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这个是开域语句, 表示在with语句中的任何表达式的所属对象或者是类都由with后紧跟的变量所代表 阅读全文
posted @ 2010-07-06 15:31
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var str="Is this all there is?";var patt1=/is/g;1. match str.match(patt1);2. test patt1.test(str);3. exec patt1.exec(str); 阅读全文
posted @ 2010-07-06 14:39
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Array Object MethodsMethodDescriptionconcat()Joins two or more arrays, and returns a copy of the joined arraysjoin()Joins all elements of an array into a stringpop()Removes the last element of an arra... 阅读全文
posted @ 2010-07-06 14:21
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document.write("Hello \World!");var a = "aasdf\ddd\ddd"; 阅读全文
posted @ 2010-07-06 14:00
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<script type="text/javascript">var x=prompt("Enter a number between 0 and 10:","");try { if(x>10) { throw "Err1"; } else if(x<0) { throw "Err2"; } else if(isNaN(x)) { throw "Err3"; } }catc... 阅读全文
posted @ 2010-07-06 13:57
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<html><body><script type="text/javascript">var x;var mycars = new Array();mycars[0] = "Saab";mycars[1] = "Volvo";mycars[2] = "BMW";for (x in mycars) { document.write(mycars[x] + "<... 阅读全文
posted @ 2010-07-06 13:36
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1. alert("message")2. var r = confirm("are you sure to continue?"); if(r == true) {...}3. var name = prompt("Please enter your name","Harry Potter"); //prompt("sometext","defaultvalue"); if(name !... 阅读全文
posted @ 2010-07-06 13:29
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In my experience, there are two way to change the browser content.1. document.getElementById(ojbid).innerHTML = "" to change the object content2.document.write("<h1>" + name + "</h1>") to ... 阅读全文
posted @ 2010-07-06 11:44
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In javascript, there is prototype for all function(Class). prototype could be a property or function. All the instance of the function(Class) inherit the property.There is one thing we need to pay att... 阅读全文
posted @ 2010-07-06 11:39
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