Created
February 24, 2011 16:11
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inject jQuery code from GET parameters
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// | |
// when this script is inserted in your pages (with jQuery) | |
// you can send a initPage querystring parameter to control the page display | |
// what you send in initPage is executed with jQuery | |
// | |
// eg : send a link to this page, but with some dynamic modifications to someone (form filled...) | |
// | |
// example send : | |
// // this fill an input and check a box on the page | |
// initPage=[{selector:'input#testinput', method:'val',value:'Hello, World'}, {selector:'form[name=form1] input[name=check1]', method:'attr',value:['checked', true]} | |
// | |
// initPage sent param should be correctly url-encoded | |
// | |
/** | |
* | |
* Base64 encode / decode | |
* http://www.webtoolkit.info/ | |
* | |
**/ | |
var Base64={_keyStr:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=",encode:function(input){var output="";var chr1,chr2,chr3,enc1,enc2,enc3,enc4;var i=0;input=Base64._utf8_encode(input);while(i<input.length){chr1=input.charCodeAt(i++);chr2=input.charCodeAt(i++);chr3=input.charCodeAt(i++);enc1=chr1>>2;enc2=((chr1&3)<<4)|(chr2>>4);enc3=((chr2&15)<<2)|(chr3>>6);enc4=chr3&63;if(isNaN(chr2)){enc3=enc4=64;}else if(isNaN(chr3)){enc4=64;} | |
output=output+ | |
this._keyStr.charAt(enc1)+this._keyStr.charAt(enc2)+ | |
this._keyStr.charAt(enc3)+this._keyStr.charAt(enc4);} | |
return output;},decode:function(input){var output="";var chr1,chr2,chr3;var enc1,enc2,enc3,enc4;var i=0;input=input.replace(/[^A-Za-z0-9\+\/\=]/g,"");while(i<input.length){enc1=this._keyStr.indexOf(input.charAt(i++));enc2=this._keyStr.indexOf(input.charAt(i++));enc3=this._keyStr.indexOf(input.charAt(i++));enc4=this._keyStr.indexOf(input.charAt(i++));chr1=(enc1<<2)|(enc2>>4);chr2=((enc2&15)<<4)|(enc3>>2);chr3=((enc3&3)<<6)|enc4;output=output+String.fromCharCode(chr1);if(enc3!=64){output=output+String.fromCharCode(chr2);} | |
if(enc4!=64){output=output+String.fromCharCode(chr3);}} | |
output=Base64._utf8_decode(output);return output;},_utf8_encode:function(string){string=string.replace(/\r\n/g,"\n");var utftext="";for(var n=0;n<string.length;n++){var c=string.charCodeAt(n);if(c<128){utftext+=String.fromCharCode(c);} | |
else if((c>127)&&(c<2048)){utftext+=String.fromCharCode((c>>6)|192);utftext+=String.fromCharCode((c&63)|128);} | |
else{utftext+=String.fromCharCode((c>>12)|224);utftext+=String.fromCharCode(((c>>6)&63)|128);utftext+=String.fromCharCode((c&63)|128);}} | |
return utftext;},_utf8_decode:function(utftext){var string="";var i=0;var c=c1=c2=0;while(i<utftext.length){c=utftext.charCodeAt(i);if(c<128){string+=String.fromCharCode(c);i++;} | |
else if((c>191)&&(c<224)){c2=utftext.charCodeAt(i+1);string+=String.fromCharCode(((c&31)<<6)|(c2&63));i+=2;} | |
else{c2=utftext.charCodeAt(i+1);c3=utftext.charCodeAt(i+2);string+=String.fromCharCode(((c&15)<<12)|((c2&63)<<6)|(c3&63));i+=3;}} | |
return string;}} | |
// querystring parser | |
function gup(name) | |
{name=name.replace(/[\[]/,"\\\[").replace(/[\]]/,"\\\]");var regexS="[\\?&]"+name+"=([^&#]*)";var regex=new RegExp(regexS);var results=regex.exec(window.location.href);if(results==null) | |
return null;else | |
return results[1];} | |
function initPage() { | |
// load given initPage parameter then execute jQuery stuff | |
var inits = JSON.parse( lzw_decode(Base64.decode(gup('initPage'))) ); | |
for (var i=0; i<inits.length; i++) { | |
var action = inits[i]; | |
$( action.selector ).each(function(idnex, element) { | |
var tgt = $(this); | |
if (typeof(action.value) == 'object') { | |
tgt[ action.method ].apply(tgt, action.value ); | |
} | |
else { | |
tgt[ action.method ]( action.value ); | |
} | |
}); | |
} | |
} | |
initPage(); |
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