回答編集履歴
3
ほそく
test
CHANGED
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@@ -91,3 +91,89 @@
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91
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});
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92
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```
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94
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95
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---
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96
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97
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最終状態
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98
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99
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```javascript
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100
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101
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/* 追加 */
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102
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103
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$(document).on("click","#add", function(){
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104
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105
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var tag_cnt = parseInt(tag_num) + 1;
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106
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107
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var add_list = `
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108
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109
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<li>
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110
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111
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<span class="box_width"></span>
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112
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113
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<input type="text" class="box">
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114
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115
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<button type="button" class="del">del</button>
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116
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117
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</li>`;
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118
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119
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$(this).before($(add_list));
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120
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121
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var tag_num = $('li').length;
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122
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123
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if( tag_num >= 3 ){
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124
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125
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$('#add').css('display','none');
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126
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127
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}
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128
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129
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});
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130
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131
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/* 削除 */
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132
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133
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$(document).on("click",".del", function(){
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134
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135
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if( $('li').length !== 1 ){
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136
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137
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$(this).parent('li').remove();
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138
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139
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}
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140
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141
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if( $('li').length < 3 ){
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142
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143
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$('#add').css('display','block');
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144
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145
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}
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146
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147
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});
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148
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149
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/* 入力時の横幅 */
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150
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151
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$(document).on("input keyup change load",".box", function(){
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152
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153
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string = $(this).val();
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154
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155
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target = $(this).closest('li').find('.box_width');
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156
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157
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widthPixel = strWidth(target,string);
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158
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159
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// 幅変更
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160
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161
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if( widthPixel >= 60 ){
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162
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163
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$(this).css('width',widthPixel+'px');
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164
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165
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}
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166
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167
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});
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168
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169
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function strWidth(trg,str) {
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170
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171
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var width = trg.text(str).get(0).offsetWidth;
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172
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173
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trg.empty();
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174
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175
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return width;
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176
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}
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179
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```
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2
ついき
test
CHANGED
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@@ -65,3 +65,29 @@
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65
65
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});
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66
66
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67
67
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```
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68
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69
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70
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71
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* del
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72
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73
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```javascript
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74
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75
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/* 削除 */
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76
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77
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$(document).on("click",".del", function(){
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78
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79
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if( $('li').length !== 1 ){
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80
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81
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$(this).parent('li').remove();
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82
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83
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}
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84
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85
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if( $('li').length < 3 ){ //here 判定の不等号がおかしい
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86
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87
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$('#add').css('display','block'); //here #がない
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88
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89
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}
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90
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91
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});
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92
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93
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```
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1
ついき
test
CHANGED
|
@@ -25,3 +25,43 @@
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25
25
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});
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26
26
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27
27
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```
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28
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+
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29
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30
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31
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* add 3
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32
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+
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33
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3個になった時点で消すには、こういう風に追加後に、「消したい条件なら」「消す」とする
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34
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+
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35
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+
```javascript
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|
36
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+
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37
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+
/* 追加 */
|
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38
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+
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39
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+
$(document).on("click","#add", function(){
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40
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+
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41
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+
var tag_cnt = parseInt(tag_num) + 1;
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42
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+
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43
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+
var add_list = `
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44
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+
|
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45
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+
<li>
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46
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+
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47
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+
<span class="box_width"></span>
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48
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+
|
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49
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+
<input type="text" class="box">
|
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50
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+
|
|
51
|
+
<button type="button" class="del">del</button>
|
|
52
|
+
|
|
53
|
+
</li>`;
|
|
54
|
+
|
|
55
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+
$(this).before($(add_list));
|
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56
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+
|
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57
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+
var tag_num = $('li').length; //here
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58
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+
|
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59
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+
if( tag_num >= 3 ){
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60
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+
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61
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+
$('#add').css('display','none');
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62
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+
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63
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+
}
|
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64
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+
|
|
65
|
+
});
|
|
66
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+
|
|
67
|
+
```
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