相当于javascript中特定的php preg_replace

Question

JS中这个特定的php preg替换是否等效？

preg_replace('/[\n]{2,}/', "\n", "Hi,\nHow are you?\n\n\nI am just testing");

谢谢！

Answer 1

它基本相同，但你必须提供g标志：

var theString = "Hi,\nHow are you?\n\n\nI am just testing";

theString = theString.replace(/\n{2,}/g, '\n');