What are the predefined functions in javascript?
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Which built-in method adds one or more elements to the end of an array and returns the new length of the array?
What value does prompt() return if the user clicked the cancel button?
Define event bubbling?
How to add/remove properties to object dynamically in javascript?
What javascript method would convert the string “20” to an integer (on the fly) so “20” + 20 = 40?
What are classes in javascript?
why we use javascript in html ?
Why do we need to declare variables?
What is callback in javascript?
Are javascript variables case sensitive?
How to write hello world on the web page?
How are object properties assigned?