当前位置: 首页 > 网络学院 > 客户端脚本教程 > JavaScript > JavaScript replace() 方法

JavaScript
JS 介绍
JS 怎样使用
JS 在哪使用
JS 变量
JS If...Else
JS Switch
JS 操作符
JS Popup Boxes
JS 函数
JS For 循环
JS While 循环
JS Break 循环
JS For...In
JS 事件
JS Try...Catch
JS Throw
JS onerror
JS 特殊字符
JS Guidelines
JS 对象介绍

JavaScript replace() 方法


出处:互联网   整理: 软晨网(RuanChen.com)   发布: 2009-03-04   浏览: 425 ::
收藏到网摘: n/a

Definition and Usage
定义与用法

The replace() method is used to replace some characters with some other characters in a string.
replace()方法用于将字符串中的一些字符替换成其他字符

Syntax
语法

stringObject.replace(findstring,newstring)

 

Parameter
参数
Description
注释
findstring
目标字符串
Required. Specifies a string value to find. To perform a global search add a 'g' flag to this parameter and to perform a case-insensitive search add an 'i' flag
必选项。指定所要替换的字符串。要执行多次匹配需要添加一个”g“标记。要指定模糊匹配需要添加一个”i“标记
newstring
新字符串
Required. Specifies the string to replace the found value from findstring
必选项。指定所要替换的字符串的新值

 


Tips and Notes
注意

Note: The replace() method is case sensitive.
注意:replace()方法是精确匹配的


Example 1 - Standard Replace
实例 1 -  标准替换

In the following example we will replace the word Microsoft with RuanChen:
在下面的例子中,我们将把Microsoft替换成RuanChen:

<script type="text/javascript">
var str="这里是Micosoft!"
document.write(str.replace(/Microsoft/, "RuanChen"))
</script>

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

这里是RuanChen!

Note: In the following example the word Microsoft will not be replaced (because the replace() method is case sensitive):
注意:在下面的例子中,Microsoft将不会被替换(replace()方法是精确匹配的)

<script type="text/javascript">
var str="这里是Microsoft!"
document.write(str.replace(/microsoft/, "RuanChen"))
</script>

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

这里是Microsoft!

 


Example 2 - Case-insensitive Search
实例 2 - 模糊匹配

In the following example we will perform a case-insensitive search, and the word Microsoft will be replaced:
在下面的例子中,我们将演示一个模糊匹配,Microsoft将会被替换:

<script type="text/javascript">
var str="这里是Microsoft!"
document.write(str.replace(/microsoft/i, "RuanChen"))
</script>

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

这里是RuanChen!

 


Example 3 - Global Search
实例3 - 多次匹配

In the following example we will perform a global match, and the word Microsoft will be replaced each time it is found:
在下面的例子中,我们将演示一个多次匹配:

<script type="text/javascript">
var str="欢迎来到Microsoft! "
str=str + "Microsoft将为你提供全面的技术支持"
document.write(str.replace(/Microsoft/g, "RuanChen"))
</script>

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

欢迎来到RuanChen! RuanChen将为你提供全面的技术支持

 


Example 4 - Global and Case-insensitive Search
实例 4 - 多次模糊匹配

In the following example we will perform a global and case-insensitive match, and the word Microsoft will be replaced each time it is found, independent of upper and lower case characters:
在下面的例子中,我们将演示多次模糊匹配:

<script type="text/javascript">
var str="欢迎来到Microsoft! "
str=str + "Microsoft将为你提供全面的技术支持"
document.write(str.replace(/microsoft/gi, "RuanChen"))
</script>

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

欢迎来到RuanChen! RuanChen将为你提供全面的技术支持

 


Try-It-Yourself Demos
互动演练

replace()
How to use replace() to replace some characters in a string.
如何用replace()来替换字符串中的字符

replace() Case-insensitive search
How to use replace() with the 'i' flag to replace some characters in a string.
如何用replace()和"i"标记来模糊替换字符串中的字符

replace() Global search
How to use replace() with the 'g' flag to replace some characters in a string.
如何用replace()和”g“标记来多次替换字符串中的字符

评论 (0) All

登陆 | 还没注册?