js 遍历 object 属性和值的方法

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 = '
';
    }

    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 + ': { 
' + print( 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;
};

20:48:20
烟飞烟散 2014/11/11 20:48:20
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 + '...';
        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;
};

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 + ': { 
' + 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