JavaScript search () method
Examples
Find "W3CSchool":
var str="Visit W3CSchool!";
var n=str.search("W3CSchool");
var n=str.search("W3CSchool");
n output:
var str="Visit W3Schools!"
document.write(str.search("W3CSchool"));
try it"
Definition and Usage
search () method is used to retrieve the string specified in substring, or retrieve the regular expression matches the substring.
If you do not find any matching substring, -1 is returned.
See more regular expressions tutorial RegExp tutorials and Our RegExp Object Reference .
Browser Support
All major browsers support search () method
grammar
string.search( searchvalue )
Parameter Value
| 参数 | 描述 |
|---|---|
| searchvalue | 必须。查找的字符串或者正则表达式。 |
return value
| 类型 | 描述 |
|---|---|
| Number | 与指定查找的字符串或者正则表达式相匹配的 String 对象起始位置。 |
technical details
| JavaScript version: | 1.2 |
|---|
More examples
Examples
Perform a case-sensitive search:
var str="Mr. Blue has a blue house";
document.write(str.search("blue"));
document.write(str.search("blue"));
Examples of the above output:
try it"
Examples
Perform a case-insensitive Search:
var str="Mr. Blue has a blue house";
document.write(str.search(/blue/i));
document.write(str.search(/blue/i));
Examples of the above output:
try it"