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JavaScript implementation of JS special effects code operation function

Source: Internet
Author: User
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The principle code is as follows

The code is as follows Copy Code

<script>
function Preview ()
{
var testwin=open (');
TestWin.document.write (Code.value);

}
</script>

The code above is to create a new window, and then put the characters in the specified container on the page to run.

Example

  code is as follows copy code

<!doctype html>
<meta charset= "Utf-8"/>
<script>
window.onload = function ()
{
var otxt = document.getElementById (' Codetext ') ;
var obtn = document.getElementById (' btn ');

Obtn.onclick = function ()
{
var onewwin = window.open (' About:blank ', ' _blank ');//Open blank page in new Window (BOM)
Onewwin . document.write (Otxt.value); Write the value of the input box in a blank page
}

</script>
<body>
<textarea id= "Codetext" rows= "Ten" cols= "></textarea><br"/>
<input id= "btn" type= "button" value= "Run"/> <!-- Only open windows can be closed under FF
</body>

Code Analysis

window.open (' About:blank ', ' _blank '); is to tell us to open a new window without replacing the current window OH
ONewWin.document.write (Otxt.value); Write the value of an input box in a blank page

is to get the contents of our text box and we output it to the new window we created to make it possible for the page to run.

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