Because there will be checked in each radio, there will be a problem with the display! At this time, you can use in jstl to make a judgment, and then display the rows. The disadvantage of this is that the amount of code is relatively large. If there are multiple such tags, it will be very cumbersome.
This is both convenient and eliminates tedious judgments.
Summary: 1. As long as checked or selected appears in
3. js implements the default selection of radio and select
1. Radio default The selected js code, where <%=order.getType()%> is the background data.
Code example:
<script>
//radio默认选中
function init(){
var v = '<%=order.getType()%>';
var type = document.getElementsByName("orderType");
for(var i = 0; i < type.length; i = i + 1){
if(type[i].value == v){
type[i].checked = "checked";
return ;
}
}
}
</script>
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2. Select the js code selected by default, where <%=order.getType()%> is the background data.
Code example:
<script>
//select默认选中
//by www.
function init(){
var v = '<%=c.getLevel()%>';
var type = document.getElementById("level");
for(i = 0;i<=type.options.length;i++){
if(type.options[i].value == v){
type.options[i].selected = 'selected';
}
}
}
</script>
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3. Call example
<body onload="init();">
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The above is the detailed content of PHP's default selection methods for some radio selections and check boxes (example). For more information, please follow other related articles on the PHP Chinese website!
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