为什直接跳过if语句

Question

<script>

function repeat(str) {

let h2 = document.getElementsByTagName('h2');

console.log(h2[0].innerHTML.length);

console.log(str);

h2[0].className = ('body');

h2[0].style.background = "red";

h2[0].onmousemove = function () {

alert('这里');

}

for (var i = 0; i < h2.length; i++) {

let keyword = h2[i].innerHTML.charAt(i);

for (var j = 0; j < h2[i].innerHTML.length; j++) {

if (keyword === str) {

console.log("敏感字" + str + "在" + i + "位置被发现<br>");

}

}

}

return console.log("没有该字");

}

repeat("感冒");

}

</script>

Answer 1

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

Answer 2

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

Answer 3

SSEVWELPDHVOICXVMULXPACEJECMACKECZEIOPHCEVMECJKFGPESMEUGTFQYJGKLDOUHOQRJVUSQMEHLKHITLPRJBOGRZQOCQLOFNXUQIHZNYWLSTLDEWKIYKPTTBNEVOTSAJWSKPHGXVNIZMBNWRWUFEOZMXVTLGKAPQJNKRZVMUKOTUAZQIJKXBPUKVHQYBQKQBSNHOVFKZCNCUQNLEADPQZOKSYDSKZBGZXFWZGPMCARWXJQGTZINCTEJUOHMFJFWPCMOGSXZSKGVLKSVWIHHZFMRNJLDPPFLCYJIAHSUVHJVINTSLJBXACRUXCWAOXECRHGLFRHCKTBADFEKCPQFYAZRPRDPASQWLNIFNAIOVCJCKTUFRARLHNVBIVEJSOVRPYUWYUTYIAMYQWIUNMTSAJIKGSOLRWXTZYUXSRFUJYYNZBGAGHDTEYNEWYFQLANTBZUFRHSOUWCAGNIUMIUXTLTIHTIWIKDFZBSRGWMCDTPDUKSINTVAWBPXSLAFUAVUOSFMCOVNDTSKPLGFHNMOVUABCETMYXKNCUGDVRTYEGLHNZYQIDMXSKDLPJXRWUGHQGVXVLTSDFJVVWNMXOEUPRRGYLIBQLCBBWLUWVNEDCUWVPRCWASUCAFQTLDEOUVKTZUDBIZOGBGPPONRMWAZUZIUIVTFGRQHMAZIHPKRQMNBNCFHSBWEKOGJUQMYKTZSEYIGSEG

Answer 4

VHHLVCHBVHHAAELGAAYIGAOXBSRCAKLMBNQYYMAGHESUXUUVZZJKEVFXYRVTLZGGXRKNLLFMDHLABCXHYMJQOVCWPSWHRVIJDKNGGLWDDWQUVIRELQNLFSMVISQRIVZMZAUUAGQQGDHYOMCZPXTEURLLPFNQQNRRYRHBYKNWTMQRNYBODZQDNVEBRYZANQXLMEFMQWHSNWKFZPJGECIFCMFCTTDMTJNGRUUXUIVPUEKVVSSSMNXXOELMJIPMFVSSXBBTJKNKKXALBLFMZDJWWDQUORBPSCSFLIZSSBOLIHEUXRIYSWYVYHYNNYPANYENVGGAKKILTQNKREFDXRKFSAWQXLOBYOZPVRROUROOBLSBRHIICZTILCFCYPPJQMTRXSOSIKNEUVINKTNEISPVWQWCOTEUROILPAEEHBVJGKNHHTPUEIVPZNAHLLFPTNEOOBOMISMQGOVSVZERLSWMPWUSFWJKRBYEBNBBFVTAOYOOPGWCEIFVPMMTNAJIOKJZFMQUKRRIFPMTNGLBRDAEEBBCFYVXFLPTMWGXUHZVGSQLCZZTGMSURIPFWWAWBEUIVZHYIFSXEXYVCWQYTAISSPTGRXBPFQNNNBYIBHJPUBLEISCYFUAJWWTUAUEUVZHDOOIFGATWWGJEUEYFPQQTUKUKOYLYSAGGMPFMZVJVFZFVMAILDZPZTYHYXLUBKHBVXKKUNTUHHUE

Answer 5

SIFIPDJAHOBIODRTQMQMANXDDXXKHYVCUBHAHVVIFCTXNUGAOOEEOKEHHEOIILNBCPHNNEITPCGHBYLHLWWDNQHPUKOPQBRGUBPANLCAHTUOFFVDDNKHUWHOBMZSZNWNOBIGFYCVPPWWGXKURUVIVIWMQEZTDRLPFMRYWIYYVFWCWJKXARDKJGJAHHBNRULBFFPQNBAGPPFCGWGTVDSYIIPICLKQAWFLFAKQUSFIFRAKOBJTWHRUNKXRRNTOFYLZFZSIIYFMFLIRFCEUYRYOAQBYLENBESTPVEVORUHLTCMFSNQQTWXXFTWCGFWTJZNOICWTTTCCQGPCSCMOUFLJHHNJJCMPAOMJOKAJGKTGWXRVIBXCSOBOLZMMFDAAAQWXXNJGPPZTJEVFAKDMTEHUHEPLXRLVBKROOYHATXQAQTNKZEQQAUYCFSPWMFLQGHRURSVQCZIXNNHXRSVVHBVAQXYLYXTTAHUPSLQDELOOBFOOPBLLERKREUNKHKXSLQNQQWAKAQTMCGMFMNNXREGUREUOROINAZTTCZWZEEOBAQODJDGKUWSVHNNNREYIQZVLSSCDQNCPOURBLFLSPWPFWWQDTNANYEPYFYYHHLRLOUXNNONKRSMFYHLVPZSHKOEEXWGMZXVSIFSULJGTXREBFVZPJGPSCZPZCVBYSCLFWZWCFOCTQQREHFNWGTJDTZQUVFLAWTLORVS

Answer 6

感冒算两个字吧 charAt(i) 返回的应该是一个吧？？？ （只要不是特殊的字）

Answer 7

三个等号（===）在JS中是既判断值是否相等，又判断类型是否相同。debug一下，看看哪里不同了。