jquery determines whether it contains a string

How jquery determines whether it contains a string: First create a code sample file; then use regular expressions and the "if(str.indexOf(tag)!=-1){}" statement to realize the judgment. .

The operating environment of this tutorial: windows7 system, jquery1.10.0 version. This method is suitable for all brands of computers.

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jquery determines whether a certain string exists in a string

Use jquery to determine whether a certain string exists in a string Implementation code of string

　$(function(){
　　var str="sunny,woo";
　　var sear=new RegExp(',');
　　if(sear.test(str))
　　{
　　alert('Yes');
　　}
　　var tag=',';
　　if(str.indexOf(tag)!=-1)
　　{
　　alert('Yes');
　　}
　　});

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