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[英] 大部分 Web 开发者不知道的 Hack 技巧

Some answers to my own question :)

You can quickly run HTML in the browser without creating a HTML file:

Enter this in the address bar:

data:text/html,<h1>Hello, world!</h1>

(This won't work in IE)

You can make a page's CSS editable in the browser without using JS :

<!DOCTYPE html>

<html>

<body>

<style style="display:block" contentEditable>

body { color: blue }

</style>

</body>

</html>

(This also won't work in IE)

You can have the browser parse a URL for you like this:

var a = document.createElement('a');

a.href = url;

// any property of window.location works here:

document.write('The hostname of ' + url + ' is ' + a.hostname);

(Works in all major browsers)

You can invalidate a URL in the browser's cache by sending a PUT method xmlhttprequest to it:

var xhr = window.XMLHttpRequest ?

    new XMLHttpRequest() :

    new ActiveXObject('Microsoft.XMLHTTP');

xhr.open('PUT', url);

xhr.send(null);

(Works in all major browsers)

You can put multiple statements in an

if

block without using curly bracketslike this:

if (confirm("Do you wish to see two alerts?"))

  alert(1), alert(2);

(Works in all major browsers)

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