js 遍历 object 属性和值的方法

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国外网站上 js 遍历 object 属性和值的方法

function( o, maxLevel, level ) {    if ( typeof level == "undefined" ) {        level = 0;    }    if ( typeof level == "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>';    }    var levelStr = '';    for ( var x = 0; x < level; x++ ) {        levelStr += '    ';    }    if ( maxLevel != 0 && level >= maxLevel ) {        str += levelStr + '...</br>';        return str;    }    for ( var p in o ) {        if ( typeof o[p] == 'string' ) {            str += levelStr +                p + ': ' + o[p] + ' </br>';        } else {            str += levelStr +                p + ': { </br>' + print( o[p], maxLevel, level + 1 ) + levelStr + '}</br>';        }    }    // 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>';    }    return str;};

</pre><pre code_snippet_id="515740" snippet_file_name="blog_20141111_2_4562501" name="code" class="html">20:48:20烟飞烟散 2014/11/11 20:48:20function printAllObject( o, maxLevel, level ) {    if ( typeof level == "undefined" ) {        level = 0;    }    if ( typeof level == "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 = '';    }    var levelStr = '';    for ( var x = 0; x < level; x++ ) {        levelStr += ' ';    }    if ( maxLevel != 0 && level >= maxLevel ) {        str += levelStr + '...';        return str;    }    for ( var p in o ) {        if ( typeof o[p] == 'string' ) {            str += levelStr +                p + ':' + o[p] + '';        } else {            str += levelStr +                p + ': { ' + printAllObject( o[p], maxLevel, level + 1 ) + levelStr + '}';        }    }    // 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 += '';    }    return str;};

<pre name="code" class="javascript">function printAllObject( o, maxLevel, level ) {    if ( typeof level == "undefined" ) {        level = 0;    }    if ( typeof level == "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 = '';    }    var levelStr = '';    for ( var x = 0; x < level; x++ ) {        levelStr += '    ';    }    if ( maxLevel != 0 && level >= maxLevel ) {        str += levelStr + '\n';        return str;    }    for ( var p in o ) {        if ( typeof o[p] == 'string' ) {            str += levelStr +                p + ': ' + o[p] + ' \n';        } else {            str += levelStr +                p + ': { </br>' + print( o[p], maxLevel, level + 1 ) + levelStr + '}\n';        }    }    // 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 += '';    }    return str;  }

来自：http://stackoverflow.com/questions/957537/how-can-i-print-a-javascript-object

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