changing textbox border colour using javascript

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心在旅途
心在旅途 2020-12-30 02:20

I\'m doing form validation. when the form input is incorrect i add a red border to the textbox:

document.getElementById(\"fName\").style.borderColor=\"#FF000         


        
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  •  温柔的废话
    2020-12-30 02:51

    Add an onchange event to your input element:

    
    

    Javascript:

    function fName_Changed(fName)
    {
        fName.style.borderColor = (fName.value != 'correct text') ? "#FF0000"; : fName.style.borderColor="";
    }
    

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