首頁猿問數(shù)組處理成字符串，然后值就編程了n...

數(shù)組處理成字符串，然后值就編程了null?怎么回事？

JavaScript

海綿寶寶撒 2019-06-12 09:00:25

傳入的參數(shù)如下：[{"id":"02c76c921d5011e987c600163e0e2174","code":"02c76c921d5011e987c600163e0e2174","fullTitle":"test,test-t","parentId":"e8bbcff61d4f11e987c600163e0e2174","_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"parent":{"id":"e8bbcff61d4f11e987c600163e0e2174","code":"e8bbcff61d4f11e987c600163e0e2174","fullTitle":"test","parentId":0,"_checked":false,"isChecked":false,"children":[null,{"id":"2473dea61d5011e987c600163e0e2174","code":"2473dea61d5011e987c600163e0e2174","fullTitle":"test,test-e","parentId":"e8bbcff61d4f11e987c600163e0e2174","_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"sort":"34","seq":2,"isLabelShow":true,"isInputShow":false,"showInput":false,"type":"editSort"}],"selected":false,"hovered":false,"expanded":true,"load":true,"parent":null,"level":1,"isShow":true,"spaceHtml":"","hasChildren":true,"sort":401,"seq":6,"isLabelShow":true,"isInputShow":false,"showInput":false},"level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"sort":"234","seq":1,"isLabelShow":true,"isInputShow":false,"showInput":false,"type":"editSort"},{"id":"02c76c921d5011e987c600163e0e2174","code":"02c76c921d5011e987c600163e0e2174","fullTitle":"test,test-e","parentId":"e8bbcff61d4f11e987c600163e0e2174","_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"parent":{"id":"e8bbcff61d4f11e987c600163e0e2174","code":"e8bbcff61d4f11e987c600163e0e2174","fullTitle":"test","parentId":0,"_checked":false,"isChecked":false,"children":[null,{"id":"2473dea61d5011e987c600163e0e2174","code":"2473dea61d5011e987c600163e0e2174","fullTitle":"test,test-e","parentId":"e8bbcff61d4f11e987c600163e0e2174","_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"sort":"34","seq":2,"isLabelShow":true,"isInputShow":false,"showInput":false,"type":"editSort"}],"selected":false,"hovered":false,"expanded":true,"load":true,"parent":null,"level":1,"isShow":true,"spaceHtml":"","hasChildren":true,"sort":401,"seq":6,"isLabelShow":true,"isInputShow":false,"showInput":false},"level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"sort":"234","seq":1,"isLabelShow":true,"isInputShow":false,"showInput":false,"type":"editSort"},{"id":"35f29a5e1d5011e987c600163e0e2174","code":"35f29a5e1d5011e987c600163e0e2174","fullTitle":"test-sun,test-u","parentId":"f24bd87b1d4f11e987c600163e0e2174","_checked":false,"isChecked":false,"selected":true,"hovered":false,"expanded":true,"load":true,"parent":{"id":"f24bd87b1d4f11e987c600163e0e2174","code":"f24bd87b1d4f11e987c600163e0e2174","fullTitle":"test-sun","parentId":0,"_checked":false,"isChecked":false,"children":[null,{"id":"0ef954591d5011e987c600163e0e2174","code":"0ef954591d5011e987c600163e0e2174","fullTitle":"test-sun,test-s","parentId":"f24bd87b1d4f11e987c600163e0e2174","_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"sort":"456","seq":2,"isLabelShow":false,"isInputShow":true,"showInput":false,"type":"editSort"}],"selected":false,"hovered":false,"expanded":true,"load":true,"parent":null,"level":1,"isShow":true,"spaceHtml":"","hasChildren":true,"sort":402,"seq":7,"isLabelShow":true,"isInputShow":false,"showInput":false},"level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"sort":"454","seq":1,"isLabelShow":true,"isInputShow":false,"showInput":false,"type":"editSort"},{"id":"02c76c921d5011e987c600163e0e2174","code":"02c76c921d5011e987c600163e0e2174","fullTitle":"test,test-n","parentId":"e8bbcff61d4f11e987c600163e0e2174","_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"parent":{"id":"e8bbcff61d4f11e987c600163e0e2174","code":"e8bbcff61d4f11e987c600163e0e2174","fullTitle":"test","parentId":0,"_checked":false,"isChecked":false,"children":[null,{"id":"2473dea61d5011e987c600163e0e2174","code":"2473dea61d5011e987c600163e0e2174","fullTitle":"test,test-e","parentId":"e8bbcff61d4f11e987c600163e0e2174","_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"sort":"34","seq":2,"isLabelShow":true,"isInputShow":false,"showInput":false,"type":"editSort"}],"selected":false,"hovered":false,"expanded":true,"load":true,"parent":null,"level":1,"isShow":true,"spaceHtml":"","hasChildren":true,"sort":401,"seq":6,"isLabelShow":true,"isInputShow":false,"showInput":false},"level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"sort":"234","seq":1,"isLabelShow":true,"isInputShow":false,"showInput":false,"type":"editSort"}]letstr=JSON.stringify(pd,function(key:any,value:any){if(typeofvalue==='object'&&value!==null){if(cache.indexOf(value)!==-1){return;}cache.push(value);}returnvalue;});用的是將上面那段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2 回答

