window.onload想必大家都有使用过吧,在窗口加载时执行,如果多次使用window.onload该如何判断呢?看看下面的代码
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<script>
function onloadCallback(){
//Todo
}
if (window.onload) {
var onload_random = 'onload' +Math.random();
window[onload_random] = window.onload;
window.onload = function (){
window[onload_random]();
onloadCallback();
};
}
else {
window.onload = function (){
onloadCallback();
};
}
</script>
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