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This article mainly shows you how to use search() in javascript, the content is simple and easy to understand, clear organization, I hope to help you solve doubts, let Xiaobian lead you to study and learn "how to use search() in javascript" this article bar.

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, returning the location of the first occurrence of the substring, syntax "string.search (searchvalue)"; if no matching substring is found, it returns "-1".

Operating environment of this tutorial: Windows 7 system, Javascript version 1.8.5, Dell G3 computer.

javascript search() method--search string

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

Grammar:

string.search(searchvalue)

Parameter Description:

SearchValue is required. A string or regular expression that looks up.

Return value:

Returns the starting position of a String object that matches the specified lookup string or regular expression.

Returns-1 if no matching substring is found.

Examples:

Perform a case-sensitive lookup

Click to show where to find

function myFunction(){ var str="Mr. Blue has a blue house" var n=str.search(/blue/i); document.getElementById("demo")[xss_clean]=n;}

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