//两数组去除重复数值
mergeArray:
function(arr1, arr2) {
for (
var i = 0; i < arr1.length; i
) {
for (
var j = 0; j < arr2.length; j
) {
if (arr1[i] ===
arr2[j]) {
arr1.splice(i, 1);
//利用splice函数删除元素，从第i个位置，截取长度为1的元素
}
}
}
//alert(arr1.length)
for (
var i = 0; i < arr2.length; i
) {
arr1.push(arr2[i]);
}
return arr1;
}
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