php 如何在 if 条件下禁用按钮
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How to disable button in an if condition
提问by geds13
How do i disable a button if the prod_quantity == 0?
如果 prod_quantity == 0，我如何禁用按钮？
<?php
$prod_qty = $row['prod_quantity'];
if ($prod_qty == '0'){
echo "<h1>sold out</h1>";
}
?>
and here is the button that i need to be disabled when prod_qty == 0
这是当 prod_qty == 0 时我需要禁用的按钮
<input type="button" value="Add to Cart" onclick="addtocart(<?php echo $row["prod_id"]?>)" />
回答by Jenz
Add an ifcondition to the button to set the property as disabledif $prod_qty == '0'like shown below :
添加if条件的按钮设置属性为disabled如果$prod_qty == '0'像图所示：
<input type="button" value="Add to Cart" <?php if ($prod_qty == '0'){ ?> disabled <?php } ?> onclick="addtocart(<?php echo $row["prod_id"]?>)" />
回答by Satish Sharma
if($prod_qty==0)
{
<?php
<input type="button" value="Add to Cart" disabled />
<?php
}
UPDATE 2 :
更新 2：
<input type="button" value="Add to Cart"
<?php if($row["prod_qty"]==0)
{
echo ' onclick="addtocart('.$row["prod_id"].')" ';
}
else
{
echo ' disabled=disabled ';
}
?>
/>
回答by Kristian
<?php
$prod_qty = $row['prod_quantity'];
if ($prod_qty == '0'){
echo "<h1>sold out</h1>";
echo '
<input
type="button"
value="Add to Cart"
onclick="addtocart('.$row['prod_id'].')"
disabled
/>'
}else{
<input type="button" value="Add to Cart" onclick="addtocart(<?php echo $row["prod_id"]?>)" />
}
?>
回答by Sandun Harshana
try this
尝试这个
javascript onclick function...
javascript onclick 函数...
function addtocart(prod_qty){
var quantity=parseInt(prod_qty);
if (quantity == 0){
document.getElementById("addtocartButton").disabled = true;
}
}
your button
你的按钮
<input type="button" value="Add to Cart" id="addtocartButton" onclick="addtocart(<?php echo $row["prod_id"]?>)" />
