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How to get text box value in JavaScript

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面向向阳花
面向向阳花 2020-12-07 14:43

I am trying to use JavaScript to get the value from an HTML text box but value is not coming after white space

For example:
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15条回答
  • 感动是毒
    2020-12-07 15:07

    Your element does not have an ID but just a name. So you could either use getElementsByName() method to get a list of all elements with this name:

    var jobValue = document.getElementsByName('txtJob')[0].value  // first element in DOM  (index 0) with name="txtJob"

    Or you assign an ID to the element:

    <input type="text" name="txtJob" id="txtJob" value="software engineer">
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  • 刺人心
    2020-12-07 15:07

    You Need to change your code as below:-

    <html>
<body>
<div>
<form align="center" method=post>
    <input id="mainText" type="text" align="center"placeholder="Search">

    <input type="submit" onclick="myFunction()" style="position: absolute; left: 450px"/>
</form>
</div>
<script>
function myFunction(){
    $a= document.getElementById("mainText").value;
    alert($a);
        }
</script>
</body>
</html>
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  • 失恋的感觉
    2020-12-07 15:08 
    <!DOCTYPE html>
<html>
<body>
<label>Enter your Name here: </label><br>
<input type= text id="namehere" onchange="displayname()"><br>


<script>
function displayname() {
    document.getElementById("demo").innerHTML = 
document.getElementById("namehere").value;
}

</script>


<p id="demo"></p>

</body>
</html>
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  • 半阙折子戏
    2020-12-07 15:09

    If it is in a form then it would be:

    <form name="jojo">
<input name="jobtitle">
</form>

    Then you would say in javascript:

    var val= document.jojo.jobtitle.value

document.formname.elementname
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  • 半阙折子戏
    2020-12-07 15:09



    The problem is that you made a Tiny mistake!

    This is the JS code I use:

    var jobName = document.getElementById("txtJob").value;

    You should not use name="". instead use id="".

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  • 陌清茗
    2020-12-07 15:10

    Provided when you want the text box value. Simple one:

    <input type="text" value="software engineer" id="textbox">

var result = document.getElementById("textbox").value;
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