Download console. CodeProject interviews Anders console. Hejlsberg andconsole. When comparing complex objects, they are equal only when they reference the same object i. Two variables containing identical objects are not equal to each other since they do not actually point at the same object.
The program will stop executing code where the debugger keyword is applied in the program. Weakmap is similar to a collection of objects like a map. If the weak map object is set to a process, it considers each element as a key object and that key object will have a weak reference.
Number objects help to represent the number of values to the variables. The values may be floating point or integer. Set objects are used to store different values to the elements. The values may be a reference or primitive values.
The navigator. Explain window. The onload function is not run until all the information on the page is loaded. This leads to a substantial delay before any code is executed.
What is the role of break and continue statements? Break statement is used to come out of the current loop while the continue statement continues the current loop with a new recurrence. The code above will clear the existing array by setting its length to 0. This way of emptying the array also updates all the reference variables that point to the original array. The output would be 0. The delete operator is used to delete properties from an object.
Here x is not an object but a local variable. The main difference is the function foo is defined at run-time whereas function bar is defined at parse time. The output would be xyz. Here, emp1 object has company as its prototype property. You can test it console. However, we can delete the company property directly from theEmployee object using delete Employee. The trick of this question is that in the IIFE there are two assignments but the variable a is declared using the keyword var. What this means is that a is a local variable of the function.
On the contrary, b is assigned to the global scope. If strict mode was enabled, the code would raise the error Uncaught ReferenceError: b is not defined. Remember that strict mode requires you to explicitly reference to the global scope if this was the intended behavior.
In general, an anonymous function is inaccessible after its declaration. By default, the parsing of the HTML code, during page loading, is paused until the script has not stopped executing. It means, if the server is slow or the script is particularly heavy, then the webpage is displayed with a delay. This reduces the loading time of web pages and they get displayed faster. There is no scope for validation in innerHTML and, therefore, it is easier to insert rouge code in the document and, thus, make the web page unstable.