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 = '<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 20:48:20
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;
};

<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 wellif ( 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 wellif ( level == 0 ) {str += '';}return str;}