Methods for outputting information in JavaScript (information confirmation box-Prompt input box-Document Stream output), and javascript input box

Methods for outputting information in JavaScript (information confirmation box-Prompt input box-Document Stream output), and javascript input box

The method for outputting information in js is as follows:

1. Document Stream output

document.write('hello');

2. modal dialog box for the output information prompt box

Window. alert ('content to be displayed output'); or alert ('content to be displayed output'); alert (n );

3. Information confirmation box

Var f = window. confirm ('Do you want to enter xinlang net'); confirm (""); if (f) {location. href = 'HTTP: // www.sina.com.cn ';}

4. Prompt input box

Window. promptvar n = window. prompt ('enter your age', 18); if (n> = 18) {document. write ('Welcome young people ');}

5. control tags and output them directly on tags,

You can use document. getElementById ('id') to find the object tag. You can directly control the value and output it.

SetInterval (function () {document. getElementById ('ttt'). innerHTML = "current time:" + new Date (). toLocaleString () ;}, 1000 );

<Script> document. getElementById ('uname'). value = "Alias Name"; </script>

6. output the information directly to the title.

document.title = "hello";

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