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Javascript > +号的秒用~ 上一篇 | 下一篇
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js, parseInt, parseFloat, +, plus
JS中通常把一个字符串转为数字 用 parseInt, parseFloat.
其实更简单的是用 +号~
比如 a = "1", b = "1.1"
转为数字可以用 aa = +a; bb = +b;
<script type="text/javascript">
a = "1", b = "1.1";
aa = +a; bb = +b;
document.write( [ a, aa, aa === 1], '<hr />' );
document.write( [ b, bb, bb === 1.1], '<hr />' );
</script>
@suches
http://btbtd.com/mods/blog/item.php?uid=1&item=4982
http://btbtd.com/mods/blog/item.php?uid=1&item=4982
发表于 @ 2013-01-10 06:27:41