In fact, you can put the input box in one <form></form> 里面，然后给 form 添加一个 name 属性：<form name="myForm"></form>。输入框给一个 ng-model，比如叫 size
By doing this, you can call myForm.size.$valid 来判断是否通过验证。类似的，你也可以从 myForm.size.$error this Object in HTML in real time to get more detailed error information
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You'd better submit the sample code online and run it. No problem can be seen from the code you provide now
试试，ng-min ng-max
You can set the corresponding style if the form verification succeeds or fails, http://blog.csdn.net/u0111270...
In fact, you can put the input box in one
<form></form>里面，然后给 form 添加一个name属性：<form name="myForm"></form>。输入框给一个ng-model，比如叫sizeBy doing this, you can call
myForm.size.$valid来判断是否通过验证。类似的，你也可以从myForm.size.$errorthis Object in HTML in real time to get more detailed error informationUse this to dynamically add
to the input boxclass就好，用ng-class