Examples of six interactive methods commonly used in JavaScript_javascript skills

1.confirm message dialog box

Syntax: confirm("str");

Parameter description: str is the text to be displayed in the dialog box,

Function: It is usually used to remind the user to make certain choices. The return value is a Boolean type. Click to confirm and the return value is true. Click to cancel and the return value is false

For example:

Copy code The code is as follows:

2.prompt message dialog box

Syntax: prompt("str1","str2");

Parameter description: str1 is the text to be displayed in the dialog box and cannot be modified; str2 is the content in the text box and can be modified

Function: Pop up a dialog box to ask for information about interacting with the user

For example:

Copy code The code is as follows:

var myname=prompt("Please enter your name:");
if(myname!=null)
{ alert("Hello" myname); }
else
{ alert("Hello my friend."); }

3.window.openopen new window

Syntax: window.open('str1','str2','str3');

Parameter description: str1 is the address of the window to be opened; str2 is the name of the window to be opened; str3 is the parameter to control the window

Function: Open a new window

For example:

Copy code The code is as follows:

4.window.closeClose new window

Syntax: window.close('str'); or .close();

Parameter description: str is the address of the open window

For example:

Copy code The code is as follows:

5.alert warning

Syntax: alert("str");//note the double quotes

Parameter description: str is the content of the dialog box pop-up

For example:

Copy code The code is as follows:

6.document.write output content

Syntax: document.write("str")

Function: Output text str

For example:

Copy code The code is as follows:

The above six points are all the content shared with you in this article. I hope you will like it.