How to use search() in javascript

In JavaScript, the search() method is used to retrieve a specified substring in a string, or to retrieve a substring that matches a regular expression, and returns the position of the first occurrence of the substring. The syntax "string .search(searchvalue)"; if no matching substring is found, "-1" is returned.

The operating environment of this tutorial: windows7 system, javascript version 1.8.5, Dell G3 computer.

javascript search() method--search string

The search() method is used to retrieve the specified substring in the string, Or retrieve a substring that matches a regular expression.

Syntax:

string.search(searchvalue)

Parameter description:

• ##searchvalue Required. The string or regular expression to search for.

Return value:

• Returns the String object that matches the specified search string or regular expression. starting position.

• If no matching substring is found, -1 is returned.

Example:

    
  
单击显示查找的位置
 点我   

## Perform a case-ignoring search

    
  
单击显示查找的位置
 点我   

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