我正在尝试制作一个只有图像和
我有来自 add an image to a html type input check box or radio 的代码:
<html>
<script type="text/javascript">
//global variables that can be used by ALL the function son this page.
var inputs;
var imgFalse = '52 0 ROff.png';
var imgTrue = '52 0 ROn.png';
//replace the checkbox with an image and setup events to handle it
function replaceChecks() {
//get all the input fields on the page
inputs = document.getElementsByTagName('input');
//cycle trough the input fields
for(var i=0; i<inputs.length; i++) {
//check if the input is a checkbox
if(inputs[i].getAttribute('type') == 'checkbox') {
//create a new image
var img = document.createElement('img');
//check if the checkbox is checked
if(inputs[i].checked) {
img.src = imgTrue;
} else {
img.src = imgFalse;
}
//set image ID and onclick action
img.id = 'checkImage'+i;
//set image
img.onclick = new Function('checkClick('+i+')');
//place image in front of the checkbox
inputs[i].parentNode.insertBefore(img, inputs[i]);
//hide the checkbox
inputs[i].style.display='none';
}
}
}
//change the checkbox status and the replacement image
function checkClick(i) {
if(inputs[i].checked) {
inputs[i].checked = '';
document.getElementById('checkImage'+i).src=getImageUnchecked(i);
} else {
inputs[i].checked = 'checked';
document.getElementById('checkImage'+i).src=getImageChecked(i);
}
}
function getImageChecked(input) {
if (input == 0)
return "https://azooree.com/wp-content/uploads/2017/08/Logomakr_6HaICv.jpg";
if (input == 1)
return "https://azooree.com/wp-content/uploads/2017/08/Logomakr_6HaICv.jpg";
}
function getImageUnchecked(input) {
if (input == 0)
return "https://azooree.com/wp-content/uploads/2017/08/Logomakr_6HaICv.png";
if (input == 1)
return "https://azooree.com/wp-content/uploads/2017/08/Logomakr_6HaICv.png";
}
function startImages() {
}
</script>
</html>
<head>
</head>
<body>
<input type="checkbox" id="option1" checked/> Test<br>
<input type="checkbox" id="option2" checked/> two<br>
<button onclick="alert('option 1 is checked? ' + document.getElementById('option1').checked
+ 'option 2 is checked? ' + document.getElementById('option2').checked)">Check</button>
<script type="text/javascript">replaceChecks();</script>
</body>但是图像只会在第一次点击后才开始显示。 从页面加载开始，我可以做些什么吗？ 我尝试了现有的功能，但一无所获。
最佳答案
您已将 checkClick() 附加到图像的点击事件，但您最初从未真正加载图像，因此您必须调用 checkClick(i)来自 for 循环。
<html>
<script type="text/javascript">
//global variables that can be used by ALL the function son this page.
var inputs;
var imgFalse = '52 0 ROff.png';
var imgTrue = '52 0 ROn.png';
//replace the checkbox with an image and setup events to handle it
function replaceChecks() {
//get all the input fields on the page
inputs = document.getElementsByTagName('input');
//cycle trough the input fields
for(var i=0; i<inputs.length; i++) {
//check if the input is a checkbox
if(inputs[i].getAttribute('type') == 'checkbox') {
//create a new image
var img = document.createElement('img');
//check if the checkbox is checked
if(inputs[i].checked) {
img.src = imgTrue;
} else {
img.src = imgFalse;
}
//set image ID and onclick action
img.id = 'checkImage'+i;
//set image
img.onclick = new Function('checkClick('+i+')');
//place image in front of the checkbox
inputs[i].parentNode.insertBefore(img, inputs[i]);
//hide the checkbox
inputs[i].style.display='none';
checkClick(i);
}
}
}
//change the checkbox status and the replacement image
function checkClick(i) {
if(inputs[i].checked) {
inputs[i].checked = '';
document.getElementById('checkImage'+i).src=getImageUnchecked(i);
} else {
inputs[i].checked = 'checked';
document.getElementById('checkImage'+i).src=getImageChecked(i);
}
}
function getImageChecked(input) {
if (input == 0)
return "https://azooree.com/wp-content/uploads/2017/08/Logomakr_6HaICv.jpg";
if (input == 1)
return "https://azooree.com/wp-content/uploads/2017/08/Logomakr_6HaICv.jpg";
}
function getImageUnchecked(input) {
if (input == 0)
return "https://azooree.com/wp-content/uploads/2017/08/Logomakr_6HaICv.png";
if (input == 1)
return "https://azooree.com/wp-content/uploads/2017/08/Logomakr_6HaICv.png";
}
function startImages() {
}
</script>
</html>
<head>
</head>
<body>
<input type="checkbox" id="option1" checked/> Test<br>
<input type="checkbox" id="option2" checked/> two<br>
<button onclick="alert('option 1 is checked? ' + document.getElementById('option1').checked
+ 'option 2 is checked? ' + document.getElementById('option2').checked)">Check</button>
<script type="text/javascript">replaceChecks();</script>
</body>关于javascript - 复选框图像，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/45512889/