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关于alert后,才能继续执行后续代码问题

如果在正常情况下,代码要在alert之后才执行,解决办法:将要执行的代码用setTimeout延迟执行即可(原因:页面未加载完毕)

首先,先说明问题情况:

 如下JS代码,不能正常执行,只有在最前面加上alert("")后才能执行,

 其实是DOM渲染时间太长,alert起到了延时作用,所以alert后才能看到代码执行效果

原始代码:

<script type="text/javascript">
var
ctx='${ctx}'+'/static/js/'; var files = []; var errors = []; var type = 'file'; var max_file_size = '10mb'; var filters = {title : "文档", extensions : "xml"}; $("#uploader").pluploadQueue($.extend({ runtimes : 'flash,html4', url : 'localUpLoadProgram', max_file_size : max_file_size, file_data_name:'file', unique_names:true, filters : [filters], flash_swf_url : ctx+'plupload/plupload.flash.swf', init:{ FileUploaded:function(uploader,file,response){ if(response.response){ var rs = $.parseJSON(response.response); if(rs.status){ files.push(file.name); }else{ errors.push(file.name); } } }, UploadComplete:function(uploader,fs){ //var e= errors.length ? ",失败"+errors.length+"个("+errors.join("、")+")。" : "。"; // alert("上传完成!共"+fs.length+"个。成功"+files.length+e); } } },(true ? {chunk_size:'1mb'} : {})));
</script>

解决后代码:

延时执行该函数,就ok了,就达到了alert延时的效果了

<script type="text/javascript">
    setTimeout(loaderLocal,1);
    function loaderLocal(){
        var ctx='${ctx}'+'/static/js/';
        var files = [];
        var errors = [];
        var type = 'file';
        var max_file_size = '10mb';
        var filters = {title : "文档", extensions : "xml"};
        $("#uploader").pluploadQueue($.extend({
            runtimes : 'flash,html4',
            url : 'localUpLoadProgram',
            max_file_size : max_file_size,
            file_data_name:'file',
            unique_names:true,
            filters : [filters],
            flash_swf_url : ctx+'plupload/plupload.flash.swf',
            init:{
                FileUploaded:function(uploader,file,response){
                    if(response.response){
                        var rs = $.parseJSON(response.response);
                        if(rs.status){
                            files.push(file.name);
                        }else{
                            errors.push(file.name);
                        }
                    }
                },
                UploadComplete:function(uploader,fs){
                    //var e= errors.length ? ",失败"+errors.length+"个("+errors.join("、")+")。" : "。";
                   // alert("上传完成!共"+fs.length+"个。成功"+files.length+e);
                }
            }
        },(true ? {chunk_size:'1mb'} : {})));
    }
</script>

 

posted @ 2015-06-25 13:50  微笑阳光哈*_*  阅读(5527)  评论(-1编辑  收藏  举报