
[' p '] => ' typeof(theObj) '
';
                retStr = '
' print_r(theObj[p]) '
';
            } else {
                retStr = '
[' p '] => ' theObj[p] '
';
            }
        }
        retStr = '
';
    }
    return retStr;
}

方法二
复制代码 代码如下:

$(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(4*(depth 1) 1).join(' ');
    var indentNextTwo = new Array(4*(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':
   default:
     for(var key in o) {
    tmp = indentNextTwo '[' key '] = ';
    tmp = print_r(o[key], (depth 1));
     }
    }
    result = type "n";
    result = indentNext '(' "n";
    result = tmp;
    result = indentNext ')' "n";
    return result;
  };
  alert(print_r(json));
   }(json));
 });
});

方法三
复制代码 代码如下:

print_r:function(theObj) {
 var retStr = '';
 if (typeof theObj == 'object'||typeof theObj == 'array') {
  retStr = '
';
  for (var p in theObj) {
   if (typeof theObj[p] == 'object' || typeof theObj[p] == 'array') {
    retStr = '
[' p '] => ' typeof(theObj) '
';
    retStr = '
' XFUPLOAD.Tools.print_r(theObj[p]) '
';
   } else {
    retStr = '
[' p '] => ' theObj[p] '
';
   }
  }
  retStr = '
';
 }
 $("body").append(retStr);
}
Statement:
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn