31 lines
687 B
JavaScript
31 lines
687 B
JavaScript
var regSpace = /^\s+/;
|
|
exports = function(str, chars) {
|
|
if (chars == null) {
|
|
if (str.trimLeft) {
|
|
return str.trimLeft();
|
|
}
|
|
return str.replace(regSpace, '');
|
|
}
|
|
var start = 0;
|
|
var len = str.length;
|
|
var charLen = chars.length;
|
|
var found = true;
|
|
var i;
|
|
var c;
|
|
while (found && start < len) {
|
|
found = false;
|
|
i = -1;
|
|
c = str.charAt(start);
|
|
while (++i < charLen) {
|
|
if (c === chars[i]) {
|
|
found = true;
|
|
start++;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return start >= len ? '' : str.substr(start, len);
|
|
};
|
|
|
|
module.exports = exports;
|