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Hca*_*tek 3 javascript string parsing substring

我有一个字符串"2500 - SomeValue".如何删除'SomeValue'中'S'之前的所有内容?

var x = "2500 - SomeValue";
var y = x.substring(x.lastIndexOf(" - "),
// this is where I'm stuck, I need the rest of the string starting from here. 
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谢谢你的帮助.

〜CK

Mat*_*ley 7

将3(长度" - ")添加到最后一个索引,并取消第二个参数.将一个参数传递给substring时的默认值是转到字符串的末尾

var y = x.substring(x.lastIndexOf(" - ") + 3);
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