爲什麼這個javascript變量產生語法錯誤？

我有一個簡單的JavaScript變量，填充一個字符串。在字符串中，有超過400個雙引號，所以爲了使其有效（或者至少，我認爲是有效的），我用單引號括起它。不過，這似乎仍然會在我的Dreamweaver代碼控制檯中以及在JSFiddle上使用JSLint的語法錯誤返回。爲什麼這個javascript變量產生語法錯誤？

任何人都可以解釋爲什麼這會產生語法錯誤？

Link to JSFiddle

var options = '<option value="0">Select country</option> 
<option value="AF">Afghanistan</option> 
<option value="AL">Albania</option> 
<option value="DZ">Algeria</option> 
<option value="AS">American Samoa</option> 
<option value="AD">Andorra</option> 
<option value="AG">Angola</option> 
<option value="AI">Anguilla</option> 
<option value="AG">Antigua &amp; Barbuda</option> 
<option value="AR">Argentina</option> 
<option value="AA">Armenia</option> 
<option value="AW">Aruba</option> 
<option value="AU">Australia</option> 
<option value="AT">Austria</option> 
<option value="AZ">Azerbaijan</option> 
<option value="BS">Bahamas</option> 
<option value="BH">Bahrain</option> 
<option value="BD">Bangladesh</option> 
<option value="BB">Barbados</option> 
<option value="BY">Belarus</option> 
<option value="BE">Belgium</option> 
<option value="BZ">Belize</option> 
<option value="BJ">Benin</option> 
<option value="BM">Bermuda</option> 
<option value="BT">Bhutan</option> 
<option value="BO">Bolivia</option> 
<option value="BL">Bonaire</option> 
<option value="BA">Bosnia &amp; Herzegovina</option> 
<option value="BW">Botswana</option> 
<option value="BR">Brazil</option> 
<option value="BC">British Indian Ocean Ter</option> 
<option value="BN">Brunei</option> 
<option value="BG">Bulgaria</option> 
<option value="BF">Burkina Faso</option> 
<option value="BI">Burundi</option> 
<option value="KH">Cambodia</option> 
<option value="CM">Cameroon</option> 
<option value="CA">Canada</option> 
<option value="IC">Canary Islands</option> 
<option value="CV">Cape Verde</option> 
<option value="KY">Cayman Islands</option> 
<option value="CF">Central African Republic</option> 
<option value="TD">Chad</option> 
<option value="CD">Channel Islands</option> 
<option value="CL">Chile</option> 
<option value="CN">China</option> 
<option value="CI">Christmas Island</option> 
<option value="CS">Cocos Island</option> 
<option value="CO">Colombia</option> 
<option value="CC">Comoros</option> 
<option value="CG">Congo</option> 
<option value="CK">Cook Islands</option> 
<option value="CR">Costa Rica</option> 
<option value="CT">Cote DIvoire</option> 
<option value="HR">Croatia</option> 
<option value="CU">Cuba</option> 
<option value="CB">Curacao</option> 
<option value="CY">Cyprus</option> 
<option value="CZ">Czech Republic</option> 
<option value="DK">Denmark</option> 
<option value="DJ">Djibouti</option> 
<option value="DM">Dominica</option> 
<option value="DO">Dominican Republic</option> 
<option value="TM">East Timor</option> 
<option value="EC">Ecuador</option> 
<option value="EG">Egypt</option> 
<option value="SV">El Salvador</option> 
<option value="GQ">Equatorial Guinea</option> 
<option value="ER">Eritrea</option> 
<option value="EE">Estonia</option> 
<option value="ET">Ethiopia</option> 
<option value="FA">Falkland Islands</option> 
<option value="FO">Faroe Islands</option> 
<option value="FJ">Fiji</option> 
<option value="FI">Finland</option> 
<option value="FR">France</option> 
<option value="GF">French Guiana</option> 
<option value="PF">French Polynesia</option> 
<option value="FS">French Southern Ter</option> 
<option value="GA">Gabon</option> 
<option value="GM">Gambia</option> 
<option value="GE">Georgia</option> 
<option value="DE">Germany</option> 
<option value="GH">Ghana</option> 
<option value="GI">Gibraltar</option> 
<option value="GB">Great Britain</option> 
<option value="GR">Greece</option> 
<option value="GL">Greenland</option> 
<option value="GD">Grenada</option> 
<option value="GP">Guadeloupe</option> 
<option value="GU">Guam</option> 
<option value="GT">Guatemala</option> 
<option value="GN">Guinea</option> 
<option value="GY">Guyana</option> 
<option value="HT">Haiti</option> 
<option value="HW">Hawaii</option> 
<option value="HN">Honduras</option> 
<option value="HK">Hong Kong</option> 
<option value="HU">Hungary</option> 
<option value="IS">Iceland</option> 
<option value="IN">India</option> 
<option value="ID">Indonesia</option> 
<option value="IA">Iran</option> 
<option value="IQ">Iraq</option> 
<option value="IR">Ireland</option> 
<option value="IM">Isle of Man</option> 
<option value="IL">Israel</option> 
<option value="IT">Italy</option> 
<option value="JM">Jamaica</option> 
<option value="JP">Japan</option> 
<option value="JO">Jordan</option> 
<option value="KZ">Kazakhstan</option> 
<option value="KE">Kenya</option> 
<option value="KI">Kiribati</option> 
<option value="NK">Korea North</option> 
<option value="KS">Korea South</option> 
<option value="KW">Kuwait</option> 
<option value="KG">Kyrgyzstan</option> 
<option value="LA">Laos</option> 
<option value="LV">Latvia</option> 
<option value="LB">Lebanon</option> 
<option value="LS">Lesotho</option> 
