如何以字符串格式显示JavaScript对象的内容,就像我们警告变量时一样?

与显示对象的格式相同。


当前回答

假设对象obj={0:'John',1:'Foo',2:'Bar'}

打印对象的内容

for (var i in obj){
    console.log(obj[i], i);
}

控制台输出(Chrome DevTools):

John 0
Foo 1
Bar 2

希望这有帮助!

其他回答

正如之前所说,我发现的最简单的方法是

var getPrintObject=function(object)
{
    return JSON.stringify(object);
}

pagewils代码的另一个修改。。。他不打印字符串以外的任何内容,并将数字和布尔字段留空,我修复了megaboss创建的函数内部第二种类型的拼写错误。

var print = function( o, maxLevel, level )
{
    if ( typeof level == "undefined" )
    {
        level = 0;
    }
    if ( typeof maxlevel == "undefined" )
    {
        maxLevel = 0;
    }

    var str = '';
    // Remove this if you don't want the pre tag, but make sure to remove
    // the close pre tag on the bottom as well
    if ( level == 0 )
    {
        str = '<pre>';   // can also be <pre>
    }

    var levelStr = '<br>';
    for ( var x = 0; x < level; x++ )
    {
        levelStr += '    ';   // all those spaces only work with <pre>
    }

    if ( maxLevel != 0 && level >= maxLevel )
    {
        str += levelStr + '...<br>';
        return str;
    }

    for ( var p in o )
    {
        switch(typeof o[p])
        {
          case 'string':
          case 'number':    // .tostring() gets automatically applied
          case 'boolean':   // ditto
            str += levelStr + p + ': ' + o[p] + ' <br>';
            break;

          case 'object':    // this is where we become recursive
          default:
            str += levelStr + p + ': [ <br>' + print( o[p], maxLevel, level + 1 ) + levelStr + ']</br>';
            break;
        }
    }

    // Remove this if you don't want the pre tag, but make sure to remove
    // the open pre tag on the top as well
    if ( level == 0 )
    {
        str += '</pre>';   // also can be </pre>
    }
    return str;
};

Javascript函数

<script type="text/javascript">
    function print_r(theObj){ 
       if(theObj.constructor == Array || theObj.constructor == Object){ 
          document.write("<ul>") 
          for(var p in theObj){ 
             if(theObj[p].constructor == Array || theObj[p].constructor == Object){ 
                document.write("<li>["+p+"] => "+typeof(theObj)+"</li>"); 
                document.write("<ul>") 
                print_r(theObj[p]); 
                document.write("</ul>") 
             } else { 
                document.write("<li>["+p+"] => "+theObj[p]+"</li>"); 
             } 
          } 
          document.write("</ul>") 
       } 
    } 
</script>

正在打印对象

<script type="text/javascript">
print_r(JAVACRIPT_ARRAY_OR_OBJECT);
</script> 

通过Javascript中的print_r

我总是使用console.log(“对象将是:”,obj,obj1)。这样我就不需要用JSON来解决字符串问题。对象的所有财产都将很好地展开。

如果要打印对象的全长,可以使用

console.log(require('util').inspect(obj,{showHidden:false,depth:null})

如果要通过将对象转换为字符串来打印该对象,则

console.log(JSON.stringify(obj));