parseFloat的取值

<script type="text/javascript">

document.write(parseFloat("10"))
document.write(parseFloat("10.00"))
document.write(parseFloat("10.33"))
document.write(parseFloat("34 45 66"))
document.write(parseFloat(" 60 "))
document.write(parseFloat("40 years"))
document.write(parseFloat("He was 40"))

</script>

输出

10
10
10.33
34
60
40
NaN

parseFloat的取值

原文：https://www.cnblogs.com/wuxu/p/10103741.html