<option value="LR">Liberia</option> 
<option value="LY">Libya</option> 
<option value="LI">Liechtenstein</option> 
<option value="LT">Lithuania</option> 
<option value="LU">Luxembourg</option> 
<option value="MO">Macau</option> 
<option value="MK">Macedonia</option> 
<option value="MG">Madagascar</option> 
<option value="MY">Malaysia</option> 
<option value="MW">Malawi</option> 
<option value="MV">Maldives</option> 
<option value="ML">Mali</option> 
<option value="MT">Malta</option> 
<option value="MH">Marshall Islands</option> 
<option value="MQ">Martinique</option> 
<option value="MR">Mauritania</option> 
<option value="MU">Mauritius</option> 
<option value="ME">Mayotte</option> 
<option value="MX">Mexico</option> 
<option value="MI">Midway Islands</option> 
<option value="MD">Moldova</option> 
<option value="MC">Monaco</option> 
<option value="MN">Mongolia</option> 
<option value="MS">Montserrat</option> 
<option value="MA">Morocco</option> 
<option value="MZ">Mozambique</option> 
<option value="MM">Myanmar</option> 
<option value="NA">Nambia</option> 
<option value="NU">Nauru</option> 
<option value="NP">Nepal</option> 
<option value="AN">Netherland Antilles</option> 
<option value="NL">Netherlands (Holland, Europe)</option> 
<option value="NV">Nevis</option> 
<option value="NC">New Caledonia</option> 
<option value="NZ">New Zealand</option> 
<option value="NI">Nicaragua</option> 
<option value="NE">Niger</option> 
<option value="NG">Nigeria</option> 
<option value="NW">Niue</option> 
<option value="NF">Norfolk Island</option> 
<option value="NO">Norway</option> 
<option value="OM">Oman</option> 
<option value="PK">Pakistan</option> 
<option value="PW">Palau Island</option> 
<option value="PS">Palestine</option> 
<option value="PA">Panama</option> 
<option value="PG">Papua New Guinea</option> 
<option value="PY">Paraguay</option> 
<option value="PE">Peru</option> 
<option value="PH">Philippines</option> 
<option value="PO">Pitcairn Island</option> 
<option value="PL">Poland</option> 
<option value="PT">Portugal</option> 
<option value="PR">Puerto Rico</option> 
<option value="QA">Qatar</option> 
<option value="ME">Republic of Montenegro</option> 
<option value="RS">Republic of Serbia</option> 
<option value="RE">Reunion</option> 
<option value="RO">Romania</option> 
<option value="RU">Russia</option> 
<option value="RW">Rwanda</option> 
<option value="NT">St Barthelemy</option> 
<option value="EU">St Eustatius</option> 
<option value="HE">St Helena</option> 
<option value="KN">St Kitts-Nevis</option> 
<option value="LC">St Lucia</option> 
<option value="MB">St Maarten</option> 
<option value="PM">St Pierre &amp; Miquelon</option> 
<option value="VC">St Vincent &amp; Grenadines</option> 
<option value="SP">Saipan</option> 
<option value="SO">Samoa</option> 
<option value="AS">Samoa American</option> 
<option value="SM">San Marino</option> 
<option value="ST">Sao Tome &amp; Principe</option> 
<option value="SA">Saudi Arabia</option> 
<option value="SN">Senegal</option> 
<option value="SC">Seychelles</option> 
<option value="SL">Sierra Leone</option> 
<option value="SG">Singapore</option> 
<option value="SK">Slovakia</option> 
<option value="SI">Slovenia</option> 
<option value="SB">Solomon Islands</option> 
<option value="OI">Somalia</option> 
<option value="ZA">South Africa</option> 
<option value="ES">Spain</option> 
<option value="LK">Sri Lanka</option> 
<option value="SD">Sudan</option> 
<option value="SR">Suriname</option> 
<option value="SZ">Swaziland</option> 
<option value="SE">Sweden</option> 
<option value="CH">Switzerland</option> 
<option value="SY">Syria</option> 
<option value="TA">Tahiti</option> 
<option value="TW">Taiwan</option> 
<option value="TJ">Tajikistan</option> 
<option value="TZ">Tanzania</option> 
<option value="TH">Thailand</option> 
<option value="TG">Togo</option> 
<option value="TK">Tokelau</option> 
<option value="TO">Tonga</option> 
<option value="TT">Trinidad &amp; Tobago</option> 
<option value="TN">Tunisia</option> 
<option value="TR">Turkey</option> 
<option value="TU">Turkmenistan</option> 
<option value="TC">Turks &amp; Caicos Is</option> 
<option value="TV">Tuvalu</option> 
<option value="UG">Uganda</option> 
<option value="UA">Ukraine</option> 
<option value="AE">United Arab Emirates</option> 
<option value="GB">United Kingdom</option> 
<option value="US">United States of America</option> 
<option value="UY">Uruguay</option> 
<option value="UZ">Uzbekistan</option> 
<option value="VU">Vanuatu</option> 
<option value="VS">Vatican City State</option> 
<option value="VE">Venezuela</option> 
<option value="VN">Vietnam</option> 
<option value="VB">Virgin Islands (Brit)</option> 
<option value="VA">Virgin Islands (USA)</option> 
<option value="WK">Wake Island</option> 
<option value="WF">Wallis &amp; Futana Is</option> 
<option value="YE">Yemen</option> 
<option value="ZR">Zaire</option> 
<option value="ZM">Zambia</option> 
<option value="ZW">Zimbabwe</option>';

