console.log

I need for some debugging to see the original order of one JavaScript object's properties but (at least in chrome devtools) console.log() shows me an alphabetically ordered object. Ex: var obj = { z: 1, t: 2, y: 3, a: 4, n: 5, k: 6 } console.log(obj) shows this: Object {z: 1, t: 2, y: 3, a: 4, n: 5…} a:4 k:6 n:5 t:2 y:3 z:1 //expected (needed ) original order z: 1 t: 2 y: 3 a: 4 n: 5 k: 6 georg console.log does indeed sort the properties, in some cases you can use JSON.stringify which preserves the order, e.g. console.log(JSON.stringify(obj, null /*replacer function */, 4 /* space */)) NB:

As per this documentation , The string representations of each of these objects are appended together in the order listed and output. Also as per answer The + x coerces the object x into a string, which is just [object Object]: So, my question is If I do str = new String("hello") console.log(str) //prints the string object but not 'hello' console.log(""+str) //prints "hello" So, in first case, it simply prints the object (doesn't invoke the toString() method). But in second case, it doesn't coerce but simply print the primitive value. Why is that so? Which method does console.log invokes to

Do all browsers support this? I would like to output an error using console.log() but was wondering if this supported by all browsers? console.log("Error etc"); No, not all browsers support console.log as it is not part of the standard and is an extension of the DOM and thus you should not count on its presence. To make your code resilient you should assume it does not exist and code accordingly. I've done something like this in the past: // Log to native console if possible, alert otherwise window.console = typeof window.console === 'undefined' ? {log:function(/* polymorphic */){alert

For some reason, the prototype framework (or another JavaScript code) that is shipped with Magento is replacing standard console functions, so I can't debug anything. Writing down in JavaScript console console I get the following output: > console Object assert: function () {} count: function () {} debug: function () {} dir: function () {} dirxml: function () {} error: function () {} group: function () {} groupEnd: function () {} info: function () {} log: function () {} profile: function () {} profileEnd: function () {} time: function () {} timeEnd: function () {} trace: function () {} warn:

Is there a method for printing to the console without a trailing newline? The console object documentation doesn't say anything regarding that: console.log() Prints to stdout with newline. This function can take multiple arguments in a printf() -like way. Example: console.log('count: %d', count); If formating elements are not found in the first string then util.inspect is used on each argument. onteria_ You can use process.stdout.write() : process.stdout.write("hello: "); See the docs for details . Also, if you want to overwrite messages in the same line, for instance in a countdown, you could