Definition and Usage
定义与用法

The search() method is used to search a string for a specified value.
search()方法用于从字符串中寻找指定值的位置

Syntax
语法

stringObject.search(searchstring)

Tips and Notes
注意

Note: search() is case sensitive.
注意：search()是一个精确匹配

Note: The search() method returns the position of the specified value in the string. If no match was found it returns -1.
注意：search()方法返回的是指定字符串在字符串中的位置，如果没有匹配字符串则返回 -1

Example 1 - Standard Search
实例1 - 标准查找

In the following example we will search for the word "W3Schools":
在下面的例中，我们将查找”RuanChen“：

<script type="text/javascript">

var str="欢迎来到RuanChen"
document.write(str.search(/RuanChen/))

</script>

The output of the code above will be:
输出结果为：

4

Note: In the following example the word "w3schools" will not be found (because the search() method is case sensitive):
注意：在下面的例子中将无法找到"RuanChen"（search()方法是精确匹配的）

<script type="text/javascript">

var str="欢迎来到RuanChen"
document.write(str.search(/RuanChen/))

</script>

The output of the code above will be:
返回结果为：

-1

Example 2 - Case-insensitive Search
实例 2 - 模糊查找

In the following example we will perform a case-insensitive search:
在下面的例子中，我们将演示一个模糊查找：

<script type="text/javascript">

var str="欢迎来到RuanChen"
document.write(str.search(/RuanChen/i))

</script>

The output of the code above will be:
返回的结果为：

4

Try-It-Yourself Demos
互动演练

search()
How to use search() to search a string for a specified value.
如何用search()来查找一个指定的值

search() Case-insensitive search
How to use search() to search a string for a specified value.
如何用search()进行模糊查找

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