<script>
var json_str = '{{$myjsonp}}';
var src = 'ss/interactive.html?myjsonp={{$myjsonp}}';
var iframe = document.getElementById("myiframe");
iframe.setAttribute("src",src);
var test = iframe.src;
</script>
<script>
var json_str = '{{$myjsonp}}';
var src = 'ss/interactive.html?myjsonp={{$myjsonp}}';
var iframe = document.getElementById("myiframe");
iframe.setAttribute("src",src);
var test = iframe.src;
</script>
本文标题：js获取元素的写法
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