JavaScript knowledge Accumulation

1, the principle of event delegation
With event bubbling, the event is bound to the parent element, and the parent element triggers the event when the child element is clicked.

2, JS short-circuit operation
Shorthand for conditional statements
For example: if (a >=6) {
Alert ("Hello");
}
can be simplified into:
A >= 6 && alert ("Hello");

3. Get the last day of a month
New Date (2016,12,0)

4, json.stringify (value)
Value, input object, such as array, class, etc.
Convert an object to a string type
For example:

var student = new Object ();

Student.name = "Lanny";

Student.age = "25";

student.location = "China";

var json = json.stringify (student);

Console.log (student);

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JavaScript knowledge Accumulation