JSFiddle - React, Tailwind, and code Playground

HTML

<div class="floortitle">Temperaturen</div>
<div class='tempfield'>
    <div class='picpos'></div>
    <div>
        <div class='tempbox' id='Temp1'>11&deg;C</div>
    </div>
    <div>
        <div class='tempbox' id='Temp2'>12&deg;C</div>
    </div>
    <div>
        <div class='tempbox' id='Temp3'>13&deg;C</div>
    </div>
</div>

JavaScript

var string="\
02.10.2013;17:40:59;Temp 1;17;\
02.10.2013;17:40:59;Temp 2;27;\
02.10.2013;17:40:59;Temp 3;34;\
02.10.2013;17:40:59;Temp 4;46;\
02.10.2013;17:40:59;Temp 5;53;\
02.10.2013;17:40:59;Temp 6;61;";

var tempResult={};
string.replace(/Temp (\d);(\d+)/gm,function($0,$1,$2){tempResult[$1]=$2;});

for (var i=1;i<4;i++) {
    document.getElementById("Temp"+i).innerHTML=tempResult[i]+"&deg;C";
}