用js实现计算代码行数的简单方法附代码_javascript技巧

<BR>123456 <BR>789 <BR>

var counter = 0;
var str = abc.value;
for(i=0; i{
if(str.substr(i,1)=="\n")
counter +=1;
}
alert(counter);

转为数组后效率就高了很多：

<BR>123456 <BR>789 <BR>

alert(abc.value.split("\n").length)

<BR>system.println("hello world!") <BR>alert("hello world!"); <BR>messagebox_ok("hello world") <BR>msgbox("hello world!") <BR>

alert("代码总行数："+(abc.value.split("\n").length-1).toString())