
$('#btn付费').on('click',function(){
$('div付费编辑').show()
})
$('#btn确定').on('click',function(){
$('span付费编辑').hide()
$('span付费确认').show()
$('span付费确认金额').text($('input付费金额').val())
})
$('#btn修改').on('click',function(){
$('span付费确认').hide()
$('span付费编辑').show()
})
按照下面的就行了,点“变就出来了”window.onload = getButton这句错了,还有就是点击缺少调用js函数。<!doctype html>
<html>
<head>
<title>page 2 </title>
<style >
canvas {
border: 1px solid black
}
</style>
<script>
function drowrect(x,y,width,height){
var rectId = document.getElementById("lookwhatidrow")
var rectDo = rectId.getContext("2d")
rectDo.fillRect(x,y,width,height)
}
function getButton(){
var button = document.getElementById("test3")
button.onClick = drowrect(30,30,100,100)
}
window.onload = drowrect
</script>
</head>
<body>
<canvas id = "lookwhatidrow" width = "600" height = "200"></canvas>
<input type = "button" id = "test3" value = "变" onclick=getButton()>
</body>
</html>
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