从结尾或开头修剪字符串

Question

I have a String in JavaScript. Say var val = %Hello; or sometimes var val = Hello%; I need to trim '%' from the String to get Hello . How to do this in javascript?

Answer 1

Simply replace the % character with a blank string.

var val = "%Hello";
val = val.replace('%', '');
alert(val); //alerts "Hello"

---

var val = "Hello%";
val = val.replace('%', '');
alert(val); //alerts "Hello"

Answer 2

var val = "%Hello%";
val = val.replace('%', '');

Answer 3

If I got you well,

var val = "%Hello"
var reg= new RegExp ("%");
val = val.replace (reg, "");

should work. (I call regexp to show you the good way if you show up with more complicate examples). But

var val = "%Hello";
val = val.replace ("%", "");

will be faster.

Answer 4

val = 'Whatever%'; //or %Whatever
val.replace('%', '');
var finalstring = val.replace(/^\s+|\s+$/g,''); //trimming