Welcome To Ask or Share your Answers For Others

js判断null,'',undefined,但不包含0的函数有吗？

asked Jan 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

js判断null,'',undefined,但不包含0的函数有吗？

与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…

3.0k views

Welcome To Ask or Share your Answers For Others

1 Answer

answered Jan 24, 2021 by 深蓝 (71.8m points)

var data;

// 两个等号可以判断null和undefined，精简代码
var isEmpty = data == null || data === ''

与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…

...