function toCamle(str){
var strArr = str.split("-");
var subStr = strArr[0];
for(i = 1, j = strArr.length; i < j; i++){
subStr += strArr[i].substr(0, 1).toUpperCase() + strArr[i].substr(1);
}
return subStr;
}
toCamle("main-left-con") //"mainLeftCon"
原文：http://iicoo.blog.51cto.com/10739372/1738621