Hi All,
Is there any advantage to testing the availability of styling before running
scripts?
The scenario I'm thinking of is JS available but no CSS, either unavailable or
switched off.
Something like:
var cssOn;
var gotStyle=function(){
function init(){
// Simon Willisons - http://simonwillison.net/2004/May/26/addLoadEvent/
function addLoadEvent(f){var o=window.onload;if(typeof
window.onload!='function'){window.onload=f;}else{window.onload=function(){if(o){o();}f();};}}
// mike foskett -
http://websemantics.co.uk/resources/useful_javascript_functions/
function hasCSS(){var
d=document.createElement('div');d.id="hasCSS";document.body.appendChild(d);var
o=document.getElementById("hasCSS"),v=false;if(window.getComputedStyle){v=(window.getComputedStyle(o,null).getPropertyValue('display')==='none');}else{if(o.currentStyle){v=(o.currentStyle.display==='none');}}document.body.removeChild(d);return
v;}
addLoadEvent(function(){
cssOn=hasCSS();
});
}
return{
init:init
};
}();
gotStyle.init();
In the CSS:
#hasCSS {display:none}
The above:
1. waits for page load
2. appends a test element
3. applies a style to it
4. tests for the applied style
5. sets the global variable accordingly
6. removes the test element
Regards,
Mike
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