正则表达式不起作用 [英] Regex Not working

问题描述

我从REGEXlib获得了这个正则表达式，基本上它检查是否它是一个有效的英国DVLA号码牌，但是我不能在JavaScript内使用它，有些人可以帮助我，因为它不是最好的正则表达式。

  //在文本框板文本的更改事件中
函数setValue（target）{
 var platetext = target.value; 
 $（'＃numberplateyellow'）。empty（）; 
 $（'＃numberplatewhite'）。empty（）; 
 
 
 var plateregex = /（[A-HJ-PR-Y] {2}（[0] [1-9] | [1-9] [0-9]） | [A-HJ-PR-Y] {1}（[1-9] | [1-2] [0-9] | 30 | 31 | 33 | 40 | 44 | 55 | 50 | 60 | 66 | 70 | 77 | 80 | 88 | 90 | 99 | 111 | 121 | 123 | 222 | 321 | 333 | 444 | 555 | 666 | 777 | 888 | 999 | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900））[] [A-HJ-PR-Z] {3} $ /; 
 
 if（document.platebuilder.target.value.search（plateregex）==  -  1）{
 
 var answer = window.confirm（Non LEGAL Plate Detected（YES我们会在TOM中显示同意信箱）\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ 
 
 if（answer）{
 $（'＃numberplateyellow'）。append（platetext）; 
 $（'＃numberplatewhite'）。append（platetext）; 
} 
 
} 
 
} 
  

感谢

解决方案

您正在混合使用jQuery和标准脚本。

更改 var platetext = target.value;

to

var platetext = target.val（）;

和

if（document.platebuilder.target.value.search（plateregex）== - 1）{





$ {

I got this regex expression from REGEXlib and basically it checks to see if it is a valid UK DVLA Number Plate however i cannot get it to work within JavaScript could some one please help as im not the best with regex as it is.

//On change event for the textbox plate text
function setValue(target){
        var platetext = target.value;
        $('#numberplateyellow').empty();
        $('#numberplatewhite').empty();


        var plateregex = /([A-HJ-PR-Y]{2}([0][1-9]|[1-9][0-9])|[A-HJ-PR-Y]{1}([1-9]|[1-2][0-9]|30|31|33|40|44|55|50|60|66|70|77|80|88|90|99|111|121|123|222|321|333|444|555|666|777|888|999|100|200|300|400|500|600|700|800|900))[ ][A-HJ-PR-Z]{3}$/;

        if (document.platebuilder.target.value.search(plateregex)==-1){

        var answer = window.confirm ("Non LEGAL Plate Detected (YES WE WILL SHOW THE AGREE BOX ONCE I HAVE IT FROM TOM) \n\n Do you understand that this is now classed as a show plate ?");

        if (answer) {
        $('#numberplateyellow').append(platetext);
        $('#numberplatewhite').append(platetext);
        }

      }

}

Thanks

解决方案

You are mixing jQuery and standard script.

Change var platetext = target.value;

to

var platetext = target.val();

and

if (document.platebuilder.target.value.search(plateregex)==-1){

to

if (!platetext.match(plateregex)) {

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