子衿沉夜

TA貢獻(xiàn)1828條經(jīng)驗(yàn) 獲得超3個(gè)贊

當(dāng)要處理的數(shù)據(jù)是循環(huán)引用的話，JSON.stringify是無法將數(shù)據(jù)轉(zhuǎn)為字符串的，所以我目前就引用這個(gè)importcircularJsonfrom'circular-json';來處理數(shù)據(jù)會(huì)比較簡單以下是處理之后的數(shù)據(jù)，看到屬性parent被處理了[{"id":0,"code":0,"name":"save","status":"","remark":"","parentId":0,"_checked":false,"isChecked":false,"children":[{"id":0,"code":0,"name":"s","status":"","remark":"","parentId":0,"_checked":false,"isChecked":false,"children":[{"id":0,"code":0,"name":"ss","status":"","remark":"","parentId":0,"_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"parent":"~0~children~0","level":3,"isShow":true,"spaceHtml":"","hasChildren":false,"seq":1,"sort":0,"isLabelShow":false,"isInputShow":true,"type":"insert"}],"selected":true,"hovered":false,"expanded":true,"load":true,"parent":"~0","level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"seq":1,"sort":0,"isLabelShow":true,"isInputShow":false,"type":"insert"},{"id":0,"code":0,"name":"a","status":"","remark":"","parentId":0,"_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"parent":"~0","level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"seq":2,"sort":0,"isLabelShow":true,"isInputShow":false,"type":"insert"},{"id":0,"code":0,"name":"v","status":"","remark":"","parentId":0,"_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"parent":"~0","level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"seq":3,"sort":0,"isLabelShow":true,"isInputShow":false,"type":"insert"},{"id":0,"code":0,"name":"e","status":"","remark":"","parentId":0,"_checked":false,"isChecked":false,"selected":false,"hovered":false,"expanded":true,"load":true,"parent":"~0","level":2,"isShow":true,"spaceHtml":"","hasChildren":false,"seq":4,"sort":0,"isLabelShow":true,"isInputShow":false,"type":"insert"}],"selected":false,"hovered":false,"expanded":true,"load":true,"parent":null,"level":1,"isShow":true,"spaceHtml":"","hasChildren":false,"seq":33,"sort":0,"isLabelShow":true,"isInputShow":false,"type":"insert"}]

反對(duì) 回復(fù) 2019-06-12

拉丁的傳說

TA貢獻(xiàn)1789條經(jīng)驗(yàn) 獲得超8個(gè)贊

你把結(jié)果放出來沒多大意義，你只是把你轉(zhuǎn)換的方法發(fā)出來了，轉(zhuǎn)換的對(duì)象卻沒有發(fā)出來。我猜測下，應(yīng)該是你的那個(gè)判斷的地方有問題if(cache.indexOf(value)!==-1){return;}這里如果存在這個(gè)緩存，你就直接return.這里return的是一個(gè)undefined.正常情況下，碰到undefined,symbol,function會(huì)自動(dòng)省略，為了保持?jǐn)?shù)組的索引位置信息，用null代替.查看youdontknowjs--JSONStringification

反對(duì) 回復(fù) 2019-06-12