JS.string.空_测试
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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <script type="text/javascript" > <!-- window.onload = function() { var str = ""; if (str) console.log("str is not empty ."); else console.log("str is empty ."); console.log(""); str = " "; if (str) console.log("str is not empty ."); else console.log("str is empty ."); }; --> </script> </head> <body> </body> </html>
1.1、Win7x64 chrome(版本 68.0.3440.106 (正式版本) (32 位)) 控制台输出:
test_string_splt.html:16 str is empty . test_string_splt.html:18 test_string_splt.html:22 str is not empty .
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