是一个字符串拼接的函数,结果放到sentchangenum中。
解决方案 »
- javascript流星雨,3D玫瑰,超链接下划线,导航特殊效果
- js调用函数问题
- 求助!!html页面采用js发email实例
- 像google一样,搜索之后在下面显示内容,怎么实现,谢谢。
- 网页中是否存在 ".document.forms[0].item[n].value"这样的表达式,
- 致力于java学习!请同胞们介绍一些下载介绍HTML语言和网页脚本语言的网站!不胜感激!!!
- 得不到表单中的值,怎么办?
- javascript中哪个事件可以捕捉到页面鼠标的移动,按下和放开
- sunbeamy(阳光灿烂的深夜) 请进
- java的冬天
- 这样的情况,如果控制图片高宽。
- !!!!!!!请教 方法 加括号的问题,谢谢!!!!!!!!
String.fromCharCode(num1,..........,numN)This method takes the specified Unicode values and returns a string (but not a String object). Note that this method is a static method of String. Therefore, it is not used as a method of a String object that you have created. The syntax is always String.fromCharCode() as opposed to myStringObject.fromCharCode().The following code takes the specified Unicode values and writes the resulting string to the document.Code:
document.write (String.fromCharCode(67,65,66))Output:
CABMETHOD: String::charCodeAt --------------------------------------------------------------------------------
object.charCodeAt(index)This method returns a character's Unicode value from a string by referring to its index within that string. The characters in a string are indexed from left to right with the first character indexed as 0 and the last as String.length - 1.The following code reads a character from the string at the specified index and writes its Unicode value to the document.Code:
myString = new String("charCodeAt method demonstration.")
document.write (myString.charCodeAt(2))Output:
97 code>=65281&&code<65373
这句的意思应该是限定字符的unicode码应该在一定范围内,是什么值我就不清楚了