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/* | |
@author http://www.shamasis.net/2009/09/fast-algorithm-to-find-unique-items-in-javascript-array/ | |
*/ | |
// prototype | |
Array.prototype.unique = function() { | |
var o = {}, i, r = []; | |
var l = this.length; | |
for (i = 0; i < l; i++) { |
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<!-- 세션을 만들어줄 서버에서 P3P 헤더를 설정 --> | |
<?php | |
header('P3P: CP="CAO PSA OUR"'); | |
?> | |
<!-- 세션을 가지고 오는 클라이언트 요청--> | |
<script> | |
$.ajax({ | |
url:'cross domain session create url', | |
type:'post', |
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var totalCount; | |
var currentPageNum; | |
var shownRowNum; | |
for(var i=0, len=data.length; i<len; i++){ | |
var index = (Number(totalCount)-(i+(currentPageNum-1)*shownRowNum)) | |
} |
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<script> | |
function test(){ | |
if(true){ | |
return false; | |
} | |
} | |
</script> | |
<!-- 페이지에 return false;가 출력됨 --> | |
<a href='javascript:test();'>테스트</a> |
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// JavaScript syntax to set a default value | |
var text = someString || "default text"; | |
var text2 = someString || someString2 || "default text2"; |
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var frozenObject = { | |
value1 : 1, | |
value2 : 2 | |
}; | |
Object.freeze(frozenObject); | |
console.log(Object.isFrozen(frozenObject)); // true | |
// 삭제 불가 | |
delete frozenObject.value1; |
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var sealedObject = { | |
value1 : 1, | |
value2 : 2 | |
}; | |
Object.seal(sealedObject); | |
console.log(Object.isSealed(sealedObject)); // true | |
// 삭제 불가 | |
delete sealedObject.value1; |
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var preventExtensionObject = { | |
value1 : 1, | |
value2 : 2 | |
}; | |
Object.preventExtensions(preventExtensionObject); | |
console.log(Object.isExtensible(preventExtensionObject)); // false | |
// 삭제 가능 | |
delete preventExtensionObject.value1; |
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function deepFreeze(obj){ | |
if (!Object.isFrozen(obj)){ | |
Object.freeze(obj); | |
} | |
for (var key in obj) { | |
if ({}.hasOwnProperty.call(obj, key) || !(typeof obj[key] === 'function' || typeof obj[key] === 'object' && !!obj[key])) { | |
continue; | |
} |
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function jsonp(url, callback) { | |
var callbackName = 'jsonp_' + Math.round(100000 * Math.random()); | |
window[callbackName] = function(data) { | |
delete window[callbackName]; | |
document.body.removeChild(script); | |
callback(data); | |
}; | |
var script = document.createElement('script'); | |
script.src = url + (url.indexOf('?') >= 0 ? '&' : '?') + 'callback=' + callbackName; | |
document.body.appendChild(script); |