删除Javascript中字符串的第一个字符

尝试

s.replace(/^0/,'')

console.log("0string  =>", "0string".replace(/^0/,'') );
console.log("00string =>", "00string".replace(/^0/,'') );
console.log("string00 =>", "string00".replace(/^0/,'') );

//---- remove first and last char of str    
str = str.substring(1,((keyw.length)-1));

//---- remove only first char    
str = str.substring(1,(keyw.length));

//---- remove only last char    
str = str.substring(0,(keyw.length));

您可以使用substring方法：

let a = "My test string";

a = a.substring(1);

console.log(a); // y test string

剥离所有前导0s 的最简单方法是：

var s = "00test";
s = s.replace(/^0+/, "");

0正如问题所暗示的，如果仅剥离单个前导字符，则可以使用

s = s.replace(/^0/, "");

var s = "0test";
if(s.substr(0,1) == "0") {
    s = s.substr(1);
}

对于所有0s：http : //jsfiddle.net/An4MY/

String.prototype.ltrim0 = function() {
 return this.replace(/^[0]+/,"");
}
var s = "0000test".ltrim0();