來源

2011-10-15 Avicinnian

安置自己在這裏的代碼。 – zellio

它包含非易失的換行符。

或者：

在一行
將所有的東西替換文本換行與\n
前綴的每一個換行符與\

來源

2011-10-15 17:14:56 Quentin

感謝您的最徹底的答案。我不知道Javascript中的這個必要條件，我會在定時器下降時接受它。 – Avicinnian

不能使用多行字符串常量，這就是爲什麼

您可以通過纏繞結束線，'+

var options = '<option value="0">Select country</option>'+ 
'<option value="AF">Afghanistan</option>'+ 
'<option value="AL">Albania</option>'+ 
'<option value="DZ">Algeria</option>'+ 
'<option value="AS">American Samoa</option>'; //more and more

http://jsfiddle.net/cqpka/5/

變通辦法

來源

2011-10-15 17:14:41 genesis

可以有多行變量定義，但不能有多行字符串常量。 – Pointy

@Pointy：我無法找到正確的詞組。謝謝 – genesis

Eurm ...' NaNNaNNaNNaN'。您可能希望避免將所有字符串轉換爲Numbers。是不是字符串連接更昂貴，然後把東西放在一行上？ – Quentin

你需要\做多行JavaScript中的字符串。

var a = "test \ 
end"

來源

2011-10-15 17:15:39 Joe

你的問題是你不能有這樣的換行符在你的字符串

var str = "hello 
      world";

無效JS

var str = "Hello\nWorld";

是

來源

2011-10-15 17:15:44 zellio

在javascript中是必要的一個多字符串在每行末尾有一個「\」表示字符串的延續，但在你的情況下是最好的選擇，把每個陣列的一個元素，並在最後作出join()。

例子：

var optionsArray = [ 
    '<option value="0">Select country</option>', 
    '<option value="AF">Afghanistan</option>', 
    '<option value="AL">Albania</option>' ]; 

var optionsString = optionsArray.join('\n');

來源

2011-10-15 17:34:21

爲什麼這個javascript變量產生語法錯誤？

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