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[JS] indexOf()
来源:未知 作者:admin 发表于:2015-03-12 15:04  点击
Function indexOf() return the position of substr from the string.

 It will return -1 if not found.
Range of the return value is from 0 to length - 1 of string.

Example:
<script>
str = "abcd";
alert(str.indexOf('g'));
</script>

Result:
-1

Example:
<script>
str = "abcd";
alert(str.indexOf('a'));
</script>

Result:
0
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