console.log

I have the following code: var myLog = console.log.bind(console, '[DEBUG]'); Which works find when I want to log things prepended with [DEBUG] to the console. Now I want to add a date/time to the log and I tried this: var myLog = console.log.bind(console, '[DEBUG ' + (new Date) + ']'); Which obviously does not work because it always logs the same time (the time that the .bind was called). Is there any way (using .bind ) to log the current time on each log without having to do this: var myLog = function(){ var args = ['[DEBUG ' + (new Date) + ']']; for(var i = 0; i < arguments.length; ++i) {

This question already has an answer here: What are the rules for JavaScript's automatic semicolon insertion (ASI)? 5 answers I have two function of same return type in java script but return type is difference. The using code of snipped id below function foo1() { return { bar: "hello" }; } function foo2() { return { bar: "hello" }; } calling the function.. console.log("foo1 returns:"); console.log(foo1()); console.log("foo2 returns:"); console.log(foo2()); Output the result .... foo1 returns: Object {bar: "hello"} foo2 returns: undefined That's because JavaScript interprets return { bar:

This question already has an answer here: Chrome/Firefox console.log always appends a line saying undefined 6 answers console.log("hi") gives undefined hi console.log(1+1) gives undefined 2 Whether it's a string or integer calculation, I get undefined then the correct answer. Why do I get the undefined message? Is there a good way to avoid it? The console will print the result of evaluating an expression. The result of evaluating console.log() is undefined since console.log does not explicitly return something. It has the side effect of printing to the console. You can observe the same

What are the instances when you would use console.log and return in javascript? I've just started learning javascript and I want to know what are some instances when I'd use them? From http://blogs.msdn.com/b/cdndevs/archive/2011/05/26/console-log-say-goodbye-to-javascript-alerts-for-debugging.aspx console.log will display the parameter passed to the log method in the console window. Use this method to display a string or variable in the console window. You can use the console class in your code as well, much like we can use JavaScript alerts. <script type = "text/javascript"> function