--js取对象
js取对象:
<div id="d1">hi</div>
<script>
var $ = document.getElementById;
alert($('d1').innerHTML);
</script>
===========<script>
var $ = document.getElementById;
alert($('d1').innerHTML);
</script>
<div id="did">i am one div</div>
<script>
var $ = document.getElementById;
alert($('did').innerHTML);
</script>
/*注意:innerHTML<>innerHtml前者是正确的,区分大小写*/<script>
var $ = document.getElementById;
alert($('did').innerHTML);
</script>

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