Javascript的每個Function對象中有一個apply方法:Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->function.apply([thisObj[,argArray]])此外,還有另一個很極之相似方法:Code highlighting produced by Actipro CodeHighlighter
Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->/* * 用來遍曆指定對象所有的屬性名稱和值 * obj 需要遍曆的對象 */ function allPrpos(obj) { // 用來儲存所有的屬性名稱和值 var props = ""; // 開始遍曆 for(var p in obj){
格式化function formatNumber (num, decplaces) { // convert in case it arrives as a string value num = parseFloat(num); // make sure it passes conversion if (!isNaN(num)) { // multiply value by 10 to the decplaces power; //
JavaScript記憶體流失 1、什麼是閉包、以及閉包所涉及的範圍鏈這裡就不說了。2、JavaScript記憶體回收機制 JavaScript不需要手動地釋放記憶體,它使用一種自動記憶體回收機制(garbage collection)。當一個對象無用的時候,即程式中無變數引用這個對象時,就會從記憶體中釋放掉這個變數。Code var s = [ 1, 2 ,3]; var s = null; //這樣原始的數組[1 ,2 ,3]就會被釋放掉了。3、循環參考
Using Javascript to display RSSI have written about using Javascript to display RSS previously. It seems people are still interested in the subject so I thought I would revisit the subject.Javascript and RSSFirst of I need to let you know that