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December 16, 2015 21:38
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This will dump an object, skip functions and objects starting with DOM or HTM
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function dumpObject(root, indent){ | |
if(indent == null) indent = " "; | |
function toType(obj) { | |
return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1]; | |
} | |
var queue = [{ data: root, level: 0 }]; | |
function add(data, level, prepend) { | |
queue.push({data: data, level: level, prepend: prepend}); | |
} | |
function toString(obj, level) { | |
var type = typeof(obj); | |
switch(type) { | |
case 'undefined': | |
case 'function': | |
return 'function() {...}'; | |
case 'object': | |
var objectType = toType(obj); | |
switch(objectType) { | |
case 'Null': | |
case 'Date': | |
case 'Boolean': | |
case 'Error': | |
case 'Math': | |
case 'Number': | |
case 'String': | |
return obj; | |
case 'Array': | |
var newLevel = level + 1; | |
obj.reverse().forEach(function(value, index) { | |
add(value, newLevel, index + ": "); | |
}); | |
return '[...'; | |
default: | |
var startsWith = objectType.substring(0, 3); | |
switch(startsWith) { | |
case 'DOM': | |
case 'HTM': | |
return objectType + ' {...}'; | |
} | |
var newLevel = level + 1; | |
Object.keys(obj).reverse().forEach(function(key) { | |
add(obj[key], newLevel, key + ": "); | |
}); | |
return '{...'; | |
} | |
break; | |
case 'number': | |
case 'boolean': | |
case 'string': | |
return obj; | |
default: | |
console.log("Unhandled " + type + ": " + objectType); | |
break; | |
} | |
return; | |
} | |
var out = ''; | |
while(queue.length > 0) { | |
var node = queue.pop(); | |
var str = toString(node.data, node.level); | |
if(typeof(str) === 'undefined') continue; | |
if(node.prepend != null) str = node.prepend + str; | |
for (var i = 0; i < node.level; i++) { | |
str = indent + str | |
}; | |
out += str + "\n"; | |
} | |
return out; | |
} | |
function testStringify(obj) { | |
try { | |
dumpObject(obj); | |
} catch(e) { | |
console.log(e.stack); | |
debugger; | |
} | |
} | |
function testDownloadBlob(obj) { | |
var blob = new Blob([dumpObject(obj)], {type: 'text/plain'}); | |
window.open(URL.createObjectURL(blob), '_blank', ''); | |
} |
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