js字符串倒序的实例代码

var reverse = function( str ){
var newStr = \'\', i = str.length;
for(; i >= 0; i--) {
newStr += str.charAt(i);
}
return newStr;
};
reverse(\'abcde\')

var reverse = function( str ){
return str.split(\'\').reverse().join(\'\');
};

var reverse = function( str ){
var stack = [];//生成一个栈
for(var len = str.length,i=len;i>=0;i-- ){
stack.push(str[i]);
}
return stack.join(\'\');
};