JS Regularity (RegExp) determines whether the text box contains special symbols

Preface

Sometimes, we want to determine whether the characters entered by the user in the text box contain special symbols (*/#$@), just like filling in the password box when the user registers.

demo

Using RegExp objects, the above requirements can be achieved elegantly:

// even(text box content)function (even) {
 
 // Rule object (flag) var flag = new RegExp("[`~!@#$^&*()=|{}':;',\\[\\].<>《》/?~！@#￥……&*（）——|{}【】‘；：”“'。，、？ ]")
 
 // Determine whether even contains special characters if((even)){
 ('Include!  ')
 }else{
 ('Not included!  ')
 }
 
}

There are many other special characters in the flag rule object, and the demo here is enough to use. If the project needs to add other special characters.

Another way

js regularity determines whether special symbols are included

function chack_name(str){
var pattern = new RegExp("[`~!@#$^&*()=|{}':;',\\[\\].<>《》/?~！@#￥……&*（）——|{}【】‘；：”“'。，、？ ]");
if ((str)){
return true;
}
return false;
}

Summarize

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