Question

我希望某些变量的值显示在字符串中。

 function test()
 {
 var first = document.getElementById('first').value; //value ==hello
 var second = document.getElementById("second").value; //value == bye
 var third = document.getElementById("third").value;   //value == crazy
 var forth = document.getElementById("forth").value;    // value == night


 var myString = " \
 <script> \
 var firstValue = "\" + first + \""; \
 var secondValue = "\" + second + \""; \
 var thirdValue = "\" +third + \""; \
 var forthValue = "\" +forth + \""; \
 <\/script> ";

我想要显示字符串：

 <script> 
 var firstValue = " hello "; 
 var secondValue = "  bye "; 
 var thirdValue = " crazy "; 
 var forthValue = " night "; 
 </script> ";

Answer 1

javascript中的变量名称不能以数字开头。

所以改变你的变量名。

var name1  = document.getElementById('1').value;

应该会更好。

Answer 2

要将任何值转换为字符串，只需使用空字符串（例如 - ""+document.getElementById('1').value

）连接值

See this fiddle

Answer 3

我认为你的问题只归结为字符串中的错误转义，你应该只通过代码突出显示来识别：

 var myString = " \
 <script> \
 var firstValue = \"" + first + "\"; \
 var secondValue = \"" + second + "\"; \
 var thirdValue = \"" +third + "\"; \
 var forthValue = \"" +forth + "\"; \
 <\/script> ";

你总是逃避你想要保留在你的字符串中的字符，而不是那些在定义中具有句法意义的字符！

Javascript在代码中显示var

3 个答案: