Ò׽ؽØͼÈí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

javascript Öеļ̳з½·¨

1.¿ÉÒÔͨ¹ýprototypeÊôÐÔ£¬ÊµÏּ̳з½·¨µÄ·½Ê½£¬ÕâÖÖ·½Ê½¾ÍÊÇjavaÓïÑÔÖм̳еı任ÐÎʽ¡£
 // Create the constructor for a Person object
function Person( name ) {
    this.name = name;
}
// Add a new method to the Person object
Person.prototype.getName = function() {
    return this.name;
};
Person.prototype.setName = function(name) {
    this.name = name;
};
// Create a new User object constructor
function User( name, password ) {
    // Notice that this does not support graceful overloading/inheritance
    // e.g. being able to call the super class constructor
    this.name = name;
    this.password = password;
};
// The User object inherits all of the Person object's methods
User.prototype = new Person();
2.ͨ¹ý×Ô¼ºÐ´¼Ì³Ðº¯Êý£¬ÊµÏּ̳У¬ÏÂÃæÕâ¶Î´úÂëÒ²ºÜºÃ£¬ÖµµÃÒ»¿´
// A simple helper that allows you to bind new functions to the
// prototype of an object
Function.prototype.method = function(name, func) {
    this.prototype[name] = func;
    return this;
};
// A (rather complex) function that allows you to gracefully inherit
// functions from other objects and be able to still call the  'parent'
// object's function
Function.method('inherits', function(parent) {
    // Keep track of how many parent-levels deep we are
    var depth = 0;
    // Inherit the parent's methods
    var proto = this.prototype = new parent();
    // Create a new 'priveledged' function called 'uber', that when called
    // executes any function that has been written over in the inheritance
    this.method('uber', function uber(name) {
        var func; // The function to be execute
        var ret; // The return value of the function
 &n


Ïà¹ØÎĵµ£º

JavaScript×Ö·û´®º¯Êý´óÈ«


JS×Ô´øº¯Êý
concat
½«Á½¸ö»ò¶à¸ö×Ö·ûµÄÎı¾×éºÏÆðÀ´£¬·µ»ØÒ»¸öеÄ×Ö·û´®¡£
var a = "hello";
var b = ",world";
var c = a.concat(b);
alert(c);
//c = "hello,world"
indexOf
·µ»Ø×Ö·û´®ÖÐÒ»¸ö×Ó´®µÚÒ»´¦³öÏÖµÄË÷Òý£¨´Ó×óµ½ÓÒËÑË÷£©¡£Èç¹ûûÓÐÆ¥ÅäÏ·µ»Ø -1 ¡£
var index1 = a.indexOf("l");
//index1 = 2 ......

ÀûÓÃjavascriptÑéÖ¤ÓÊÏäµØÖ·ÊÇ·ñºÏ·¨

Ô´´úÂëÈçÏ£º
<!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>
    <title>ÑéÖ¤ÓÊÏäµØÖ·ºÏ·¨ÐÔ</title>
    <sc ......

JavaScript isNaN() º¯Êý


·µ»Ø JavaScript È«¾Ö¶ÔÏó²Î¿¼ÊÖ²á
¶¨ÒåºÍÓ÷¨
isNaN() º¯ÊýÓÃÓÚ¼ì²éÆä²ÎÊýÊÇ·ñÊÇ·ÇÊý×ÖÖµ¡£
Óï·¨
isNaN(x)
²ÎÊýÃèÊö
x
±ØÐè¡£Òª¼ì²âµÄÖµ¡£
·µ»ØÖµ
Èç¹û x ÊÇÌØÊâµÄ·ÇÊý×ÖÖµ NaN£¨»òÕßÄܱ»×ª»»ÎªÕâÑùµÄÖµ£©£¬·µ»ØµÄÖµ¾ÍÊÇ true¡£Èç¹û x ÊÇÆäËûÖµ,Ôò·µ»Ø false¡£
˵Ã÷
isNaN() º¯Êý¿ÉÓÃÓÚÅжÏÆä²ÎÊýÊÇ·ñÊÇ NaN£ ......

JavaScript ÑÕÉ«ÌݶȺͽ¥±äЧ¹û

ʵÀýЧ¹û
Ô¤ÀÀЧ¹û1£º
ÕâÊÇÒ»¸öÑÕÉ«Ìݶȱ仯ÑÝʾ£º
Ô¤ÀÀЧ¹û2£º
Ò»¸öÑÕÉ«½¥±äµÄ²Ëµ¥£º
Cropper
Tween
Slider
Resize
Drag
Ô¤ÀÀЧ¹û3£º
ÑÕÉ«½¥±äµÄÓÐȤӦÓ㬵ã»÷Ëæ»úÑÕÉ«½¥±ä£º
µã»÷Ëæ»ú»»ÑÕÉ«
³ÌÐò˵Ã÷
¡¾ColorGradsÑÕÉ«Ìݶȡ¿
³ÌÐòColorGradsµÄ×÷ÓÃÊÇͨ¹ýStartColorºÍEndColorÉú³ÉÑÕÉ«Ìݶȼ¯ºÏ¡£
ÑÕÉ«¶¼¿ ......

javascriptÖеijÉÔ±º¯Êýµ÷ÓõÄÒ»¸öСÎÊÌâ

Ê×ÏÈ¿´demo´úÂ룺
var student={
name:"leo",
intro:function(){
alert("my name is "+this.name);
}
}
var teacher=function(f){
f();
}
teacher(student.intro); 
ÔÚÉÏÃæµÄdemo£¬¿ÉÒÔ¿´µ½ÏÔʽµÄ¶¨ÒåÁËÒ»¸ö¶ÔÏóstudent£¬ÓÐÒ»¸ö³ÉÔ±º¯ÊýintroºÍÒ»¸ö³ÉÔ±±äÁ¿¡£
ÁíÍⶨÒåÁËÒ»¸öº¯Êýteacher£¬½ÓÊ ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØͼ | ¸ÓICP±¸09004571ºÅ