gracefullight

/* 
  @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++) {

gracefullight

<!-- 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',

gracefullight

var totalCount;
var currentPageNum;
var shownRowNum;

for(var i=0, len=data.length; i<len; i++){
    var index = (Number(totalCount)-(i+(currentPageNum-1)*shownRowNum))
    
}

gracefullight

<script>
function test(){
    if(true){
        return false;
    }
}
</script>
 
<!-- 페이지에 return false;가 출력됨 -->
<a href='javascript:test();'>테스트</a>

gracefullight

// JavaScript syntax to set a default value
var text = someString || "default text";
var text2 = someString || someString2 || "default text2";

gracefullight

var frozenObject = {
    value1 : 1,
    value2 : 2
};
 
Object.freeze(frozenObject);
console.log(Object.isFrozen(frozenObject)); // true
 
// 삭제 불가
delete frozenObject.value1;

gracefullight

var sealedObject = {
    value1 : 1,
    value2 : 2
};
 
Object.seal(sealedObject);
console.log(Object.isSealed(sealedObject)); // true
 
// 삭제 불가
delete sealedObject.value1;

gracefullight

var preventExtensionObject = {
    value1 : 1,
    value2 : 2
};
 
Object.preventExtensions(preventExtensionObject);
console.log(Object.isExtensible(preventExtensionObject)); // false
 
// 삭제 가능
delete preventExtensionObject.value1;

gracefullight

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;
        }

gracefullight

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);