摘要:
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 <script type='text/javascript'> 7 window.onload = f 阅读全文
摘要:
截取字符串的efg var arr = "abcdefg" console.log(arr.substring(4))//从第4位开始截(不包括第四位) } 阅读全文
摘要:
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Document</title> 6 <script type='text/javascript'> 7 window.onload = f 阅读全文