如何判断javascript中参数类型,对象类型。
一般:object.constructor == String ;(String 或者Number 等等 )
特殊:判断一个数组Array
方法1:
Object
.prototype.toString.apply(value) ===
'[object Array]'
方法2:
用jQuery,其实和方法1同。
$.isArray(object);
相关文档:
scrollHeight: 获取对象的滚动高度。
scrollLeft:设置或获取位于对象左边界和窗口中目前可见内容的最左端之间的距离
scrollTop:设置或获取位于对象最顶端和窗口中可见内容的最顶端之间的距离
scrollWidth:获取对象的滚动宽度
offsetHeight:获取对象相对于版面或由父坐标 offsetParent 属性指定的父坐标的高度
offsetL ......
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>javascript</t ......
Optimizing JavaScript code
Authors: Gregory Baker, Software Engineer on GMail & Erik Arvidsson, Software Engineer on Google Chrome
Recommended experience: Working knowledge of JavaScript
Client-side
scripting can make your application dynamic and active, but the
browser's interpretation o ......
keycode 8 = BackSpace BackSpace
keycode 9 = Tab Tab
keycode 12 = Clear
keycode 13 = Enter
keycode 16 = Shift_L
keycode 17 = Control_L
keycode 18 = Alt_L
keycode 19 = Pause
keyc ......
1.javascriptでURLの"?"以降のパラメータを取得:
var query = window.location.search.substring(1);
var pairs = query.split("&");
2.IE浏览器默认的功能停止
(Tab键在地址栏等中的移动停止)
function stopDefaultKey(){
window.e ......