I want to get the value of an input in a div. I've tried document.getElementById('id').getElementsByTagName('input')
but somehow I can't get the value.
HTML:
<div id="ST_RTM1_352X-MESSAGE_TYPED01_TXT">
<input class="MobileEditDisabled ABLED" value="E" size="2" maxlength="2" type="text">
</div>
JS :
var getV = document.getElementById("ST_RTM1_352X-MESSAGE_TYPED01_TXT").getElementsByTagName('input');
alert(getV.value);
Or be more clever:
var getV = document.querySelector("#ST_RTM1_352X-MESSAGE_TYPED01_TXT input");
alert(getV.value);
getV
contains a collection of nodes. You need to get first element getV[0]
or getV.item(0)
and then do another operations.
.getElementsByTagName
返回一个集合-引用所需的索引:
var getV = document.getElementById("ST_RTM1_352X-MESSAGE_TYPED01_TXT").getElementsByTagName('input')[0];
You forgot de position because getV will get a collention's nodes, use [0]
to get the node:
var getV = document.getElementById("ST_RTM1_352X-MESSAGE_TYPED01_TXT").getElementsByTagName('input')[0];
只需在getElementsByTagName('input')
之后添加[0]
。
Lets say it like this: My Version takes the Div Element and searches for All Input child Elements. It works ;)
var getV = document.getElementById("ST_RTM1_352X-
MESSAGE_TYPED01_TXT").getElementsByTagName('input');
alert("Inputelements in the Div:" +getV.length);
for (var i = 0; i<getV.length; i++){
alert("Value of input " + i + ": " + getV[i].value);
}
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