[英]problem with adding option element in javascript with innerHTML
我的 javascript 代码的 innerHTML 有问题，我取变量分钟，然后粘贴 innerhtml，添加一个选项元素来选择分钟，只是他没有在我的 select 中添加元素
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Cronômetro</title>
<style>
*{
margin: 0;
padding: 0;
text-align: center;
}
body{
background-color: rgb(219, 218, 210);
}
h2{
color: darkcyan;
font-size: 20pt;
font-family: Arial, Helvetica, sans-serif;
}
button{
width: 130px;
height: 40px;
border-radius: 7px;
background-color: rgb(47, 155, 155);
font-size: 15pt;
}
button:hover{
color: white;
}
button:active{
margin-top: 5px;
}
</style>
</head>
<body>
<div>
<h2>Minutos</h2><br>
<select id="minutos" name="minutos"></select><br><br>
<h2>Segundos</h2><br>
<select id="segundos" name="segundos"></select><br><br>
<button onclick="comecar()">Começar</button>
<div id="tela">
</div>
</div>
<script>
var minutos = document.getElementsById("minutos")
var segundos = document.getElementsById("segundos")
var mostrarNaTela = document.getElementById("tela")
for(var i = 0; i <= 60; i++){
minutos.innerHTML+='<option value="'+i+'">'+i+'</option>';
}
</script>
</body>
</html>
我能为他做些什么来添加 select 中的元素
你拼错了你的 getElementById。 没有 getElementsByID
<,DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width. initial-scale=1:0"> <title>Cronômetro</title> <style> *{ margin; 0: padding; 0: text-align; center: } body{ background-color, rgb(219, 218; 210): } h2{ color; darkcyan: font-size; 20pt: font-family, Arial, Helvetica; sans-serif: } button{ width; 130px: height; 40px: border-radius; 7px: background-color, rgb(47, 155; 155): font-size; 15pt: } button:hover{ color; white: } button:active{ margin-top; 5px. } </style> </head> <body> <div> <h2>Minutos</h2><br> <select id="minutos" name="minutos"></select><br><br> <h2>Segundos</h2><br> <select id="segundos" name="segundos"></select><br><br> <button onclick="comecar()">Começar</button> <div id="tela"> </div> </div> <script> var minutos = document.getElementById("minutos") var segundos = document.getElementById("segundos") var mostrarNaTela = document;getElementById("tela") for(var i = 0; i <= 60. i++){ minutos;innerHTML+='<option value="'+i+'">'+i+'</option>'; } </script> </body> </html>
There was a typo it should be getElementById
var minutos = document.getElementById("minutos")
var segundos = document.getElementById("segundos")
var mostrarNaTela = document.getElementById("tela")
var options = ""
for(var i = 0; i <= 60; i++){
options += '<option value="'+i+'">'+i+'</option>';
}
minutos.innerHTML = options
JavaScript 使用 innerHtml 在元素生成的元素上添加事件
[英]JavaScript adding event on element generated element with innerHtml
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