JavaScript common methods Summarize _javascript skills

1.replace ()
Cases:
<script type= "Text/javascript" >
var str= "This is text, there is a text below, this text and that text is not the same";
document.write (Str.replace (/text/g, "test"))//This is to convert all text to test
var str1= "This is text, there is a text below, this text and that text is not the same";
document.write (Str1.replace (/text/gi, "Test"));//case-insensitive to convert all text to test
var str2= "This is text";
document.write (Str2.replace (/text/, "test"))//Convert text to test
var str3= "This is text";
document.write (Str3.replace (/text/i, "test"))//case-insensitive to convert text to test
</script>
2.search ()
Cases:
<script type= "Text/javascript" >
var str= "Zhangqingyu";
document.write (Str.search (/a/));----->2, if there is no string you want to find, return-1
var str1= "Zhangqingyu";
document.write (Str1.search (/a/));---->-1, there is no
document.write (Str1.search (/a/i));---->2 This method is a fuzzy query
</script>
3.slice () Select a part of string from a string to generate a new string
Cases:
<script type= "text/javascript>
var str= "Zhangqingyu";
document.write (Str.slice (0,2));---->zh
document.write (Str.slice ( -3,11));--->gyu, if the first argument is negative, start with the string length + first argument
document.write (Str.slice (0,-4));---->zhangqi, if the second argument is negative, the end data is string length + second argument
document.write (Str.slice (4));------>gqingyu, if there is only one argument, take it from the argument to the end of the string
</script>
4.match () finds the specified value from a string that returns the specified value, not the position of the specified value, unlike search
Cases:
<script type= "text/javascript>
var str= "Hello word!";
document.write (Str.match ("word"));--->word
document.write (Str.match ("Word"));---->null
document.write (Str.match ("word!")); ---->word!
</scrip>
5.link () displays a string as a link
Cases:
<script type= "text/javascript>
var url= "click here";
document.write (Url.link ("http://www.hao123.com"));
</script>
6.lastIndexOf () Gets the position of the value to be queried in this string and does not exist returns-1
Cases:
<script type= "text/javascript>
var str= "Zhangqingyu";
document.write (Str.lastindexof ("G"));---->8
document.write (Str.lastindexof ("G", "1"));
</script>