js实现a_b变成A B的两种方法

1.var key = 'a_b';

var a = key.replace(/\b.|_./g, function (i) {
if (i.length === 2) {
i = ' ' + i[1];
}
return i.toUpperCase();
});

 

2.先去除下划线，再将首字母大写，再用substring方法，最后用join,like this:

var array = key.split('_');

for (var i = 0; i < array.length; i++) {
array[i] = array[i][0].toUpperCase() + array[i].substring(1, array[i].length);
}
var servertype = array.join(' ');

转载于:https://www.cnblogs.com/family-626-77/p/6343246.html